Article
Engineering, Chemical
Xinshi Liang, Honglong Hu, Zhi-gang Zheng, Min He, Mengqi Li, Ning Lv, Ning Shen, Wei-Hong Zhu
Summary: A photoresponsive liquid crystal polymer (LCP) film is proposed by incorporating a polymerizable photoswitch into commercial LCP and exposing it to UV light. Photonic microstructures are written on the flexible LCP film using patterned light. A four-dimensional anti-counterfeiting flexible label is constructed with the assistance of the photoresponsive LCP film, featuring photochromism, fluorescence, embedded microstructures, and optical diffraction.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Linghui Shen, Tong Wei, Yongchao Shi, Hanyu Hao, Si Chen, Jiaguang Chen, Hao Guan, Qingjun Zhou, Zepeng Li
Summary: This study introduced a smart phosphor material that can reversibly regulate up-conversion luminescence under visible light irradiation, causing coloration and decoloration processes. The intensity of luminescence can be altered by alternating light irradiation and heating treatment, while polarization treatment can enhance the contrast of up-conversion luminescence.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Applied
Jinxiang Chen, Jin-Yun Wang, Jinru He, Xiangfang Peng
Summary: By synthesizing a new photochromic molecule and conducting experimental and computational studies, researchers found it difficult to achieve stepwise photochromism in certain metal-coordination systems.
Article
Chemistry, Physical
Ruiting Zhang, Yahong Jin, Lifang Yuan, Kaiyuan Deng, Chuanlong Wang, Guangting Xiong, Li Chen, Yihua Hu
Summary: This study reports the integration of multiple optical behaviors in inorganic photochromic Er3+-doped strontium hafnate ceramics, including photochromism, fluorescence modulation, and thermoluminescence. The material exhibits excellent stability and robust fatigue resistance, making it suitable for versatile applications in fields such as security anti-counterfeiting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Jin Tang, Peng Du, Weiping Li, Guoliang Yuan, Zhifu Liu, Laihui Luo
Summary: This study successfully developed a novel multifunctional luminescence phosphor Sr2-xSnO4:xSm(3+), achieving multiple luminescence modulation behaviors in one material. By utilizing photochromism reactions and photo-stimulated luminescence, it offers different approaches for optical storage technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Ruiting Zhang, Yahong Jin, Chuanlong Wang, Haoyi Wu, Li Chen, Yihua Hu
Summary: In this study, a dual excitation detection mode based on SrHfO3:Ho3+ photochromic material was designed, and a simple and high-precision UV intensity detection method was proposed. Flexible films and 3D micro-rod arrays were also fabricated for optical information storage using the obtained photochromic material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Tong Wei, Yongchao Shi, Xiangyu Wang, Jiao Cui, Liwei Wu, Liyan Liu, Jiawei Yan, Zhihong Lv, Yingdong Han, Yanyan Guo
Summary: In this study, tetragonal tungsten bronze (TTB) oxides with intelligent upconversion (UC) luminescence modulation and photochromic (PC) effect were designed by introducing variable valence ion (Mo6+). The UC luminescence switching ratio and PC contrast could be significantly increased, and the real-time information encoding and dual-mode display capacity were realized. This work provides new insights for the design of terminal display devices.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Han Liu, Long Yu, Bingqian Zhao, Yezhou Ni, Peng Gu, Hua Qiu, Wan Zhang, Kunlin Chen
Summary: A hybrid hydrogel with self-healing ability and environmental responsiveness has been developed in this study. This hydrogel exhibits excellent sensing and color-changing properties, making it suitable for monitoring human actions in wearable devices. The damaged parts of the hydrogel can self-repair due to the strong bonds among the polyacrylate, zinc ions, and microcapsules. Additionally, the hydrogel undergoes rapid color change under thermal or UV stimulus, enabling monitoring of human physiological health and achieving adaptive camouflage. This smart hybrid hydrogel has promising applications in human body monitoring, safety warning, adaptive camouflage, and artificial intelligence for wearable electronic devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Xiao Wei, Bao Li, Zhiqiang Yang, Ronglin Zhong, Yufei Wang, Yanan Chen, Zeyang Ding, Guangwen Men, Zairan Yang, Houyu Zhang, Bing Yang, Weiqing Xu, Shimei Jiang
Summary: Engineering the preorganization of photoactive units is a significant challenge in solid-state photochemistry research, with potential theoretical and technological implications. By crystallizing a cyanostilbene derivative into two polymorphs with distinct hierarchical architectures, this study demonstrates the possibility of fabricating advanced materials with unique properties through manipulation of molecular organization in the solid state.
Article
Engineering, Environmental
Yi Zhang, Xihui Shan, Xulong Lv, Dongxun Chen, Shihai Miao, Weili Wang, Yanjie Liang
Summary: A Pr3+ single-doped Li2CaSiO4 phosphor is reported as an efficient multimodal luminescence material, capable of responding to diverse light sources and producing different wavelengths of light emission. This material exhibits persistent luminescence, photo-stimulated luminescence, upconversion luminescence, and photochromism, offering new solutions for applications such as optical information storage and anti-counterfeiting.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Xue Bai, Zhaoshuo Yang, Zan Xu, Yangke Cun, Yingzhu Zi, Heping Zhao, Youyan Song, Yanni He, Asif Ali Haider, Jianbei Qiu, Zhiguo Song, Anjun Huang, Cherkasova Tatiana, Zhengwen Yang
Summary: The combination of photochromism and photoluminescence in SrWO4 material can be used for anti-counterfeiting and optical memory devices. Through alternating UV light and laser irradiation, reversible photochromism from white to dark yellow can be achieved. The photoluminescence modification in SrWO4 material explains its photochromic reaction, and the associated color contrast and luminescence intensity change are utilized for optical memory and anti-counterfeiting applications. Flexible SrWO4 film is a promising alternative that can meet various requirements and enhance practical application security, contributing to the research of photochromism-induced luminescence modulation.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Ceramics
Ziwen Gao, Xue Bai, Heping Zhao, Shasha Fu, Bokun Zhu, Shilei Yan, Keliang Ruan, Xinhao Cai, Wuxi Zhang, Yueteng Zhang, Imran Khan, Asif Ali Haider, Jianbei Qiu, Zhiguo Song, Anjun Huang, Yangke Cun, Cherkasova Tatiana, Zhengwen Yang
Summary: This study achieved reversible regulation of photoluminescence and photochromism by preparing CaWO4: Yb3+, Ho3+, Bi3+ ceramics, improving security and reliability in anticounterfeiting.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yu-Juan Ma, Guowei Xiao, Xiaoyu Fang, Tianhong Chen, Dongpeng Yan
Summary: This study reports an approach to leverage crystalline and amorphous states of a zero-dimensional metal-organic complex for the first time. The complex exhibits negative and positive photochromism due to the competitive chemical routes between photocycloaddition and photogenerated radicals. Different polymorphs lead to the on/off toggling of photo-burst movement, indicating controllable light-mechanical conversion. Three demos were constructed to support their application in information encryption and anti-counterfeiting. This work provides a proof-of-concept for a state- and polymorph-dependent photochemical route, paving an effective way for the design of new dynamically responsive systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Min Ji Kim, Diana J. Wang, Karina Targos, Uriel A. Garcia, Alison F. Harris, Ilia A. Guzei, Zachary K. Wickens
Summary: We have developed a new method for the synthesis of cyclopropanes using abundant carbon pronucleophiles and unactivated alkenes. This scalable protocol exhibits high diastereoselectivity and tolerates diverse functional groups on both coupling partners.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Xin Cheng, Huan Hu, Yu Wu, Zhimin Ma, Zhiyong Ma
Summary: This study reported unique photochromic CL polymers, showing that increasing the ratio of PMA chains in PMAxBA enhances photochromism, cross-linked PMA-CL leads to the formation of larger clusters and redshift, and PBA chains in the cross-linked network weaken interchain interactions and cause a smaller redshift.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yohei Hattori, Shunsuke Tsubaki, Ryota Matsuoka, Tetsuro Kusamoto, Hiroshi Nishihara, Kingo Uchida
Summary: The synthesis and fluorescence properties of polychlorinated pyridyldiphenylmethyl radicals with substituents meta to the alpha-carbon have been studied. Different substituents showed varied effects on the fluorescence behavior of the radicals in different solvents. DFT calculations revealed that the fluorescence properties were related to the nature of the excited states of the radicals.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Kuo-Hui Wu, Ryota Sakamoto, Hiroaki Maeda, Eunice Jia Han Phua, Hiroshi Nishihara
Summary: The study presents an efficient electrochemical method to synthesize pi-conjugated redox metal-complex linear polymer wires on glassy carbon surfaces, demonstrating fast redox conduction properties. The method allows for the creation of anisotropic hetero-metal-complex polymer wires with reversible redox reactions, showing potential for integrating functional molecules onto carbon surfaces.
Article
Chemistry, Multidisciplinary
Ryojun Toyoda, Naoya Fukui, Dionisius H. L. Tjhe, Ekaterina Selezneva, Hiroaki Maeda, Cedric Bourges, Choon Meng Tan, Kenji Takada, Yuanhui Sun, Ian Jacobs, Kazuhide Kamiya, Hiroyasu Masunaga, Takao Mori, Sono Sasaki, Henning Sirringhaus, Hiroshi Nishihara
Summary: This study investigates the use of mixed nickel and copper ions to fabricate coordination nanosheet films based on benzenehexathiolato (BHT). It is found that this heterometallicity results in improved crystallinity and electrical conductivities in the films. Spectroscopic and scattering measurements confirm the formation of a bilayer structure with larger and more oriented grains. These findings open new opportunities for improving the functional properties of 2D coordination nanosheets.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yohei Hattori, Ryota Kitajima, Ryota Matsuoka, Tetsuro Kusamoto, Hiroshi Nishihara, Kingo Uchida
Summary: The luminescence of stable radicals can be enhanced by coordination to metal complexes. The fluorescence quantum yield of F2PyBTM radical in dichloromethane was increased from 4% to 36% by coordination to Au-I metal complex with N-heterocyclic carbene ligand, setting a record for metal-radical complexes.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Tetsuro Kusamoto, Chie Ohde, Shiori Sugiura, Satoshi Yamashita, Ryota Matsuoka, Taichi Terashima, Yasuhiro Nakazawa, Hiroshi Nishihara, Shinya Uji
Summary: In this study, a newly synthesized organic quantum spin liquid (QSL) was investigated for its structure and physical properties. The antiferromagnetic interaction in this QSL was found to be smaller than that in other organic QSLs, while the chi(0) and gamma values were larger. The results provide evidence of the spinon Fermi surface in the QSLs.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Physical
Jingyan Guan, Tigmansu Pal, Kazuhide Kamiya, Naoya Fukui, Hiroaki Maeda, Tetsu Sato, Hajime Suzuki, Osamu Tomita, Hiroshi Nishihara, Ryu Abe, Ryota Sakamoto
Summary: This study demonstrates that a fully pi-conjugated and conductive two-dimensional metal-organic framework (2D MOF) serves as an ideal candidate for hydrogen evolution reaction (HER) cocatalyst, with low stability and suppressing back reactions related to oxygen reduction reactions.
Editorial Material
Chemistry, Multidisciplinary
J. Komeda, K. Takada, H. Maeda, N. Fukui, T. Tsuji, H. Nishihara
Summary: This article features the research of Hiroshi Nishihara's group at Tokyo University of Science, highlighting the growth of a heterolaminated film at the liquid-liquid interface.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Joe Komeda, Kenji Takada, Hiroaki Maeda, Naoya Fukui, Takuya Tsuji, Hiroshi Nishihara
Summary: Recent studies have mainly focused on the discovery of new precursors for molecular 2D materials with high tunability of structure and function. This study demonstrates a facile one-pot synthesis of laminated 2D coordination polymer films and provides insights into their structure and charge transfer properties. The bilayer film shows stable rectification character in a dry condition.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Organic
Hiroto Miyabe, Mizuha Ujita, Masaki Nishio, Toyotaka Nakae, Tsukasa Usuki, Minako Ikeya, Chika Nishimoto, Suguru Ito, Mineyuki Hattori, Satoshi Takeya, Shigenobu Hayashi, Daisuke Saito, Masako Kato, Hiroshi Nishihara, Teppei Yamada, Yoshinori Yamanoi
Summary: A series of octamethyltetrasilanes with different donor and acceptor groups were prepared and their optical properties were studied. Two compounds showed dual emission behavior in solution and reversible photoluminescent change under mechanical and thermal stimuli in the solid state.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Dong Xia, Ken Sakaushi, Andrey Lyalin, Keisuke Wada, Sonu Kumar, Marco Amores, Hiroaki Maeda, Sono Sasaki, Tetsuya Taketsugu, Hiroshi Nishihara
Summary: This study demonstrates the potential of bis(diimino)copper framework for reversible multielectron transfer in electrochemical energy storage. An experiment-theory collaboration reveals the importance of cation-anion interactions in non-oxide abundant electrode systems. It is found that the copper-nitrogen bonds undergo a unique reversible rearrangement during lithium intercalation, leading to significant multielectron transfer. This research provides new insights into affordable multielectron transfer electrodes and presents an alternative strategy for advancing electrochemical energy storage reactions.
Review
Chemistry, Inorganic & Nuclear
Hiroaki Maeda, Kenji Takada, Naoya Fukui, Sayoko Nagashima, Hiroshi Nishihara
Summary: This review focuses on electrically conductive coordination nanosheets (CONASHs) and summarizes recent progress regarding their structural diversity, synthesis, conductive properties, and applications as energy storage materials, electrocatalysts, and sensors. It concludes with future perspectives.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Materials Science, Multidisciplinary
Hwan-Hee Cho, Shun Kimura, Neil C. Greenham, Yuki Tani, Ryota Matsuoka, Hiroshi Nishihara, Richard H. Friend, Tetsuro Kusamoto, Emrys W. Evans
Summary: Fluorescent organic radicals with doublet-spin energy levels can overcome efficiency limits in OLEDs from singlet-triplet photophysics, potentially improving performance. By utilizing electron donor-acceptor mixed hosts to control charge transport, the optoelectronic performance of radical OLEDs can be enhanced.
ADVANCED OPTICAL MATERIALS
(2022)
Review
Chemistry, Inorganic & Nuclear
Tetsuya Kambe, Hiroshi Nishihara, Kimihisa Yamamoto
Summary: This article presents a chemical bottom-up approach for synthesizing single-atomic-layered materials like graphene, focusing on borophene-oxide and metalladithiolene layers. These inorganic materials have graphene-like two-dimensional networks that allow for introducing functionalities, and their atomically thin layers can be obtained through dissolution or synthetic methods. The article also evaluates their two-dimensional electronic features, such as the anisotropic characteristics of borophene-oxide layers and the switching abilities of metalladithiolene layers. Evaluating its importance, I would give a rating of 9 out of 10.
DALTON TRANSACTIONS
(2023)
Article
Polymer Science
Hiroaki Maeda, Kenji Takada, Naoya Fukui, Junzo Ukai, Nobutaka Honma, Sono Sasaki, Hiroyasu Masunaga, Kenichi Kato, Hiroshi Nishihara
Summary: Multilayered coordination nanosheets composed of copper ions and hexaaminobenzene (CuHAB) were synthesized through a liquid-liquid interfacial reaction. The study found that an appropriate oxidizing agent and quantitative addition of base can modulate the chemical structure, crystal structure, and conductivity of the synthesized nanosheets.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shun Kimura, Shojiro Kimura, Ken Kato, Yoshio Teki, Hiroshi Nishihara, Tetsuro Kusamoto
Summary: This study investigated the effect of magnetic field on emission in organic radicals, revealing the importance of spin degrees of freedom in ground-state open-shell molecules for achieving magnetic-field-controlled molecular photofunctions.