Article
Materials Science, Multidisciplinary
Da-Wei Zhang, Meng Li, Chuan-Feng Chen
Summary: This work reports on axially chiral materials that exhibit both blue-emissive ultralong organic phosphorescence (UOP) and intense circularly polarized luminescence (CPL). The materials have a small energy gap between the S1 and T1 states, promoting the intersystem crossing process and leading to a long phosphorescent lifetime. In addition, the materials show intense CPL and can be used as chiral inducers for liquid crystal materials, achieving a high luminescence asymmetry factor.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lan Yu, Zhisheng Gao, He Cheng, Xin Yan, Hengyu Cao, Guangyao Guo, Huanhuan Li, Ping Li, Runfeng Chen, Ye Tao
Summary: A feasible strategy is proposed to develop colorful circularly polarized organic ultralong room temperature phosphorescence (CP-OURTP) materials from a single-component chiral molecule by introducing a chiral unit into the phosphorescence chromophore. Time-dependent colorful CP-OURTP from yellow to green is obtained by changing the intensity ratios between inherent CP-OURTP and delayed emission at different delayed times. This study provides a potential platform to prepare circularly polarized material systems showing colorful luminescent properties.
Article
Multidisciplinary Sciences
Zizhao Huang, Zhenyi He, Bingbing Ding, He Tian, Xiang Ma
Summary: The development of pure organic room-temperature phosphorescent materials with circularly polarized luminescence has greatly facilitated the integration and systemization of luminescent materials in various science and technological applications. In this study, a type of photoinduced circularly polarized phosphorescent material was constructed by dispersing phosphorescent chiral helical substituted polyacetylenes into a processable poly(methyl methacrylate) (PMMA) matrix. These materials exhibit high absorption and luminescent dissymmetric factors, and also possess dynamic chiro-optical functionality under UV light irradiation.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
So Shikita, Takunori Harada, Takuma Yasuda
Summary: The facile synthesis and chiroptical properties of a new family of circularly polarized luminescence (CPL) materials, axially chiral 1,1 '-bicarbazolyls (BiCz), are reported. The BiCz derivatives emitted intense near-ultraviolet photoluminescence, with a peak at similar to 380 nm. The BiCz enantiomers showed mirror-image circular dichroism and CPL, with g(lum) values on the order of 10(-4) in solution.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jiao Liu, Zhen-Peng Song, Juan Wei, Jun-Jie Wu, Meng-Zhu Wang, Jian-Gang Li, Yun Ma, Bing-Xiang Li, Yan-Qing Lu, Qiang Zhao
Summary: An effective strategy is introduced to achieve circularly polarized organic ultralong room-temperature phosphorescence (CP-OURTP) with high glum values and long lifetime using RTP polymers and chiral helical superstructures. The system exhibits excellent stability and is successfully applied for information encryption based on optical multiplexing.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Longyan Zhang, Yishan Jin, Yike Wang, Wenjing Li, Zhenli Guo, Jingyu Zhang, Li Yuan, Chao Zheng, Youxuan Zheng, Runfeng Chen
Summary: This study presents a simple and universal approach to design efficient CPL organic afterglow materials by incorporating chiral chromophores into a nonconjugated clusterization-triggered emissive polymer and using aggregation engineering. High-performance CPL organic afterglow polymers with impressive figures-of-merit were achieved at room temperature, demonstrating potential applications in anticounterfeiting and reversible displays.
ACS APPLIED MATERIALS & INTERFACES
(2023)
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, Physical
Shi-Peng Wan, Hai-Yan Lu, Meng Li, Chuan-Feng Chen
Summary: This article systematically summarizes the development of axially chiral compounds with circularly polarized luminescence (CPL) properties, covering photoluminescence and electroluminescence aspects. The relationship between CPL performance and axially chiral configuration is explored, and the current challenges and opportunities in this field are discussed.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Shuguo An, Liang Gao, Aiyou Hao, Pengyao Xing
Summary: A color-tunable circularly polarized phosphorescence based on RTP was successfully fabricated using a host-guest strategy, allowing for smart control of luminescent color transition and adjustable chiroptical properties.
Article
Chemistry, Inorganic & Nuclear
Lei Wang, Hui Xiao, Lang Qu, Jintong Song, Weilan Zhou, Xiangge Zhou, Haifeng Xiang, Zong-Xiang Xu
Summary: A new series of axially chiral binuclear Pt(II) complexes with bridging ligands of binaphthalenes and octahydro-binaphthalenes and auxiliary ligands of beta-diketones were designed and prepared. These complexes emit orange-red phosphorescence with high quantum yields and can be used as emitters in solution-processed organic light-emitting diodes. The relationship between their chemical structures and luminescence quantum efficiency and asymmetry factor was discussed, providing insights for designing circularly polarized luminescent materials and devices.
INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Fei Nie, Ke-Zhi Wang, Dongpeng Yan
Summary: In this study, the authors report supramolecular glasses based on self-assembled chiral metal-organic complexes with color-tunable circularly polarized afterglow. These materials can achieve multicolored circularly polarized emissions and have potential applications in optical displays and information storage. The research provides a method for the macroscopic self-assembly of chiral metal-organic hybrids and offers supramolecular glasses with wide-tunable afterglow and large circular polarization.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Biao Zhao, Xiaobin Gao, Kai Pan, Jianping Deng
Summary: Chiral perovskites with circularly polarized luminescence (CPL) performance have attracted significant attention. A convenient and universal strategy for constructing chiral helical polymer/perovskite hybrid nanofibers with outstanding CPL properties has been reported in this contribution. The prepared hybrid nanofibers exhibit good long-time stability in air and intense CPL emissions, with the emission color easily tunable by adjusting the precursors of perovskites, providing an efficient technique for various kinds of CPL-active perovskite nanomaterials for both scientific research and future practical applications.
Article
Chemistry, Analytical
Yudong Zhou, Song Lu, Jiahuan Zhi, Ruihong Jiang, Jiahao Chen, Hanbing Zhong, Huifang Shi, Xing Ma, Zhongfu An
Summary: This study demonstrates the preparation of ultralong organic phosphorescent nanoparticles (PDBCz@PVP) with excellent phosphorescence properties, which show promise for biological imaging applications.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Feixiang Wang, Shengju Zhou, Youxin Zhang, Yijie Wang, Rui Guo, Haibin Xiao, Xiaofeng Sun
Summary: Carbonized polymer dots (CPDs) with circularly polarized room-temperature phosphorescence (CPRTP) property were successfully synthesized using sodium alginate and arginine as precursors. The CPDs exhibited chirality, green RTP, and color-tunable CPRTP. The light-harvesting systems based on CPDs and fluorescent dyes achieved energy transfer and chirality transmission/amplification. The CPDs with their unique properties have potential applications in multiple information encryption.
Article
Nanoscience & Nanotechnology
Hongfang Yang, Shuo Ma, Biao Zhao, Jianping Deng
Summary: Chiral small molecules were used to induce chirality in racemic helical polyacetylene via intermolecular pi-pi stacking, resulting in chiral films with strong optical activity. The introduction of fluorescent components generated full-color and white circularly polarized luminescence (CPL). A mechanism called circularly polarized light excitation (CP-Ex) was proposed, showing CPL emission and amplification of luminescence dissymmetry factor under the synergy of CP-Ex and chirality transfer. The CP-Ex mechanism was further verified by a double layered film, and the sense of CPL signals could be switched by changing the direction of excitation light. This work opens new possibilities for exploring tunable multiple-and white-color CPL materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xu-Sheng Du, Ying Han, Chuan-Feng Chen
Summary: The study presented the discovery of chiral pseudo[1]rotaxanes formed by self-inclusion of helic[6]arene, and demonstrated the convenient synthesis of chiral [1]rotaxanes through a specific blocking strategy with successful chirality transfer. This finding provides a new avenue for the synthesis of chiral [1]rotaxanes.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yin-Feng Wang, Xun Liu, Yongheng Zhu, Meng Li, Chuan-Feng Chen
Summary: In this study, a pair of chiral emitters with efficient TADF and AIE properties were designed and synthesized, and successfully applied in the fabrication of CP-OLEDs, achieving high circularly polarized electroluminescence performance.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Review
Chemistry, Physical
Jin-Ming Teng, Da-Wei Zhang, Chuan-Feng Chen
Summary: The review summarizes the recent research on the application of PCP and its derivatives in CPL, discussing molecular design strategies and categorizing emitters based on their chemical structures, providing practical perspectives and inspiration for future research in CPL.
Article
Chemistry, Multidisciplinary
Xiao-Ni Han, Peng-Fei Li, Ying Han, Chuan-Feng Chen
Summary: The study of enantioselective recognition in water by synthetic chiral macrocyclic receptors is important both theoretically and practically. However, achieving enantioselective recognition with high enantioselectivity and affinity in water has been a challenge due to the lack of stable water-soluble macrocyclic receptors with chiral cavities. In this study, a new class of chiral macrocyclic arenes called octopus[3]arenes was introduced. These macrocycles, composed of three homochiral ethenoanthracene subunits, can be easily converted into water-soluble octopus[3]arenes P-1 and M-1. P-1 and M-1 exhibited highly enantioselective recognition towards three pairs of chiral ammonium salts in water, with association constants up to 10(6) M-1 and SIR selectivity up to 12.89.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Ying Li, Yi-Meng Duan, Gui-Hua Chen, Hao-Ran Hu, Xiao-Ni Han, Kun-Peng Wang, Zhi-Qiang Hu, Chuan-Feng Chen
Summary: In this study, the host-guest complexation between pagoda[n]arenes and the tropylium cation was investigated. Both P4 and P5 showed strong binding affinities towards the tropylium cation, with association constants of more than 107 M-1 for the 1:1 host-guest complexes. Theoretical calculations revealed different complexation modes for G@P4 and G@P5, with pi center dot center dot center dot pi and C-H center dot center dot center dot pi interactions playing important roles.
Article
Materials Science, Multidisciplinary
Xing-Yu Chen, Ji-Kun Li, Wen-Long Zhao, Cheng-Zhuo Du, Meng Li, Chuan-Feng Chen, Xiao-Ye Wang
Summary: By using aza[7]helicene as the chiral donor and triazine as the acceptor, a new type of circularly polarized luminescence material has been developed. The influence of the dihedral angle between the donor and acceptor moieties on the dissymmetry factors has been revealed for the first time, offering a novel strategy to enhance dissymmetry factors through engineering the dihedral angles in donor-acceptor type chiral materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Meng-Jie Gu, Xiao-Ni Han, Wei-Chen Guo, Ying Han, Chuan-Feng Chen
Summary: Despite the advances in the chemistry of macrocyclic arenes, synthesizing new macrocyclic arenes from aromatic rings without directing groups remains difficult. However, this study successfully synthesized a new macrocyclic arene, naphth[4]arene (NA[4]A), through macrocycle-to-macrocycle conversion. NA[4]A displayed two distinct conformations in solid state and could be selectively obtained. By co-assembling NA[4]A with 1,2,4,5-tetracyanobenzene (TCNB) at different concentrations and temperatures, two conformation-dependent crystalline luminescent co-assemblies, 1,2-NTC and 1,3-NTC, were selectively prepared. Notably, these assemblies exhibited bright fluorescence, high photoluminescence quantum yields, and color-tunable two-photon excited upconversion emission.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Jin-Ming Teng, Chuan-Feng Chen
Summary: Circularly polarized electroluminescence (CPEL) from thermally activated delayed fluorescence (TADF) emitters has been extensively studied. In this study, a universal strategy for designing deep-red chiral TADF emitters is explored using a pair of chiral donor intermediates. Chiral TADF polymers R-P and S-P are developed through this strategy, exhibiting intense mirror-image circularly polarized luminescence (CPL) signals. Furthermore, solution-processed circularly polarized polymer light-emitting diode (CP-PLED) devices fabricated with R-P and S-P show persuasive performance with high external quantum efficiencies (EQEs) and detectable mirror-image CPEL signals with electroluminescence dissymmetry factors (gEL).
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Liang Zhang, Dingding Yang, Quanxing Li, Zhi-Jun Li, Wen-Bo Zhu, Kejian Chang, Haiyan Song, Chuan-Feng Chen
Summary: Compounds MBZ-mPXZ, MBZ-2PXZ, MBZ-oPXZ, EBZ-PXZ, and TBZ-PXZ were synthesized and found to exhibit TADF properties with lifetimes of 857, 575, 561, 768, and 600 ns, respectively. The short lifetimes of these compounds may be attributed to the combination of small singlet-triplet splitting energy (ΔEST) and benzoate group, which could be an efficient strategy for the design of short-lifetime TADF materials.
Article
Chemistry, Multidisciplinary
Liang Zhang, Wenjing Zhu, Kangkang Gao, Yun Wu, Yani Lu, Chao Shuai, Penghui Zhang, Huicheng Li, Chuan-Feng Chen
Summary: In this study, two compounds, PTZ-MBZ and DMAC-MBZ, were synthesized and found to exhibit TADF properties with lifetimes of 0.80 and 2.17 μs, respectively. The spatially separated highest occupied molecular orbital and lowest unoccupied molecular orbital resulted in a very small singlet-triplet energy gap of 0.0152 and 0.0640 eV, respectively. Therefore, thermally activated delayed fluorescence materials with short lifetimes could be used as promising luminescent materials for organic light-emitting diodes.
Article
Engineering, Environmental
Shi-Peng Wan, Wen-Long Zhao, Ke-Ke Tan, Hai-Yan Lu, Meng Li, Chuan-Feng Chen
Summary: Circularly polarized organic light-emitting diodes (CP-OLEDs) are a promising display technology that can provide higher quality visual enjoyment. By ingeniously designing a pair of chiral CP-TADF enantiomers, (-)-(S)/(+)-(R)-ax-DMAC, the electronic and photophysical properties are finely tuned, leading to a significant improvement in device performance while maintaining the strong chiroptical feature.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Gui-Hua Chen, Yi-Meng Duan, Ying Li, Xiao-Ni Han, Kun-Peng Wang, Zhi-Qiang Hu, Chuan-Feng Chen
Summary: The complexation behaviors of pagoda[n]arenes (n = 4, 5) with ferrocene, ferrocenium, and analogues cobaltocenium have been studied. The inclusion complexes of pagoda[n]arenes can protect ferrocenium from oxidation in organic solvents and improve the stability and oxygen resistance of ferrocenium.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Xiao-Ni Han, Ying Han, Chuan-Feng Chen
Summary: Macrocyclic arenes, such as calixarenes, resorcinarenes, cyclotriveratrylene, and pillararenes, have unique structures, easy functionalization, and a wide range of applications. Recently, there has been a growing interest in the development of novel macrocyclic arenes composed of aromatic building blocks bridged by methylene groups, which have found applications in various research areas. This review summarizes the recent advances in the synthesis and applications of these novel macrocyclic arenes, and highlights their wide applications in molecular recognition and assemblies, molecular machines, biomedical science, and functional materials.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Jia-Qi Wang, Xiao-Ni Han, Ying Han, Chuan-Feng Chen
Summary: This review comprehensively summarizes circularly polarized luminescence materials from chiral macrocycles, especially chiral macrocyclic hosts and their derivatives. It is believed that this review will be of guiding significance and also very helpful for the development of macrocyclic chemistry and CPL materials.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Meng Li, Chuan-Feng Chen
Summary: The TSCP strategy utilizes TADF molecules as sensitizers and CP-FL molecules as emitters to improve the electroluminescence efficiencies of circularly polarized fluorescent emitters, offering a promising method to construct high-performance circularly polarized organic light-emitting diodes. By designing CP-FL emitters with specific characteristics, TSCP-type CP-OLEDs with excellent overall performances can be realized.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)