Review
Chemistry, Multidisciplinary
Xuefeng Yang, Xue Jin, Tonghan Zhao, Pengfei Duan
Summary: Circularly polarized luminescent materials have great potential in research fields, but the most important parameter, luminescence dissymmetry factor (g(lum)), has not been satisfactory, especially for organic small molecules. Therefore, finding ways to obtain high g(lum) values has become an urgent challenge in the CPL research field, leading to various strategies being proposed.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Dan Qu, Matteo Archimi, Andrea Camposeo, Dario Pisignano, Eyal Zussman
Summary: A method of fabricating circularly polarized lasers using cellulose nanocrystals and a laser dye through evaporation-induced assembly is presented, showing controlled chiral nematic structure and modification of laser polarization state into left-handed, resulting in strong and tailored CP laser emission.
Article
Chemistry, Multidisciplinary
Guodan Wei, Mengfan Lu, Kai Feng, Sijia Ma, Yuqian Jiang, Zhaoxia Jin
Summary: The chiral nematic nanostructure formed from cellulosenanocrystal (CNC) self-assembly has great potential for generating circularly polarized luminescent (CPL) light. This study compares single-layered and double-layered CNC-based CPL devices with different luminophores and demonstrates that a double-layered CNC structure enhances the CPL dissymmetry factor. The introduced gold nanorods coated with SiO2 layer further enhance the dissymmetry factor and quantum yield of the CNC composites.
Review
Materials Science, Multidisciplinary
Yadong Zhang, Shu Yu, Bing Han, Yunlong Zhou, Xiuwen Zhang, Xiaoqing Gao, Zhiyong Tang
Summary: Due to their magnetic photophysical properties, circularly polarized luminescence (CPL) materials have attracted significant interest. This review provides a comprehensive overview of this field, including theory, experiments, and categorization of CPL-active materials. It also discusses the factors influencing the dissymmetry factor and luminescence efficiency, as well as the opportunities and challenges for enhancing both factors.
Article
Chemistry, Multidisciplinary
Xuekang Yang, Jiawei Lv, Jing Zhang, Tianxi Shen, Tingyang Xing, Fenglian Qi, Shaohua Ma, Xiaoqing Gao, Wei Zhang, Zhiyong Tang
Summary: This paper describes a new approach to obtain intense and tunable circularly polarized luminescence (CPL) by doping semiconductor quantum dots into inorganic chiral photonic crystals (CPCs). The sign, position, and intensity of CPL peaks can be precisely controlled by manipulating the photonic band gap of CPCs or the luminescence wavelength of quantum dots.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Dan Zhang, Hongzhi Zheng, Xiaoting Ma, Lina Su, Xiaoqing Gao, Zhiyong Tang, Yan Xu
Summary: This study presents a method for preparing materials with ultra-long CPRTP and controllable handedness using cellulose and silica, and demonstrates their potential in the development of anticounterfeiting optical labels.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Andre Martin Thomas Muthig, Ondrej Mrozek, Thomas Ferschke, Maximilian Roedel, Bjoern Ewald, Julia Kuhnt, Carsten Lenczyk, Jens Pflaum, Andreas Steffen
Summary: This article presents a molecular emitter that combines circularly polarized luminescence (CPL) with high radiative rate constants of the triplet exciton decay. The emitter shows efficient thermally activated delayed fluorescence (TADF) and high sensitivity to hydrogen bonding of the ligands. The mechanism behind this behavior is a thermal equilibrium between excited states and inter-ligand C-Hmiddotmiddotmiddot pi interactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Qi Guo, Mingjiang Zhang, Shanshan Zhao, Yajie Zhou, Yaxin Wang, Shan Jin, Jie Zhang, Hong-Bin Yao, Manzhou Zhu, Taotao Zhuang
Summary: In order to combat the increasing global counterfeiting, it is necessary to develop advanced anti-counterfeiting tags with unusual optical characters and complex security features, which has not yet been achieved. This study designs a stable circularly polarized luminescence (CPL) material that achieves multimodal-responsive, interactive/changeable information encryption-decryption, resembling a proof-of-principle blockchain-like integrated anticounterfeiting system. The obtained security materials are further encapsulated into a fiber to expand their functionality to flexible fabrics, creating an intelligent textile with color-adaptable function along with environmental change.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Junhui Zhang, Lixiong Dai, Alexandra M. Webster, Wesley Ting Kwok Chan, Lewis E. Mackenzie, Robert Pal, Steven L. Cobb, Ga-Lai Law
Summary: This study reports the design and synthesis of magnetically responsive Circularly Polarized Luminescence (CPL) complexes with exceptional photophysical properties by introducing chiral substituents onto macrocyclic scaffolds. These chiral Eu-III complexes exhibit magnetic CPL responses and show a linear relationship between Δg(lum) and magnetic field strength, providing potential development for CPL imaging applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Yingyu Zhu, Zhanxiang Chen, Ao Ying, Shaolong Gong, Tao Wang, Chuluo Yang
Summary: This work presents a simple strategy to induce and enhance the luminescence dissymmetry factor (g(lum)) of chiral thermally activated delayed fluorescence emitters by co-assembly with liquid crystals. Large g(lum) values of +7.26 x 10(-2) and -5.45 x 10(-2) were obtained for FAC-PDMLM and PXZ-PDMLM, respectively.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Xuerong Lin, Guanghui Ouyang, Minghua Liu
Summary: This study presents a rational approach to design organic π-materials with both circularly polarized luminescence (CPL) and the supramolecular chirality-directed chiroptical photothermic effect. By combining charge-transfer interaction with spacer effect and controlled protonation of pi-histidine, the resulting materials exhibit intense CPL and chiroptical photothermic effects.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Tonghan Zhao, Jianlei Han, Yonghong Shi, Jin Zhou, Pengfei Duan
Summary: This study successfully constructed a dual CPL switch with light-responsive properties by loading a luminescent substance and nanoparticles into metal-organic frameworks. A reversible UC-CPL switch was realized through energy transfer, with significantly amplified asymmetry factor compared to DS-CPL. A chiroptical logic circuit with a 2D information output was designed using UV, visible, and NIR light inputs.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Chang-Chun Fan, Xiang-Bin Han, Bei-Dou Liang, Chao Shi, Le-Ping Miao, Chao-Yang Chai, Cheng-Dong Liu, Qiong Ye, Wen Zhang
Summary: A pair of 2D chiral perovskite ferroelectrics with enhanced CPL detection performance have been reported in this study, achieved through the chirality-transfer-induced chiral&polar ferroelectric phase.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Applied
Minglin Shi, Xiaoyong Chang, Wei Lu
Summary: A series of planar chiral macrocyclic compounds derived from [2.2]-paracyclophane scaffold and helicenes were synthesized and found to exhibit efficient circularly polarized emission. These compounds and helicenes were used as activators in peroxyoxalate chemiluminescence. Compound 2R, which contained electron-donating dimethylamino groups and had the lowest oxidation potential, showed the highest chemiluminescence quantum yield of 0.21% (higher than 0.17% for 9,10-diphenylanthracene at a concentration of 1.0 x 10-4 mol dm-3). Significant circularly polarized chemiluminescence with dissymmetry factors (|gCL|) ranging from 1.4 x 10-3 to 5.4 x 10-3 was observed for these chiral chemiluminescent activators.
Article
Materials Science, Multidisciplinary
Jiahe Li, Yifan Xie, Zeyu Feng, Chutian Zhang, Hongli Zhang, Xin Chen, Gang Zou
Summary: We demonstrate a simple and scalable method to fabricate macroscopic chiral assemblies of Ag nanowires in poly(vinyl alcohol). These nanocomposites can convert achiral fluorescence into circularly polarized luminescence, with the handedness depending on the stirring direction and spectral overlapping. The orientation and optical activity of the Ag nanowires assemblies can be reversibly modulated during mechanical stretching and shape recovery processes. Inkjet printing technology can be used to easily fabricate flexible and programmable circularly polarized luminescence patterns. This method provides a new avenue for rational designs and applications of smart chiroptical devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Cheng Zhang, Yuan Guo, Dan He, Jouji Komiya, Go Watanabe, Takuya Ogaki, Chengyuan Wang, Atsuko Nihonyanagi, Hiroyuki Inuzuka, Hao Gong, Yuanping Yi, Kazuo Takimiya, Daisuke Hashizume, Daigo Miyajima
Summary: Researchers reported a rational strategy for designing polar materials and successfully synthesized and characterized 12 single crystals. It was demonstrated that it is possible to predict the favorability of polar assemblies by estimating their lattice energies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Kazuto Nakamura, Shinya Sugiura, Fumito Araoka, Satoshi Aya, Yoichi Takanishi, Go Watanabe, Ryuma Sato, Yasuteru Shigeta, Hiromitsu Maeda
Summary: This study investigated the use of nonconventional bent-core pi-electronic systems as building units of stimuli-responsive assemblies. The electric-field induced changes in mesophase behaviors were observed, with dynamic changes in polarized optical microscopy textures.
Article
Biochemistry & Molecular Biology
Shigetaka Yoneda, Takami Saito, Daisuke Nakajima, Go Watanabe
Summary: The study utilized molecular dynamics simulations and potential of mean force analysis to calculate the transport of 5-OXA within heterotetrameric sarcosine oxidase, confirming that tunnel T3 serves as the exit pathway for 5-OXA.
PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS
(2021)
Review
Chemistry, Multidisciplinary
Shohei Kumagai, Hiroyuki Ishii, Go Watanabe, Craig P. Yu, Shun Watanabe, Jun Takeya, Toshihiro Okamoto
Summary: Organic semiconductors (OSCs) have potential applications in flexible and printed electronic devices, but the practical use of Organic thin-film transistors (OTFTs) is limited by lower carrier mobilities. N-type OSCs lag behind p-type OSCs in carrier mobility due to difficulties in achieving compatibility between aggregated structures and electron affinity. Rational molecular design principles are still needed for high-end device applications.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Polymer Science
Kazuki Fukushima, Kodai Matsuzaki, Masashi Oji, Yuji Higuchi, Go Watanabe, Yuki Suzuki, Moriya Kikuchi, Nozomi Fujimura, Naofumi Shimokawa, Hiroaki Ito, Takashi Kato, Seigou Kawaguchi, Masaru Tanaka
Summary: A novel polymer conjugate has been developed to form anisotropic nanoassemblies independent of the crystalline nature of the hydrophobic block. Molecular dynamics simulations show that rigid hydrogen-bonding motifs contribute to the anisotropic alignment of block copolymers, and amorphous hydrophobic blocks containing these motifs can form nonspherical assemblies. Enhanced cell proliferation is observed in cell cultures containing anisotropic polymer assemblies with specific aspect ratios or lengths.
Article
Biochemistry & Molecular Biology
Takashi Matsui, Eiji Kojitani, Taichi Takasawa, Arisa Suto, Ami Tamari, Go Watanabe, Yoshio Kodera
Summary: Structural proteomics techniques are valuable in identifying protein binding sites. This study analyzed the solvent-accessible surface of human serum albumin using covalent protein labeling and compared it to surfaces derived from 27 PDB structures. The results revealed inconsistencies in solvent-accessible surface area values calculated from PDB structures, which are attributed to the lack of PDB data representing structures in solution.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Kazuma Hamaguchi, Huanjun Lu, Shota Okamura, Satoshi Kajiyama, Junya Uchida, Shunsuke Sato, Go Watanabe, Yoshiki Ishii, Hitoshi Washizu, Goran Ungar, Takashi Kato
Summary: In this study, a combined experimental and computational approach was used to investigate the self-assembly and reentrant behavior of a single-component thermotropic liquid crystal for dynamically functional materials. A designed mesogenic molecule with an unprecedented sequence of layered smectic phases was synthesized, and it exhibited switching functions due to competition between mesogen stacking and conformational flexibility. Ion-conductive reentrant liquid-crystalline materials, showing multistep conductivity changes, were developed.
Article
Biophysics
Takeshi Serizawa, Saeko Yamaguchi, Moe Amitani, Sawa Ishii, Hiromi Tsuyuki, Yukiko Tanaka, Toshiki Sawada, Izuru Kawamura, Go Watanabe, Masaru Tanaka
Summary: Cellulose-based crystalline assemblies constructed in a bottom-up manner are gaining attention as chemically stable and designable materials at the nano-to macroscale. However, there is limited understanding of their interactions with biomolecules and how to control them through molecular design.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Physical
Kazuma Hamaguchi, Huanjun Lu, Shota Okamura, Satoshi Kajiyama, Junya Uchida, Shunsuke Sato, Go Watanabe, Yoshiki Ishii, Hitoshi Washizu, Goran Ungar, Takashi Kato
Article
Multidisciplinary Sciences
Yusuke Kawashima, Tomoyuki Hamachi, Akio Yamauchi, Koki Nishimura, Yuma Nakashima, Saiya Fujiwara, Nobuo Kimizuka, Tomohiro Ryu, Tetsu Tamura, Masaki Saigo, Ken Onda, Shunsuke Sato, Yasuhiro Kobori, Kenichiro Tateishi, Tomohiro Uesaka, Go Watanabe, Kiyoshi Miyata, Nobuhiro Yanai
Summary: Singlet fission (SF) can create spin-polarized quintet states in organic systems, and here the authors demonstrate that SF in supramolecular assemblies of pentacene chromophores improves the sensitivity of magnetic resonance of water molecules through dynamic nuclear polarization in a water-glycerol glass.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Go Watanabe, Akane Yamazaki, Jun Yoshida
Summary: Nematic liquid crystals can form chiral nematic structures when doped with chiral molecules, and the helical pitch is inversely proportional to the concentration and inducing power of the chiral dopant. The miscibility of the chiral dopant with the nematic solvent depends on the diffusion coefficient of the solvent.
Article
Chemistry, Multidisciplinary
Craig P. Yu, Shohei Kumagai, Michitsuna Tsutsumi, Tadanori Kurosawa, Hiroyuki Ishii, Go Watanabe, Daisuke Hashizume, Hiroki Sugiura, Yukio Tani, Toshihiro Ise, Tetsuya Watanabe, Hiroyasu Sato, Jun Takeya, Toshihiro Okamoto
Summary: This study reports an asymmetric molecular design approach to improve the solubility and solution-processability of benzo[de]isoquinolino[1,8-gh]quinolinetetracarboxylic diimide (BQQDI), while maintaining its excellent charge transport properties, resulting in materials with high electron mobility and large-area continuous single-crystalline thin films.
Article
Materials Science, Multidisciplinary
Keiko Hiratsuka, Tatsuya Muramatsu, Takuya Seki, Christoph Weder, Go Watanabe, Yoshimitsu Sagara
Summary: In this study, the correlation between the mechanoresponsive luminescent behavior of rotaxane mechanophores and the size of the stopper used in the mechanophores was investigated. It was found that larger stoppers prevent the detachment of the ring molecule, resulting in reversible emission intensity changes, while smaller stoppers lead to irreversible emission intensity changes. Molecular dynamics simulations confirmed these experimental observations. This study demonstrates the ability to create polymers with a wide range of mechanoresponsive luminescence behaviors by varying the size of the stopper.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Tomoyuki Hamachi, Koki Nishimura, Keita Sakamoto, Yusuke Kawashima, Hironori Kouno, Shunsuke Sato, Go Watanabe, Kenichiro Tateishi, Tomohiro Uesaka, Nobuhiro Yanai
Summary: This study demonstrates the successful triplet-DNP of pyruvate by utilizing supramolecular complexation with beta-cyclodextrin, which holds significant importance for the widespread use of ultra-sensitive MRI in cancer diagnosis.
Article
Materials Science, Multidisciplinary
Hiroya Nishikawa, Koki Sano, Saburo Kurihara, Go Watanabe, Atsuko Nihonyanagi, Barun Dhara, Fumito Araoka
Summary: Ferroelectric nematic liquid crystals have unique properties such as high polarization, electro-optic activity, and fluidity. The authors investigate the role of clusters in stabilizing the ferroelectric nematic phase transition by mixing diastereomer molecules. They find that a smooth exchange of the components can tune the ferroelectric nematic phase transition.
COMMUNICATIONS MATERIALS
(2022)
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.
