Synthesis and Optical Properties of Anion-Responsive X-shaped π-Electronic System, CHEMISTRYSELECT, 9(1) , 2024.01

Morii, K; Nabeta, H; Yanbe, T; Watanabe, K; Sumikoshi, S; Chiba, T; Yamakado, R; Okada, S

Single Author

Formation of charge-transfer complexes in ionic crystals composed of 1,3-bis(dicyanomethylidene)indan anion and viologens bearing alkyl chains, RSC ADVANCES, 13(45) 32039-32044, 2023.10

Saito, E; Yamakado, R; Yasuhara, T; Yamaguchi, H; Okada, S; Yoshida, T

Single Author

Plasmon Enhancement of the Hot-Band Absorption-Assisted Anti-Stokes Photoluminescence of Near-Infrared Dyes, JOURNAL OF PHYSICAL CHEMISTRY C, 127(42) 20620-20631, 2023.10

Dimitriev, O; Yamakado, R; Nagaoka, A; Giancaspro, M; Rizzi, F; Depalo, N; Fanizza, E; Yoshida, L; Kosar, A; Yoshida, T

Single Author

Thickness control of perovskite nanocrystals based on the molecular structure of surface ligands, Applied Physics Express, 15(10) 105502, 2022.10

Taisei Kimura, Ryohei Yamakado, Naoaki Oshita, Satoshi Asakura, Akito Masuhara

Single Author

Synthesis of 3-(Phenylcarbonyl)-1H-indazole Derivatives through Intramolecular Cyclization under Mild Conditions, ASIAN JOURNAL OF ORGANIC CHEMISTRY, 11(11) , 2022.09

Sota Kuroyanagi, Shumpei Kikuchi, Shunsuke Sumikoshi, Mizuho Uwano, Takayuki Chiba, Ryohei Yamakado, Shuji Okada

Single Author

Proton conductive polymeric ionic liquids block copolymer of poly(vinylphosphonic acid)/1-propylimidazole-b-polystyrene for polymer electrolyte membrane fuel cell, Japanese Journal of Applied Physics, 61(SD) , 2022.06

Yukina Suzuki, Tomohiro Nohara, Keisuke Tabata, Ryohei Yamakado, Ryuichiro Shimada, Haruki Nakazaki, Takaaki Saito, Tsutomu Makino, Toshihiko Arita, Akito MASUHARA

Single Author

Gel Permeation Chromatography Process For Highly Oriented Cs3Cu2I5 Nanocrystal Film, SCIENTIFIC REPORTS, 12(1) , 2021.08

Yu-Hong Cheng, Rikuo Suzuki, Narumi Shinotsuka, Hinako Ebe, Naoaki Oshita, Ryohei Yamakado, Takayuki Chiba, Akito Masuhara, Junji Kido

Single Author

Electrochromism of Mesoporous Zinc Oxide/Carboxylated Viologen Electrodes, ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, 10(6) , 2021.06

Yamaguchi H., Saito E., Uno K., Yamakado R., Okada S., Yoshida T.

Single Author

Photoisomerization-induced patterning of ion-pairing materials based on anionic azobenzene and its complex with a fluorescent pi-electronic system dagger, CHEMICAL COMMUNICATIONS, 57(35) 4287-4290, 2021.03

Ryohei Yamakado, Issei Kitamura, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, Hiromitsu Maeda

Single Author

Synthesis and Solid-State Polymerization of 5-(Pyren-1-yl)penta-2,4-diyn-1-ol Derivatives with an N-Phenylurethane or N-Benzylurethane Group, CRYSTAL GROWTH & DESIGN, 20(10) 6356-6365, 2020.10

Shuhei Oshimizu, Shoko Takeshi, Tsubasa Sato, Ryohei Yamakado, Yoko Tatewaki, Shuji Okada

Single Author

Electrochemical Self-Assembly of CuSCN/4-Cyano-4’-(N’-methyl)Stilbazolium Hybrid Thin Films, ECS Transactions, 97(7) 457-469, 2020.07

Yuki Tsuda, Toru Suzuki, Tensho Nakamura, Kyota Uda, Shuji Okada, Ryohei Yamakado, Philipp Stadler, Tsukasa Yoshida

Single Author

Crystal structure characterization of some pi-conjugated ionic crystals toward electronic applications, MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 704(1) 1-9, 2020.06

Sota Kodama, Shun Aoyama, Yuka Tanaka, Keisuke Ichijo, Tsukasa Yoshida, Ryohei Yamakado, Shuji Okada

Single Author

Well-defined arrangement of pi-electronic systems based on precise molecular design, POLYMER JOURNAL, 2020.04

Yamakado Ryohei

Single Author

Switching of Two-Photon Optical Properties by Anion Binding of Pyrrole-Based Boron Diketonates through Conformation Change., Chemistry (Weinheim an der Bergstrasse, Germany), 2019.12

Kita H, Yamakado R, Fukuuchi R, Konishi T, Kamada K, Haketa Y, Maeda H

Multiple Authorship (Only Japanese)

Novel Organic CT Salts of 1,3-Bis(dicyanomethylidene)indan Anion and Viologen Cations with Different Linear Alkyl Chain Lengths, ECS Transactions, 88(1) 301-311, 2019.01

Erika Saito, Taichi Yasuhara, Yuka Tanaka, Ryohei Yamakado, Shuji Okada, Tomohiro Nohara, Akito Masuhara, Tsukasa Yoshida

Single Author

Ion-pairing assemblies based on π-extended dipyrrolylquinoxalines, Chemical Communications, 55 326-329, 2019

Yamakado, R., Ishibashi, H., Motoyoshi, Y., Yasuda, N., Maeda, H.

Multiple Authorship (Including Foreigners)

Photoluminescent Property of Electrochemically Self-Assembled CuSCN/Dye Hybrid Thin Films, ECS Trans., 88(1) 301-311, 2019

K. Uda, Y. Tsuda, S. Okada, R. Yamakado, L. Sun, Y. Suzuri, M. S. White, M. Furis, P. Stadler, O. Dimitriev, T. Yoshida

Single Author

Synthesis and Structure of Optically-Active Oligo(N-substituted-m-benzamide)s bearing Bithiophene Chromophore on the Benzene Ring, Macromolecular Chemistry and Physics, 219(23) 1800298, 2018.12

Takagi, K., Nishikawa, Y., Shimizu, K., Nobuke, K., Yamakado, R., Sugimoto, S., Inai, Y.

Multiple Authorship (Including Foreigners)

Complexation of Anion-Responsive π-Electronic System with Alkyl-Substituted Azobenzene Carboxylate Providing Ion-Pairing Assemblies, Chemistry Letter, 47 404-407, 2018

Ryohei Yamakado, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, Hiromitsu Maeda

Multiple Authorship (Including Foreigners)

Synthesis of dyes with a sulfur-containing heterocyclic donor and a pyrroline-type acceptor, Dyes and Pigments, 159 345-351, 2018

Ryohei Yamakado, Yukina Rachi, Shuji Okada

Multiple Authorship (Including Foreigners)

Photo-Responsive Soft Ionic Crystals: Ion-Pairing Assemblies of Azobenzene Carboxylates, Chemistry A European Journal, 23 9244-9248, 2017

Yamakado Ryohei, Hara Mitsuo, Nagano Shusaku, Seki Takahiro, Maeda Hiromitsu

Multiple Authorship (Including Foreigners)

Dimension-controlled assemblies of anion-responsive π-electronic systems bearing aryl substituents with fan-shaped geometries, Chemical Communications, 53 3834-3837, 2017

Lakshmi Vellanki, Haketa Yohei, Yamakado Ryohei, Yasuda Nobuhiro, Maeda Hiromitsu

Multiple Authorship (Including Foreigners)

Cooperatively Interlocked [2+1]-Type π-System-Anion Complexes, Chemistry A European Journal, 23 4160-4168, 2017

Yamakado Ryohei, Ashida Yukina, Sato Ryuma, Shigeta, Yasuteru, Yasuda Nobuhiro, Maeda Hiromitsu

Multiple Authorship (Including Foreigners)

Ion-pairing assemblies of photoresponsive cations and an interlocked [2+1]-type π-system-anion complex, Journal of Photochemistry and Photobiology A: Chemistry , 331 215-223, 2016

Yamakado Ryohei, Maeda Hiromitsu

Multiple Authorship (Including Foreigners)

Synthesis and Optical Properties of Poly(N-octyl-m-benzamide)s bearing an Oligothiophene Chromophore on the Benzene Ring, Polymer Journal, 48 605-610, 2016

Takagi Koji, Nishikawa Yuma, Shimizu Kana, Yamakado Ryohei, Sugimoto Shinri, Kondo Masaharu

Multiple Authorship (Including Foreigners)

π-Electronic Systems That Form Planar and Interlocked Anion Complexes and Their Ion-Pairing Assemblies, Chemistry A European Journal, 2016

Yamakado Ryohei Sakurai Tsuneaki, Matsuda Wakana, Seki Shu, Yasuda Nobuhiro, Akine Shigehusa, Maeda Hiromitsu

Multiple Authorship (Including Foreigners)

Ion-Pairing Crystal Polymorphs of Interlocked [2+1]-type Receptor-Anion Complexes, The Journal of Organic Chemistry, 81 8530-8536, 2016

Yamakado Ryohei, Sato Ryuma, Shigeta Yasuteru, Maeda Hiromitsu

Multiple Authorship (Including Foreigners)

Dipyrrolyphenol as a precursor of π-electronic anion that forms ion pairs with cations, Chemical Communications, 51 17572-17575, 2015

Hiromitsu Maeda, Ayaka Fukui, Ryohei Yamakado, Nobuhiro Yasuda

Multiple Authorship (Including Foreigners)

Carboxylate-Driven Supramolecular Assemblies of Protonated meso-Aryl-Substituted Dipyrrolylpyrazoles, Chemistry A European Journal, 21 9520-9527, 2015

Hiromitsu Maeda, Kengo Chigusa, Ryohei Yamakado, Tsuneaki Sakurai, Shu Seki

Multiple Authorship (Including Foreigners)

Diastereoselective cyclization of aminobenzoic acid derivative and chiroptical properties of triple-stranded helical bis(phenylethynyl)benzene, Chemical Communications, 51 5710-5713, 2015

Ryohei Yamakado, Shin-ichi Matsuoka, Masato Suzuki, Daisuke Takeuchi, Hyuma Masu, Isao Azumaya, Koji Takagi

Multiple Authorship (Including Foreigners)

Extending the Methylene Spacer Length of ADMET Hydroxy-Functionalized Polymers, Macromolecular Chemistry Physics, 215 1212-1217, 2014

Donovan Thompson, Ryohei Yamakado, Kenneth B. Wagener

Multiple Authorship (Including Foreigners)

Synthesis, reaction, and optical properties of cyclic oligomers bearing 9,10-diphenylanthracene based on an aromatic tertiary amide unit, RSC Advance, 2014

Ryohei Yamakado, Shin-ichi Matsuoka, Masato Suzuki, Daisuke Takeuchi, Hyuma Masu, Isao Azumaya, Koji Takagi

Multiple Authorship (Including Foreigners)

Helicity Induction in Three π-Conjugated Chromophores by Planar Chirality of Calixamide, Chemistry A European Journal, 19 11853-11857, 2013

Ryohei Yamakado, Koichiro Mikami, Koji Takagi, Isao Azumaya, Shinri Sugimoto, Shin-ichi Matsuoka, Masato Suzuki, Kosuke Katagiri, Masanobu Uchiyama, Atsuya Muranaka

Multiple Authorship (Including Foreigners)

Synthesis and optical properties of poly(p-benzamide)s bearing oligothiophene on the amide nitrogen atom through an alkylene spacer, Polymer Journal, 45 1171-1176, 2013

Koji Takagi, Katsuya Nobuke, Yuma Nishikawa, Ryohei Yamakado

Multiple Authorship (Including Foreigners)

A screw-shaped alignment of pyrene using m-calix[3]amide, Tetrahedron, 2012

Ryohei Yamakado, Shin-ichi Matsuoka, Masato Suzuki, Koji Takagi, Kosuke Katagiri, Isao Azumaya

Multiple Authorship (Including Foreigners)

Preparation of Molecular Cage by Coordination of m-Calix[3]amide Bearing Pyridine with Palladium Complex, Chemistry Letter, 41 249-251, 2012

Ryohei Yamakado, Shinri Sugimoto, Shin-ichi Matsuoka, Masato Suzuki, Yasuhiro Funahashi, Koji Takagi

Multiple Authorship (Including Foreigners)

Self-Assembly of Oligothiophene Chromophores by m-Calix[3]amide Scaffold, The Journal of Organic Chemistry, 76 2471-2478, 2011

Koji Takagi, Shinri Sugimoto, Ryohei Yamakado, Katsuya Nobuke

Multiple Authorship (Including Foreigners)

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.12, Electrochemical Self-Assembly of CuSCN/4-Cyano-4'-(N'-methyl)stilbazolium Hybrid Thin Films, Poster presentation

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.12, Mechanistic Studies for Electrochemical Self-assembly of CuSCN/Stilbazolium Dye Hybrid Thin Films, Poster presentation

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.12, Synthesis and Properties of Indoline-Based Tricarbocyanine with Sulfopropyl Substituents, Poster presentation

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.12, Thermal Polymerization of a Divalent Metal Salt of an Unsaturated Carboxylic Acid Mixed with Fatty Acids, Other

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.12, Concerted Photoluminescence of Electrochemically Self-Assembled CuSCN/Stylbazolium Dye Hybrid Thin Films, Other

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.12, Thermal Polymerization of a Divalent Metal Salt of an Unsaturated Carboxylic Acid Mixed with Fatty Acids, Other

The Second International Conference of Polymeric and Organic Materials, International presentation, 2019.12, Thermal Behaviors of an Electro-Optic Dye with Epoxy Groups, Other

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.12, Synthesis of π-Electron Systems bearing Lewis Acid and Base Moieties and Their Ion-Addition Effect, Other

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.12, Synthesis and Properties of Indoline-Based Tricarbocyanine with Sulfopropyl Substituents, Other

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.12, Mechanistic Studies for Electrochemical Self-assembly of CuSCN/Stilbazolium Dye Hybrid Thin Films, Other

The Second International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.12, Electrochemical Self-Assembly of CuSCN/4-Cyano-4'-(N'-methyl)stilbazolium Hybrid Thin Films, Other

20th International Young Scientists Conference Optics and High Technology Material Science, Domestic presentation, 2019.09, Various ionic crystals from the combination of 1,3-bis(dicyanomethylidene)indan anion and cations, Oral presentation (invited, special)

20th International Young Scientists Conference Optics and High Technology Material Science, International presentation, 2019.09, Various ionic crystals from the combination of 1,3-bis(dicyanomethylidene)indan anion and cations, Other

Synthesis, Crystal Structure and Properties of Indoline-Based Tricarbocyanine with Sulfopropyl Substituents, International presentation, 2019.09, Synthesis, Crystal Structure and Properties of Indoline-Based Tricarbocyanine with Sulfopropyl Substituents, Other

Synthesis of π-Electron Systems with Direct Conjugation between Lewis Acid and Base Moieties and Their Ion-Addition Effect, International presentation, 2019.09, Synthesis of π-Electron Systems with Direct Conjugation between Lewis Acid and Base Moieties and Their Ion-Addition Effect, Other

Synthesis of Multicomponent Crystals Containing Pyridinium Benzenesulfonate, International presentation, 2019.09, Synthesis of Multicomponent Crystals Containing Pyridinium Benzenesulfonate, Other

Synthesis of Carboxylated Viologen Cations and Formation of CT Salts with 1,3-Bis(dicyanomethylidene)indan Anion, International presentation, 2019.09, Synthesis of Carboxylated Viologen Cations and Formation of CT Salts with 1,3-Bis(dicyanomethylidene)indan Anion, Other

Synthesis of a Cross-Conjugated Molecule with Lewis Acid and Base Moieties and Its Ion-Addtion Effect, International presentation, 2019.09, Synthesis of a Cross-Conjugated Molecule with Lewis Acid and Base Moieties and Its Ion-Addtion Effect, Other

Dye Loading Mechanism in Electrochemical Self-assembly of CuSCN / Organic Dye Hybrid Thin Films, International presentation, 2019.09, Dye Loading Mechanism in Electrochemical Self-assembly of CuSCN / Organic Dye Hybrid Thin Films, Other

2019 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2019), Domestic presentation, 2019.08, Design and Synthesis of π-Conjugated Ionic Crystals toward Electronic Applications, Oral presentation (general)

2019 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2019), International presentation, 2019.08, Design and Synthesis of π-Conjugated Ionic Crystals toward Electronic Applications, Other

The First International Conf erence of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, π-Conjugation Extension of EO Dyes by Reactions of a Pyrroline Acceptorwith Aniline Derivatives, Poster presentation

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, Novel Organic CT Salts of 1,3-Bis(dicyanomethylidene)indan Anion and Viologen Cations with Different Linear Alkyl Chain Lengths, Poster presentation

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, Photoluminescent Property of Electrochemically Self-Assembled CuSCN/Dye Hybrid Thin Films, Poster presentation

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, Fabrication of Electrically Conductive Nanofibers Composed of Tetrathiafulvalene-Dirsulfide Derivatives Having Various Side Chains, Poster presentation

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, Crystal Structures and Photoelectronic Properties of Styrylpyridinium Derivatives with TCNQ Radical Anion, Poster presentation

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, Solid-State Polymerization of Pyrenylbutadiyne Derivatives Substituted with a Trialkoxyphenyl Group and Physical Properties of the Polymers, Poster presentation

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), Domestic presentation, 2019.01, Crystal Structures and Properties of Cyanines with Symmetrical π-Conjugation Accompanied by Various Counter Anions, Poster presentation

The First International Conf erence of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, π-Conjugation Extension of EO Dyes by Reactions of a Pyrroline Acceptorwith Aniline Derivatives, Other

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, Solid-State Polymerization of Pyrenylbutadiyne Derivatives Substituted with a Trialkoxyphenyl Group and Physical Properties of the Polymers, Other

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, Photoluminescent Property of Electrochemically Self-Assembled CuSCN/Dye Hybrid Thin Films, Other

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, Novel Organic CT Salts of 1,3-Bis(dicyanomethylidene)indan Anion and Viologen Cations with Different Linear Alkyl Chain Lengths, Other

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, Fabrication of Electrically Conductive Nanofibers Composed of Tetrathiafulvalene-Dirsulfide Derivatives Having Various Side Chains, Other

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, Crystal Structures and Properties of Cyanines with Symmetrical π-Conjugation Accompanied by Various Counter Anions, Other

The First International Conference of Polymeric and Organic Materials in Yamagata University (IPOMY), International presentation, 2019.01, Crystal Structures and Photoelectronic Properties of Styrylpyridinium Derivatives with TCNQ Radical Anion, Other

The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), Domestic presentation, 2018.09, Synthesis and Solid-State Polymerization of Pyrenylbutadiyne Derivatives with Different Alkyl Chain Lengths, Poster presentation

2018 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2018), Domestic presentation, 2018.09, Substituent Engineering of Electrooptic Chromophores to Suppress Their Aggregation, Oral presentation (general)

The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), Domestic presentation, 2018.09, Synthesis of Polymers Containing a Pyrroline-type Acceptor for Electrooptic Applications, Oral presentation (invited, special)

The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), Domestic presentation, 2018.09, Preparation of the Photo-Responsive Ion-Pairing Dimension-Controlled Assemblies, Poster presentation

The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), International presentation, 2018.09, Preparation of the Photo-Responsive Ion-Pairing Dimension-Controlled Assemblies, Other

The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), International presentation, 2018.09, Synthesis of Polymers Containing a Pyrroline-type Acceptor for Electrooptic Applications, Other

The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), International presentation, 2018.09, Synthesis and Solid-State Polymerization of Pyrenylbutadiyne Derivatives with Different Alkyl Chain Lengths, Other

Synthesis and Reactions of an Electrooptic Dye Substituted by Bulky Epoxy Groups, International presentation, 2018.09, Synthesis and Reactions of an Electrooptic Dye Substituted by Bulky Epoxy Groups, Other

Synthesis and Properties of Electrooptic Polymers Substituted by Chromophores with a Pyrroline-type Acceptor, International presentation, 2018.09, Synthesis and Properties of Electrooptic Polymers Substituted by Chromophores with a Pyrroline-type Acceptor, Other

Synthesis and Polymerization of Macrocyclic Butadiyne Compounds with Urethane Groups, International presentation, 2018.09, Synthesis and Polymerization of Macrocyclic Butadiyne Compounds with Urethane Groups, Other

2018 KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2018), International presentation, 2018.09, Substituent Engineering of Electrooptic Chromophores to Suppress Their Aggregation, Other

First International Conference on 4D Materials and Systems, Domestic presentation, 2018.08, Synthesis and Properties of Styrylpyridinium and Styrylquinolinium Derivatives with Various Anions, Poster presentation

First International Conference on 4D Materials and Systems, Domestic presentation, 2018.08, Fabrication of Nanostructures Composed of Tetrathiafuluvalene Derivatives with Various Side Chains, Poster presentation

First International Conference on 4D Materials and Systems, International presentation, 2018.08, Fabrication of Nanostructures Composed of Tetrathiafuluvalene Derivatives with Various Side Chains, Other

First International Conference on 4D Materials and Systems, International presentation, 2018.08, Synthesis and Properties of Styrylpyridinium and Styrylquinolinium Derivatives with Various Anions, Other