Y. Ishizaki-Betchaku, N. Hara, T. Matsuda, J. Matsui, T. Seki, S. Nagano, "Formation of Conjugated Polymer Monolayer Networks on Water Surface and Nonlinear Charge Transport," Advanced Electronic Materials, 2400427 (1-11) (2024).

Y. Ishizaki-Betchaku, N. Kumakura, S. Yamamoto, S. Nagano, M. Mitsuishi, "Ultrathin Ionic Diodes with Electrostatically Heterogeneous Hybrid Interfaces of Nanoporous SiO2 Nanofilms and Polymer Layer-by-Layer Multilayers," Small, 20 (40), 2470293 (2024).

M. Kikuchi, M. Hara, S. Nagano, H. Ebe, J. Matsui, "Order-Order Transition in Statistical Copolymer Thin Film Induced by LCST-Type Behavior," The Journal of Physical Chemistry B, 128 (31), 7681-7689 (2024).

C. Kawakami, M. Hara, S. Nagano, H. Shimomoto, Y. Yorimoto, T. Yamada, S. Oda, E. Ihara, T. Seki, "Assembly Structure Formation in Bulk and Ultrathin Films of Poly (substituted methylene) Having an Azobenzene Side Chain," Langmuir, 40, 21, 11297–11306 (2024).

K. Aoki, T. Matsuzawa, K. Suetsugu, M. Hara, S. Nagano, Y. Nagao, "Influence of Humidity on Layer-by-Layer Growth and Structure in Coordination Networks," Inorganic Chemistry,  63 (15), 6674-6682 (2024).

M. Inoue, R. Sakashita, S. Kagaya, M. Gemmei-Ide, Y. Yao, A. Suwansoontorn, S. Nagano, S. Yamamoto, M. Mitsuishi, Y. Nagao, J. Matsui, "Mechanism of High Proton Mobility in the Two-Dimensional Nanospace at the Interlayer of a Multilayer Polymer Nanosheet Film," The Journal of Physical Chemistry C, 127 (50), 24046-24055 (2023).

M. S. Grewal, K. Ishibashi, M. Hara, Y. Ishizaki, S. Nagano, H. Yabu, "Effect of the Poly (ethylene glycol) Diacrylate (PEGDA) Molecular Weight on Ionic Conductivities in Solvent-Free Photo-Cross-Linked Solid Polymer Electrolytes," Langmuir, 39 (29), 10209-10215 (2023).

Y Yao, H Watanabe, M Hara, S Nagano, Y Nagao, "Lyotropic Liquid Crystalline Property and Organized Structure in High Proton-Conductive Sulfonated Semialicyclic Oligoimide Thin Films," ACS Omega, 8 (8), 7470-74781 (2023).

M Hara, A Masuda, S Nagano, T Seki, "Photoalignment and Photofixation of Chromonic Mesophase in Ionic Linear Polysiloxanes Using a Dual Irradiation System," Crystals, 13 (2), 326 (2023).

M. Ohke, R. Akaishi, K. Tachibana, M. Kohri, S. Nagano, H. Ebe, J. Matsui, "Janus metallic film with gold and silver luster by electroless deposition of silver using poly (dopamine acrylamide) thin film," RSC Advances, 13 (40), 28104-28111 (2023).

M Kikuchi, N Saito, M Ohke, S Nagano, S Nishitsuji, J Matsui, "Order–order transitions in poly (N-octadecyl acrylamide-co-hydroxyethyl acrylamide) statistical copolymer filmsm," Soft Matter, 19 (17), 3058-3068 (2023).

N Hida, T Nakajima, M Hara, T Seki, S Nagano, "Induced Smectic E Phase in a Binary Blend of Side‐Chain Liquid Crystalline Polymers," Macromol. Rapid Commun., 2200761 (1 of 5) (2023). doi.org/10.1002/marc.202200761

Y. Minowa, Y. Yabuuchi, S. Nagano, S. Nagamatsu, A. Fujii, M. Ozaki, "Fast-Coating Process Based on Elongated Rodlike Preaggregate for Highly Oriented Thin Film of Donor–Acceptor π-Conjugated Polymer," ACS Appl. Mater.Interfaces, 14, 44, 50112–50119 (2022).

M. Furuichi, M. Hara, S. Nagano, T. Seki, "The Effect of a Topcoat with Amorphous Polymer Layers on the Mesogen Orientation and Photoalignment Behavior of Side Chain Liquid Crystalline Polymer Films," Appl. Sci., 12 (19), 9410 (2022).

F. Wang, S. Nagano, M. Hara, Y. Nagao, "Hydration and OH–/Br– Conduction Properties of Fluorene–Thiophene-Based Anion Exchange Thin Films Tethered with Different Cations," ACS Appl. Polym. Mater., 4 (8), 5965-5974 (2022).

M. Hara, A. Kodama, S. Washiyama, Y. Fujii, S. Nagano, T. Seki, "Humidity-Induced Self-Assembled Nanostructures via Ion Aggregation in Ionic Linear Polysiloxanes," Macromolecules, 55, 11, 4313–4319 (2022).

M Hara, R Oguri, S Sarkar, S Nagano, T Seki, "Crystallization-Induced Uniform Nanodot Formation of Titanium Dioxide Films," Bull. Chem. Soc. Jpn., 95 (2), 216-220 (2022).

S. Okuda, N. Ousaka, T. Iwata, R. Ishida, A. Urushima, N. Suzuki, S. Nagano, T. Ikai, E. Yashima, "Supramolecular Helical Assemblies of Dirhodium(II) Paddlewheels with 1,4-Diazabicyclo[2.2.2]octane: A Remarkable Substituent Effect on the Helical Sense Preference and Amplification of the Helical Handedness Excess of Metallo-Supramolecular Helical Polymers,"J. Am. Chem. Soc., 144, 6, 2775–2792 (2022).

S. Ghosh, Y. Tsutsui, T. Kawaguchi, W. Matsuda, S. Nagano, K. Suzuki, H. Kaji, S. Seki, "Band-like Transport of Charge Carriers in Oriented Two-Dimensional Conjugated Covalent Organic Frameworks," Chem. Mater., 34, 2, 736–745 (2022).

K. Onishi, S. Ohtani, K. Kato, S. Fa, Y. Sakata, S. Akine, M. Ogasawara, H. Asakawa, S. Nagano, Y. Takashima, M. Mizuno, T. Ogoshi,"State-and water repellency-controllable molecular glass of pillar [5] arenes with fluoroalkyl groups by guest vapors,"Chem. Sci., 13, 4082-4087 (2022).

C. Hayasaka, S.Nagano, K. Nakano,"Synthesis of π-extended oxacenes and their application to organic field-effect transistors," Organic Electronics, 100, 106335 (1-8) (2022).

K. Mukai, M. Hara, H. Yabu, S. Nagano, T. Seki, "Photoswitchable Configuration of Nematic Liquid Crystal Droplets Embedded in a Honeycomb-Patterned Film," Adv. Mater. Interfaces, 2100891 (1-8) (2021).

S. Fa, M. Mizobata, S. Nagano, K. Suetsugu, T. Kakuta, T. Yamagishi, T. Ogoshi, "Reversible “On/Off” Chiral Amplification of Pillar [5] arene Assemblies by Dual External Stimuli," ACS Nano,  15, 10, 16794–16801 (2021).

M. Hara, Y. Iijima, S. Nagano, T. Seki, "Simple linear ionic polysiloxane showing unexpected nanostructure and mechanical properties," Sci. Rep. 11, 17683 (1-8) (2021).

Y. Yabuuchi, Y. Minowa, H. Kajii, S. Nagano, A. Fujii, M. Ozaki,  "Direction‐Selectable Ultra‐Highly Oriented State of Donor–Acceptor Conjugated Polymer Induced by Slow Bar Coating Process," Adv. Electronic Mater., 7, 2100313 (2021).

I. Kitamura, M. Hara, S. Nagano, T. Seki, "Photo-triggered surface relief formation of polystyrene films based on the Marangoni flow driven by a surface photoresponsive skin layer,"  Mol. Cryst. Liq. Cryst., accepted (2021).

R. Goto, Y. Ono, M. Hara, T. Seki, Y. Nagao, S. Nagano, "Preparation and structural characterization of shear-aligned films in a high proton conductive alkyl-sulfonated polyimide with lyotropic liquid crystallinity,"  Mol. Cryst. Liq. Cryst., accepted (2021).

K. Koseki, T. Arita, K. Tabata, T. Nohara, R. Sato, S. Nagano, A. Masuhara, "Effect of Surface Silanol Density on the Proton Conductivity of Polymer-Surface-Functionalized Silica Nanoparticles," ACS Sustainable Chem. & Eng., 9, 10093-10099 (2021).

A. Suwansoontorn, K. Yamamoto, S. Nagano, J. Matsui, Y. Nagao, "Interfacial and Internal Proton Conduction of Weak-acid Functionalized Styrene-based Copolymer with Various Carboxylic Acid Concentrations," Electrochemistry, 89, 401-408 (2021).

R Yamakado, I Kitamura, M Hara, S Nagano, T Seki, H Maeda, "Photoisomerization-induced patterning of ion-pairing materials based on anionic azobenzene and its complex with a fluorescent π-electronic system," Chem. Commun., 57 , 4287-4290 (2021).

G. Uzurano, Y. Yabuuchi, R. Ishiura, M. Yoneya, S. Nagano, H. Kajii, A. Fujii, M. Ozaki, "Molecular orientation and electrical properties in tert‐butylated phthalocyanine thin film fabricated by uniaxial solution coating," Electronics and Communications in Japan, 140, 11, 1182-1188 (2021).

K. Matsunaga, W. Kukai, M. Ishizaki, M. Kurihara, S. Yamamoto, M. Mitsuishi, H. Yabu, S. Nagano,  J. Matsui, "Formation of Perpendicularly Aligned Sub-10 nm Nanocylinders in Poly(N-dodecylacrylamide-b-ethylene glycol) Block Copolymer Films by Hierarchical Phase Separation," Macromolecules,  53, 21, 9601–9610 (2020).

T. Nishida, K. Satoh, S. Nagano, T. Seki, M. Tamura, Y. Li, K. Tomishige, M. Kamigaito, "Biobased Cycloolefin Polymers: Carvone-Derived Cyclic Conjugated Diene with Reactive exo-Methylene Group for Regioselective and Stereospecific Living Cationic Polymerization," ACS Macro Lett., 9, 1178-1183 (2020).

I. Kitamura, K. Kato, R.B. Berk, T. Nakai, M. Hara, S. Nagano, T. Seki, "Photo-triggered large mass transport driven only by a photoresponsive surface skin layer," Sci. Rep., 10 (1), 1-10 (2020).

M. Hara, N. Wakitani, A. Kodama, S. Nagano, T. Seki, "Hierarchical photocomposition of hetero-nanostructures in a surfactant-polysiloxane hybrid film toward next-generation nanolithography," ACS Appl. Polym. Mater.,  2, 6, 2284–2290 (2020).

R. Imanishi, Y. Nagashima, K. Takishima, M. Hara, S. Nagano, T. Seki, "Induction of Highly Ordered Smectic Phases in Side Chain Liquid Crystalline Polymers by Means of Random Copolymerization,"Macromolecules, 53 (6), 1942-1949 (2020).

U. N. Shrivastava, K. Suetsugu, S. Nagano, H. Fritzsche, Y. Nagao, K. Karan, "Cross-correlated humidity-dependent structural evolution of Nafion thin films confined on a platinum substrate," Soft Matter, 16 (5), 1190-1200 (2020).

K. Ebata, Y. Hashimoto, S. Yamamoto, M. Mitsuishi, S. Nagano, J. Matsui, "Nanophase Separation of Poly(N-alkyl acrylamides): The Dependence of the Formation of Lamellar Structures on Their Alkyl Side Chains," Macromolecules, 52 (24), 9773-9780 (2019). 

Y. Yabuuchi, G. Uzurano, R. Ishiura, M. Nakatani, S. Nagano, A. Fujii, M. Ozaki, "Coating speed dependence of main chain orientation and aggregation of PBTTT-C16 in the bar-coated thin film," J. J. Appl. Phys., 59 (SD), SDDA04 (2019).

G. Uzurano, Y. Yabuuchi, R. Ishiura, M. Yoneya, S. Nagano, A. Fujii, M. Ozaki, "Solution-processed uniaxially oriented thin film of tert-butyl-substituted phthalocyanine," J. J. Appl. Phys., 59 (SD), SDDA05 (2019).

Y. Tsujimoto, T. Sakurai, Y. Ono, S. Nagano, S. Seki, "Cold Crystallization of Ferrocene-Hinged π-Conjugated Molecule Induced by the Limited Conformational Freedom of Ferrocene," J. Phys. Chem. B, 123 (39), 8325-8332 (2019).

K Mukai, M Hara, S Nagano, T Seki, "Formation of High-Density Brush of Liquid Crystalline Polymer Block Associated with Dewetting Process on Amorphous Polymer Film,"  Langmuir, 35 (32), 10397-10404 (2019).  DOI：10.1021/acs.langmuir.9b01689

T. Kitagawa, M. Fujisaki, S. Nagano, N. Tohnai, A. Fujii, M. Ozaki, "Homo/hetero-epitaxial growth in tetrabenzotriazaporphyrin derivative thin film fabricated by contact freezing method with seed crystal," Appl. Phys. Express 12 (5), 05101 (2019).

R. Yamakado, Y.Haketa, M. Hara, S. Nagano, T. Seki, H. Maeda, "Photo-responsive dimension-controlled ion-pairing assemblies based on anion complexes of π-electronic systems," Chem. Commun. DOI: 10.1039/C9CC05632G

K. Mukai, K. Imai, M. Hara, S. Nagano, T. Seki, "A High‐Density Azobenzene Side Chain Polymer Brush for Azimuthal and Zenithal Orientational Photoswitching of a Nematic Liquid Crystal," ChemPhotoChem, 3, 495-500 (2019) DOI:10.1002/cptc.201800234

I. Kitamura, K. Oishi, M. Hara, S. Nagano, T. Seki, "Photoinitiated Marangoni flow morphing in a liquid crystalline polymer film directed by super-inkjet printing patterns," Sci. Rep., 9, 2556 (2019). DOI: 10.1038/s41598-019-38709-1

Y. Nagao, T. Tanaka, Y. Ono, K. Suetsugu, M. Hara, G. Wang, S. Nagano, T. Abe,  "Introducing planar hydrophobic groups into an alkyl-sulfonated rigid polyimide and how this affects morphology and proton conductivity," Electrochimica Acta, 300, 333-340 (2019). DOI: 10.1016/j.electacta.2019.01.118

K. Takakura, Y. Ono, K. Suetsugu, M. Hara, S. Nagano, T. Abe, Y. Nagao, "Lyotropic ordering for high proton conductivity in sulfonated semi aliphatic polyimide thin films," Polymer Journal, 51, 31–39 (2019). DOI: 10.1038/s41428-018-0111-1

K. Ebata, Y. Hashimoto, K. Ebara, M. Tsukamoto, S. Yamamoto, M. Mitsuishi, S. Nagano, J. Matsui, "Molecular-weight dependence of the formation of highly ordered lamellar structures of poly (N-dodecyl acrylamide) by humid annealing," Polymer Chemistry, 10 (7), 835-842 (2019). DOI: 10.1039/C8PY01660G

R. Imanishi, Y. Nagashima, M. Hara, S. Nagano, T. Seki, "Collective Competition between Two Mesogens showing Opposing Orientational Nature in Side-Chain Liquid Crystalline Polymers," Chemistry Letters, 48 (2), 98-101 (2018). DOI: 10.1246/cl.180879

M. Nakatani, M. Ohmori, S. Nagano, A. Fujii, M. Ozaki, "Selective crystal growth in bar-coating process of polymorphic pentyl-substituted phthalocyanine thin film," Organic Electronics, 62, 241-247 (2018). DOI: 10.1016/j.orgel.2018.08.019

K. Takagi, S. Yamamoto, K. Tsukamoto, Y. Hirano, M. Hara, S. Nagano, Y. Ie, D. Takeuchi, "Synthesis and Field‐Effect Transistor Application of π‐Extended Lactam‐Fused Conjugated Oligomers obtained by Tandem Direct Arylation," Chemistry-A European Journal, 24 (53), 14137-14145 (2018). DOI: 10.1002/chem.201801399

K. Yoshikawa, D. Motoyama, Y. Hiruma, H. Ozawa, S. Nagano, M. Haga, "Proton-Rocking-Chair-Type Redox Capacitors Based on Indium Tin Oxide Electrodes with Multilayer Films Containing Ru Complexes," ACS applied materials & interfaces, 10 (32), 26990-27000 (2018). DOI: 10.1021/acsami.8b05907

R. Imanishi, M. Hara, S. Nagano, T. Seki, "Photocontrol of mesogen alignment in a side chain LC polymer film by means of random copolymerization of two mesogens of opposing orientation nature," Molecular Crystals and Liquid Crystals, 663 (1), 99-107 (2018). DOI: 10.1080/15421406.2018.1468136

Y. Ono, R. Goto, M. Hara, S. Nagano, T. Abe, Y. Nagao, High Proton Conduction of Organized Sulfonated Polyimide Thin Films with Planar and Bent Backbones, Macromolecules,  51 (9), 3351-3359 (2018).  DOI: 10.1021/acs.macromol.8b00301

R. Yamakado, M. Hara, S. Nagano, T. Seki, H. Maeda, "Complexation of Anion-responsive π-Electronic System with Alkyl-substituted Azobenzene Carboxylate Providing Ion-pairing," Chemistry Letters, 47(4), 404-407 (2018). DOI: 10.1246/cl.171128.

H. Yabu, S. Nagano, Y. Nagao, "Core-shell cylinder (CSC) nanotemplates comprising mussel-inspired catechol-containing triblock copolymers for silver nanoparticle arrays and ion conductive chan", RSC Advances,8 (19), 10627-10632 (2018). DOI: 0.1039/C8RA00630J

T. Sakurai, N. Orito, S. Nagano, K. Kato, M. Takata, S. Seki, "Electron-transporting foldable alternating copolymers of perylenediimide and flexible macromolecular chains," Materials Chemistry Frontiers,2 (4), 718-729 (2018).DOI: 10.1039/C7QM00616K

M. Hara, T. Orito, S.Nagano, T. Seki, "Humidity-responsive phase transition and on-demand UV-curing in a hygroscopic polysiloxane–surfactant nanohybrid film," Chem. Commun., 54, 1457-1460 (2018). DOI: 10.1039/C7CC09226A

T. Sato, M. Tsukamoto, S. Yamamoto, M. Mitsuishi, T. Miyashita, S. Nagano, J. Matsui, "Acid-Group-Content-Dependent Proton Conductivity Mechanisms at the Interlayer of Poly (N-dodecylacrylamide-co-acrylic acid) Copolymer Multilayer Nanosheet Films," Langmuir, 33 (45), 12897–12902 (2017).doi.10.1021/acs.langmuir.7b03160

K. Ogawa, M. Hara, S. Nagano, T. Seki, Y. Takeoka, "Photo-tunable Christiansen Colour Filter Using Photoisomerization of Stilbene," Chem. Lett., 46(9), 1386-1389 (2017). doi.org/10.1246/cl.170603

T. Seki, K. Fukuhara, D. Tanaka, T. Nakai, M. Hara, S. Nagano, "Free surface command layers for the photoalignment," Molecular Crystals and Liquid Crystals,653 (1), 1-8 (2017).

T. Sakaguchi, S. Nagano, M. Hara, S. H. Hyon, M. Patel, K. Matsumura, "Facile preparation of transparent poly (vinyl alcohol) hydrogels with uniform microcrystalline structure by hot-pressing without using organic solvents," Polym. J., 49, 535–542 (2017).

H. Yabu, S. Nagano, "Formation of unusual microphase-separated ultrathin films of poly (vinyl catechol-block-styrene)(PVCa-b-PSt) at the air-water interface by solution casting onto the water," RSC Adv., 7, 33086-33090 (2017).

R. Yamakado, M. Hara, S. Nagano, T. Seki, H. Maeda, "Photo-Responsive Soft Ionic Crystals: Ion‐Pairing Assemblies of Azobenzene Carboxylates," Chem. Eur. J., 23, 9244–9248 (2017). 10.1002/chem.201701925

K Beppu, Y Nagashima, M Hara, S Nagano, T Seki, "Photoalignment of Vertically Oriented Microphase Separated Lamellae in LC–LC Diblock Copolymer Thin Film," Macromol. Rapid Commun., 38, 1600659 (2017).

K. Mukai, K. Imai, M. Hara, S. Nagano, T. Seki, "Liquid Crystal Phase Behavior of a Polymer Brush Film with Azobenzene Side Chains," 高分子論文集, 74 (1), 59-63 (2017).

T Seki, D Yamaoka, T Takeshima, Y Nagashima, M Hara, S Nagano, "Photo-modulations of surface wrinkles formed on elastomer sheets," Mol. Cryst. Liq. Cryst.644 (1), 52-60 (2017).

S. Mitsui, S. Nagano, M. Hara, T. Seki, “SRG Inscription in Supramolecular Liquid Crystalline Polymer Film: Replacement of Mesogens,” Crystals, 7, 52(1-10). DOI: 10.3390/cryst7020052

Y. Nagao, K. Krishnan, R. Goto, M. Hara, S. Nagano, “Effect of Casting Solvent on Interfacial Molecular Structure and Proton Transport Characteristics of Sulfonated Polyimide Thin Films,” Anal. Sci., 33, 35-39 (2017). DOI: 10.2116/analsci.33.35

Y. Hashimoto, T. Sato, R. Goto, Y. Nagao, M. Mitsuishi, S. Nagano, J. Matsui, “In-plane oriented highly ordered lamellar structure formation of poly (N-dodecylacrylamide) induced by humid annealing,” RSC Adv., 7, 6631-6635 (2017). DOI: 10.1039/C6RA27994E

T. Motokawa, M. Makino, K. Yamamoto, H. Takase, S. Nagano, Y. Enomoto-Rogers, T. Iwata, T. Kawaguchi, M. Sakaguchi, "Chemical surface modification of aluminum oxide nanoparticles witha graft copolymer of aluminum oxide and poly (isobutyl vinyl ether) mechanochemically synthesized in vacuum at low temperature," Adv. Powder Technol., 28, 266–279 (2017). DOI: 10.1016/j.apt.2016.09.031

K. Mukai, M. Hara, S. Nagano, T. Seki, "High-density liquid crystalline polymer brushes formed via surface segregation and self-assembly," Angew. Chem. Int. Ed., 128, 14234-14238 (2016). DOI: 10.1002/ange.201607786.

H. Yabu, J. Matsui, M. Hara, S. Nagano, Y. Matsuo, Y. Nagao, "Proton Conductivities of Lamellae-Forming Bioinspired Block Copolymer Thin Films Containing Silver Nanoparticles," Langmuir, 32, 9484-9491 (2016). DOI: 10.1021/acs.langmuir.6b02521

R. Kurimoto, K. Kanie, K. Uto, S. Kawai, M. Hara, S. Nagano, Y. Narita, H. Honda, M. Naito, M. Ebara, R. Kato, "Combinational Effects of Polymer Viscoelasticity and Immobilized Peptides on Cell Adhesion to Cell-selective Scaffolds," Anal. Sci., 32, 1195-1202 (2016). DOI: 10.2116/analsci.32.1195

S. Laokroekkiat, M. Hara, S. Nagano, Y. Nagao, "Metal-Organic Coordination Network Thin Film by Surface-Induced Assembly," Langmuir, 32, 6648-6655 (2016). DOI: 10.1021/acs.langmuir.6b01251

R. Kurimoto, K. Kanie, N. Idota, M. Hara, S. Nagano, T. Tsukahara, Y. Narita, H. Honda, M. Naito, M. Ebara, R. Kato"Combinational Effect of Cell Adhesion Biomolecules and Their Immobilized Polymer Property to Enhance Cell-Selective Adhesion", Int. J. Polym. Sci. 2016, 2090985(9) (2016). DOI: 10.1155/2016/2090985

M. A. Rashed, S. Laokroekkiat, M. Hara, S. Nagano, Y. Nagao"Fabrication and Characterization of Cross-linked Organic Thin Films with Nonlinear Mass Densities," Langmuir, 32, 5917-5924 (2016). DOI: 10.1021/acs.langmuir.6b00540

D. Tanaka, T. Mizuno, M. Hara, S. Nagano, I. Saito, K. Yamamoto, T. Seki, "Evaluations of Mesogen Orientation in Thin Films of Polyacrylate with Cyanobiphenyl Side Chain," Langmuir, 32, 3737-3745 (2016). DOI: 10.1021/acs.langmuir.6b00538

Y Saito, T Higuchi, H Jinnai, M Hara, S Nagano, Y Matsuo, H Yabu, “Silver Nanoparticle Arrays Prepared by In Situ Automatic Reduction of Silver Ions in Mussel‐Inspired Block Copolymer Films,” Macromol. Chem. Phys., 217, 721-721 (2016). DOI: 10.1002/macp.201670018

K. Takagi, K. Yamauchi, S. Kubota, S. Nagano, M. Hara, T. Seki, K. Murakami, Y. Ooyama, J. Ohshita, M. Kondo, H. Masu, “Fused π-conjugated imidazolium liquid crystals: synthesis, self-organization, and fluorescence properties,” RSC Advances, 6, 9152-9159 (2016). DOI: 10.1039/C5RA25496E

T. Nakai, D. Tanaka, M. Hara, S. Nagano, T. Seki, "Free Surface Command Layer for Photoswitchable Out-of-Plane Alignment Control in Liquid Crystalline Polymer Films," Langmuir, 32, 909–914 (2016). DOI: 10.1021/acs.langmuir.5b04325

M. Akai-Kasaya, Y. Okuaki, S. Nagano, T. Mitani, and Y. Kuwahara, "Coulomb Blockade in a Two-Dimensional Conductive Polymer Monolayer," Phys. Rev. Lett., 115, 196801 (2015).

Daisuke Tanaka, Yuki Nagashima, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "Alternation of Side-Chain Mesogen Orientation Caused by the Backbone Structure in Liquid-Crystalline Polymer Thin Films," Langmuir, 31(42), 11379-11383 (2015).

Karthik Krishnan, Hiroko Iwatsuki, Mitsuo Hara, Shusaku Nagano, Yuki Nagao, "Influence of Molecular Weight on Molecular Ordering and Proton Transport in Organized Sulfonated Polyimide Thin Films," The Journal of Physical Chemistry C,119(38), 21767-21774 (2015).

Takahiro Takeshima, Wan Liao, Yuki Nagashima, Koichiro Beppu, Mitauo Hara, Shusaku Nagano, Takahiro Seki, "Photoresponsive Surface Wrinkle Morphologies in Liquid Crystalline Polymer Films," Macromolecules,48(18), 6378-6384 (2015).

Masami Sano, Tomoya Murase, Mitsuo Hara, Shusaku Nagano, Yuya Shinohara, Yoshiyuki Amemiya, Takahiro Seki, "Photo-switching Behavior of Microphase Separated Structure in Liquid Crystalline Azobenzene Block Copolymers Possessing Different Poly (alkyl methacrylate) Blocks," Molecular Crystals and Liquid Crystals,617(1), 5-13 (2015).

Masami Sano, Feng Shan, Mitsuo Hara, Shusaku Nagano, Yuya Shinohara, Yoshiyuki Amemiya, Takahiro Seki, "Dynamic photoinduced realignment processes in photoresponsive block copolymer films: effects of the chain length and block copolymer architecture," Soft Matter, 11(29), 5918-5925 (2015).

Takahiro Seki, Kei Fukuhara, Masami Sano, Mitsuo Hara, Shusaku Nagano, "Photoalignment of liquid crystal polymer films containing mesostructures and a free surface command layer," Molecular Crystals and Liquid Crystals, 614, 1-6 (2015).

Masami Sano, Mitsuo Hara, Shusaku Nagano, Yuya Shinohara, Yoshiyuki Amemiya, Takahiro Seki, "New Aspects for the Hierarchical Cooperative Motions in Photoalignment Process of Liquid Crystalline Block Copolymer Films," Macromolecules, 48(7), 2217-2223 (2015).

Daichi Yamaoka, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "Photoalignable Radical Initiator for Anisotropic Polymerization in Liquid Crystalline Media," Macromolecules, 48(4), 908-914 (2015).

Guanghui Cui, Masamichi Fujikawa, Shusaku Nagano, Keisuke Shimokita, Tsukasa Miyazaki, Shinichi Sakurai, Katsuhiro Yamamoto, "Macroscopic Alignment of Cylinders via Directional Coalescence of Spheres along Annealing Solvent Permeation Directions in Block Copolymer Thick Films," Macromolecules, 47(17), 5989-5999 (2014).

Karthik Krishnan, Tomoaki Yamada, Hiroko Iwatsuki, Mitsuo Hara, Shusaku Nagano, Kazuya Otsubo, Osami Sakata, Akihiko Fujiwara, Hiroshi Kitagawa, Yuki Nagano, "Influence of Confined Polymer Structure on Proton Transport Property in Sulfonated Polyimide Thin Films," Electrochemistry, 82(10), 865-869 (2014).

Kei Fukuhara, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "Free Surface-Induced Planar Orientation in Liquid Crystalline Block Copolymer Films: On the Design of Additive Surface Active Polymer Layer," Molecular Crystals and Liquid Crystals, 601(1), 11-19 (2014)

Masami Sano, Shiyuko Nakamura, Mitsuo Hara, Shusaku Nagano, Yuya Shinohara, Yoshiyuki Amemiya, Takahiro Seki, "Pathways toward Photoinduced Alignment Switching in Liquid Crystalline Block Copolymer Films," Macromolecules, 47(20), 7178-7186 (2014).

Guanghui Cui, Masamichi Fujikawa, Shusaku Nagano, Masami Sano, Hiroshi Takase, Tsukasa Miyazaki, Shinichi Sakurai, Katsuhiro Yamamoto, "Perpendicular oriented cylinders via directional coalescence of spheres embedded in block copolymer films induced by solvent annealing," Polymer, 55(6), 1601-1608 (2014).

Karthik Krishnan, Hiroko Iwatsuki, Mitsuo Hara, Shusaku Nagano, Yuki Nagao, "Proton conductivity enhancement in oriented, sulfonated polyimide thin films," Journal of Materials Chemistry A, 2(19), 6895-6903 (2014).

Kei Fukuhara, Shusaku Nagano, Mitsuo Hara, Takahiro Seki, "Free-surface molecular command systems for photoalignment of liquid crystalline materials," Nature Communications, 5, 3320(1-8) (2014).

Jin Wook Park, Shusaku Nagano, Seong-Jun Yoon, Tomoki Dohi, Jangwon Seo, Takahiro Seki, Soo Young Park, "High Contrast Fluorescence Patterning in Cyanostilbene-Based Crystalline Thin Films: Crystallization-Induced Mass Flow Via a Photo-Triggered Phase Transition," Advanced Materials, 26(9), 1354-1359 (2014).

Hafiz Ashraful Haque, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "Photoinduced In-plane Motions of Azobenzene Mesogens Affected by the Flexibility of Underlying Amorphous Chains," Macromolecules, 46(20), 8275-8283 (2013).

Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "Spontaneous Formation of Vertically Aligned Lamellae in Thin Films of Block Copolymer-Silica Hybrid Material," Bulletin of the Chemical Society of Japan, 86(10), 1151-1157 (2013). (Selected Paper)

Guanghui Cui, Satoshi Ohya, Taito Matsutani, Shusaku Nagano, Tomoki Dohi, Shiyuko Nakamura, Shinichi Sakurai, Tsukasa Miyazaki, Katsuhiro Yamamoto, "Perpendicular orientation of sub-10 nm channels in polystyrene-b-poly(4-hydroxyl styrene)/PEG oligomer blend thin films," Nanoscale, 5, 6713-6719 (2013).

M. Akai-Kasaya, Y. Okuaki, S. Nagano, A. Saito, M. Aono, Y. Kuwahara, "Isotropic charge transport in highly ordered regioregular poly(3-hexylthiophene) monolayer," Journal of Physics D: Applied Physics, 46(42), 425303(1-7) (2013).

Hafiz Ashraful Haque, Soutarou Kakehi, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "High-Density Liquid Crystalline Azobenzene Polymer Brush Attained by Surface-Initiated Ring Opening Metathesis Polymerization," Langmuir, 29(25), 7571-7575 (2013).

Kei Fukuhara, Yasuyoshi Fujii, Yuki Nagashima, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, "Liquid-Crystalline Polymer and Block Copolymer Domain Alignment Controlled by Free-Surface Segregation," Angewandte Chemie International Edition, 52(23), 5988-5991 (2013).

Hafiz Ashraful Haque, Shusaku Nagano, Takahiro Seki, "Effect of Flexible Chain Length on the Photoorientation Behavior of Surface-grafted Liquid Crystalline Azobenzene Block Copolymer Brush," Molecular Crystals and Liquid Crystals, in press.

Wenhan Li, Shusaku Nagano, Koichiro Yonetake, Takahiro Seki, "Photoinduced Dewetting in Thin Films of Liquid Crystalline Dendritic Azobenzene Derivatives," Molecular Crystals and Liquid Crystals, 563(1), 112-120 (2012).

Yuki Hayata, Shusaku Nagano, Yukikazu, Takeoka, Takahiro Seki, "Photoinduced Volume Transition in Liquid Crystalline Polymer Gels Swollen by a Nematic Solvent," ACS Macro Letters, 1(11), 1357-1361 (2012).

Hafiz Ashraful Haque, Shusaku Nagano, Takahiro Seki, "Lubricant Effect of Flexible Chain in the Photoinduced Motions of Surface-Grafted Liquid Crystalline Azobenzene Polymer Brush," Macromolecules, 45(16), 6095–6103 (2012).

Wenhan Li, Tomoki Dohi, Mitsuo Hara, Shusaku Nagano, Osamu Haba, Koichiro Yonetake, Takahiro Seki, "Phototriggered Mass Migration Consorted with Surface Dewetting in Thin Films of a Liquid Crystalline Azobenzene-containing Dendrimer," Macromolecules, 45(16), 6618–6627 (2012).

Shusaku Nagano, Yusuke Koizuka, Tomoya Murase, Masami Sano, Yuya Shinohara, Yoshiyuki Amemiya, Takahiro Seki, "Synergy Effect on Morphology Switching: Real-Time Observation of Photo-Orientation of Microphase Separation in a Block Copolymer," Angewandte Chemie International Edition, 51(24), 5884-5888 (2012).

Shun-ichiro Watanabe, Hisaaki Tanaka, Shin-ichi Kuroda, Akio Toda, Haruki Tomikawa, Shusaku Nagano, Takahiro Seki, "Charge Transport Anisotropy due to Interfacial Molecular Orientation in Polymeric Transistors with Controlled In-Plane Chain Orientation," Applied Physics Express, 5, 021602-021604 (2012).

Shusaku Nagano, "Opto-orientation control of microphase separation structure," Molecular Electronics and Bioelectronics, 22(2), 93-96 (2011).

Koji Takagi, Takato Isomura, Yohei Ito, Masanori Sakaida, Shusaku Nagano, Takahiro Seki, "Synthesis and isomerization of conjugated oligomers containing azoimidazole unit," Journal of Polymer Science, Part A: Polymer Chemistry, 49(23), 4993-5000 (2011).

Shusaku Nagano, Tetsuya Kinumatsu, Yuki Ohnuma, Takahiro Seki, "'Inversed' surface micelle array fabrication of an amphiphilic block copolymer on water surface," Journal of Nanoscience and Nanotechnology, 11(4), 2973-2978 (2011).

M. Hara, S. Nagano, T. Seki, "π-π Interaction-induced Vertical Alignment of Silica Mhannels Templated by a Discotic Lyotropic Liquid Crystal," J. Am. Chem. Soc., 132, 13654-13656 (2010).

Kenji Aoki, Takafumi Iwata, Shusaku Nagano, Takahiro Seki Light-directed Anisotropic Reorientation of Mesopatterns in Block Copolymer Monolayer, Macromolecular Chemistry and Physics, 211(23), 2484-2489 (2010). (Top cover page featured)

S. Watanabe, H. Tanaka, S. Kuroda, A. Toda, S. Nagano, T. Seki, A. Kimoto, J. Abe, ”Electron spin resonance observation of field-induced charge carriers in ultrathin-film transistors of regioregular poly(3-hexylthiophene) with controlled in-plane chain orientation,” Appl. Phys. Lett., 96, 173302-173302 (2010).

K. Ichimura, K. Aoki, H. Akiyama, S. Horiuchi, S. Nagano, S. Horie, “Properties of core-shell structured nanopowders of molecular crystals fabricated by dry grinding,” J. Mater. Chem., 20, 4312-4320 (2010).

J. Isayama, S. Nagano, T. Seki, “Phototriggered Mass Migrating Motions in Liquid Crystalline Azobenzene Polymer Films with Systematically Varied Thermal Properties,” Macromolecules, 43, 4105-4112 (2010).

S. Nagano, Y. Matsushita, S. Shinma, T. Ishizone, T. Seki, “Two-dimensional nano-dot array engineering of block copolymer surface micelles on water surface,” Thin Solid Films, 518, 724-728 (2009).

K. Nishizawa, S. Nagano, T. Seki, “Micropatterning of titanium oxide film via phototactic mass transport,” J. Mater. Chem., 19, 7191-7194 (2009).

T. Seki, Y. Morikawa, T. Uekusa, S. Nagano, “Photoresponsive Liquid Crystals for Tuning and Aligning Nanostructures,” Molecular Cryst. Liquid Cryst., 510, 21-33 (2009).

A. Toda, S. Nagano, T. Seki, “Ideal Spread Monolayer Formation and Surface Pressure Induced Orientation in Poly(9,9’-di-n-octylfluorene-alt-benzothiadiazole) via Hybridization with Liquid Crystal Molecule on Water,” Syn. Met., 159 (9-10), 835-838 (2009).

M. Sato, S. Nagano, T. Seki, “Photoresponsive Liquid Crystal Based on {(1-Cyclohexenyl) phenyldiazene} as a Close Analogue of Azobenzene,” Chem. Commun., 3792-3794 (2009).

K. Nishizawa, S. Nagano, T. Seki, “Novel Liquid Crystalline Organic-Inorganic Hybrid for Highly Sensitive Photoinscriptions,” Chem. Mater., 21 (13), 2624-2631 (2009).

W. Li, S. Nagano, T. Seki, “Photo-crosslinkable liquid-crystalline azo-polymer for surface relief gratings and persistent fixation,” New Journal of Chemistry, 33 (6), 1343-1348 (2009) (Top page cover featured).

T. Uekusa, S. Nagano, T. Seki, “Highly Ordered In-Plane Photoalignment Attained by the Brush Architecture of Liquid Crystalline Azobenzene Polymer,” Macromolecules, 42(1), 312-318 (2009).

S. Nagano, S. Kodama, T. Seki, "Ideal Spread Monolayers and Multilayers Formation of Fully Hydrophobic Polythiophenes via Liquid Crystal Hybridization on Water," Langmuir, 24(18), 10498-10504 (2008).

N. Zettsu, T. Ogasawara, N. Mizoshita, S. Nagano, T. Ubukata, T. Seki, “Photo-triggered Surface Relief Gratings in Supramolecular Liquid Crystalline Polymer System with Detachable Azobenzene unit,”
Adv. Mater., 20, 516 (2008).

H. Murayama, A. B. Imran, S. Nagano, T. Seki, M. Kidowaki, K. Ito, Y. Takeoka, "Chromonic Slide-Ring Gel Based on Reflection from Photonic Bandgap," Macromolecules, 41(5), 1808-1814 (2008).

Y. Morikawa, T. Kondo, S. Nagano, T. Seki, “3D Photoalignment and Patterning of Microphase Separated Nanostructure in Polystyrene-Based Block Copolymer,” Chem. Mater., 19, 1540 (2007).

T. Uekusa, S. Nagano, T. Seki, “Unique Molecular Orientation in a Smectic Liquid Crystalline Film Attained by Surface-Initiated Graft Polymerization,” Langmuir, 23, 4642 (2007).

T. Sakai, H. Murayama, S. Nagano, Y. Takeoka, M. Kidowaki, K. Ito, T. Seki, “Photoresponsive Ring-Slide Gel,” Adv. Mater., 19, 2023 (2007).

N. Zettsu, T. Ogasawara, R. Arakawa, S. Nagano, T. Ubukata, T. Seki, “Highly Photosensitive Surface Relief Gratings Formation in a Liquid Crystalline Azobenzene Polymer: New Implications for the Migration Process,” Macromolecules, 40(13), 4607-4613 (2007).

M. Hara, S. Nagano, N. Mizoshita, T. Seki, “Chromonic/Silica Nanohybrids. Synthesis and Macroscopic Alignment,” Langmuir, 23, 12350 (2007).

Y. Morikawa, T. Kondo, S. Nagano, T. Seki, “Optical Control of Microphase Separated Nanostructures in Polystyrene-Based Liquid Crystalline Diblock Copolymer Thin Films,” Transactions of the Materials Research Society Japan, 32, 363 (2007).

A. Hozumi, S. Kojima, S. Nagano, T. Seki, N. Shirahata, T. Kameyama, “Surface Design for Precise Control of Spatial Growth of a Mesostructured Inorganic/Organic Film on a Large-Scale Area,” Langmuir, 23, 3265 (2007).

S. Nagano, Y. Matsushita, Y. Ohnuma, S. Shinma, T. Seki, “Formation of highly ordered dot array of surface micelles of block copolymer via liquid crystal-hybridized self-assembly,” Langmuir, 22, 5233 (2006).

Y. Morikawa, S. Nagano, K. Watanabe, K. Kamata, T. Iyoda, T. Seki, “Optical alignment and patterning of nanoscale microdomains in a block copolymer thin film,” Adv. Mater., 18, 883 (2006).

H. Fukumoto, S. Nagano, N. Kawatsuki, T. Seki, “Photoalignment behavior of mesoporous silica thin films synthesized on a photo-cross-linkable polymer Film,” Chem. Mater., 18, 1226 (2006).

H. Fukumoto, S. Nagano, T. Seki, “In situ polymerization of liquid crystalline monomers within photoaligned mesoporous silica thin film,” Chem. Lett., 35, 180-181 (2006).

T. Uekusa, S. Nagano, T. Seki, “Sharp temperature dependency of 2D spreading behavior in amphiphilic block copolymer at the air-water interface,” Colloids and Surfaces A: Physicochem. Eng. Aspects, 284-285, 207-211 (2006).

H. Fukumoto, S. Nagano, N. Kawatsuki, T. Seki, “Role of liquid crystallinity of the photo-cross-linkable polymer film in the photo-alignment of mesoporous silica,” Colloids and Surfaces A: Physicochem. Eng Aspects, 284-285, 309-314 (2006).

S. Kadota, K. Aoki, S. Nagano, T. Seki, “Morphological conversions of nanostructures in monolayers of an ABA triblock copolymer having azobenzene moiety,” Colloids and Surfaces A: Physicochem. Eng. Aspects, 284-285, 535-541 (2006).

T. Uekusa, S. Shinma, S. Nagano, T. Seki, “Temperature Dependenct Aggregation Behavior of Polystyrene-based Amphiphilic Block Copolymers at the Air-water Interface,” Transactions of the Materials Research Society Japan, 31(2), 265 (2006).

Y. Morikawa, S. Nagano, K. Watanabe, K. Kamata, T. Iyoda, T. Seki, “Liquid Crystal-Assisted Photo-triggered Mass Migration in Liquid Crystalline Diblock Copolymer,” Transactions of the Materials Research Society Japan, 31(2), 269 (2006).

S. Kadota, K. Aoki, S. Nagano, T. Seki, “Photocontrolled microphase separation of a block copolymer in two dimensions,” J. Am. Chem. Soc., 127, 8266 (2005).

H. Fukumoto, S. Nagano, N. Kawatsuki, T. Seki, “Photo-orientation of mesoporous silica thin films on photocrosslinkable polymer films,” Adv. Mater., 17, 1035-1039 (2005).

T. Seki, S. Nagano, Y. Kawashima, N. Zettsu, T. Ubukata, “Light-driven organized layer materials,” Mol. Cryst. Liq. Cryst, 430, 107-114 (2005).

S. Nagano, T. Seki, “Ideal spread monolayer of fully hydrophobic polysilane, poly131(methyloctylsilane), with the assist of liquid crystal monolayer,” Trans. Mater. Res. Soc. Jpn., 30, 663 (2005).

H. Fukumoto, S. Nagano, N. Kawatsuki, T. Seki, “Synthesis of photo-aligned mesoporous silica thin films on photo-cross-linkable polymer film,” Trans. Mater. Res. Soc. Jpn., 30, 361-364 (2005).

S. Kadota, S. Nagano, T. Seki, “2D nanophase separation in monolayers of triblock copolymer having azobenzene moiety,” Trans. Mater. Res. Soc. Jpn., 30, 659-662 (2005).

S. Nagano, T. Seki, “Abrupt interfacial transitions of hydrophobic polysilanes as probed via liquid crystal-assisted stepwise deposition,” J. Am. Chem. Soc., 124, 2074-2075 (2002).

S. Nagano, T. Seki, K. Ichimura, “Conformational and alignment behavior of polysilane film mixed with liquid crystal molecule,” Mol. Cryst. Liq. Cryst., 367, 353-360 (2001).

S. Nagano, T. Seki, K. Ichimura, “Monolayer formation of hydrophobic polysilane on water through hybridization with liquid crystal molecules,” Langmuir, 17, 2199-2205 (2001).

S. Nagano, T. Seki, K. Ichimura, “Monolayer formation of hydrophobic polysilane on water surface assisted by liquid crystal molecule,” Chem. Lett., 612-613 (2000).

永野修作, 関　隆広, 市村國宏, “ポリジヘキシルシランのコンフォメーションに及ぼす棒状液晶分子の添加効果,” 高分子論文集, 56, 406-409 (2000).

K. Mochida, S. Nagano, “Electronic transport in phenyl-substituted polygermane homopolymers and copolymers with polygermanes and polysilanes,” Inorg. Chem. Commun., 1, 289-291 (1998).

K. Mochida, S. Nagano, H. Kawata, M. Wakasa, H. Hayashi, “Micropattern of GeO2/GeC lines prepared by UV-irradiation and heat treatment of polygermane copolymers of methylphenylgermylene / phenylgermyne unit,” J. Applied Organomet. Chem., 11, 949-955 (1997).

K. Mochida, S. Nagano, H. Kawata, M. Wakasa, H. Hayashi, “Photodegradation of thin films of polygermanes,” J. Organomet. Chem., 542, 75-79 (1997).

K. Mochida, S. Nagano, S. Maeyama, T. Kodaira, A. Watanabe, O. Ito, M. Matsuda, “Nonlinear optical susceptibilities of oligo- and polygermanes,” Bull. Chem. Soc. Jpn., 70, 713-716 (1997).

T. Kodaira, A. Watanabe, O. Ito, M. Matsuda, S. Tokura, M. Kira, S. Nagano, K. Mochida, “Third-order nonlinear optical properties of a thin film of organogermane homopolymers and copolymer with organosilane,”
Adv. Mater., 7, 917-918 (1995).