Article
Engineering, Environmental
Zhaoran Hao, Nengquan Li, Jingsheng Miao, Zhongyan Huang, Xialei Lv, Xiaosong Cao
Summary: This work describes the first example of circularly polarized thermally activated delayed fluorescent (CP-TADF) materials containing heteroatomic stereocenter. The chiral enantiomers assembled in a specific manner exhibit distinct luminescence signals and highly efficient emission in film state.
CHEMICAL ENGINEERING JOURNAL
(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)
Review
Chemistry, Multidisciplinary
Hao Zhang, Lan-Lan Lou, Kai Yu, Shuangxi Liu
Summary: Asymmetric catalysis is essential due to the increasing demand for optically pure substances. Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) show great potential for heterogeneous asymmetric catalysis. The unique properties of MOFs and COFs make them highly active and enantioselective for a wide range of asymmetric catalytic organic transformations.
Article
Chemistry, Physical
Hui Wang, Houlin Wu, Guangling Bian, Ling Song
Summary: In this study, a new luminescent material called BABCz was synthesized by three simple reactions. The material was characterized and tested for its thermal stability and luminescence properties. It was found that BABCz can be doped with CBP to create highly uniform films for the fabrication of OLED devices. The simplest device in the sandwich structure emitted green light at voltages ranging from 6.6 to 12 V and had a brightness of 2300 cd/m(2), suggesting its potential for OLED manufacturing.
Review
Chemistry, Multidisciplinary
Joo Yoon Woo, Min-Ho Park, Su-Hun Jeong, Young-Hoon Kim, Byungjae Kim, Tae-Woo Lee, Tae-Hee Han
Summary: This review summarizes the challenges and progress in the development of solution-processed organic light-emitting diodes (SOLEDs) in both industry and academia. Solution processing offers advantages like material efficiency, low-cost production, and scalability. However, there are complications related to solvent resistance and suitable solution-processable materials, ultimately leading to less efficient and shorter-lived SOLEDs compared to those fabricated by thermal evaporation. This review highlights the current status of SOLED development and presents research guidelines to overcome these limitations and achieve efficient, long-lasting, and commercially-viable SOLEDs.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Organic
Meng Li, Chuan-Feng Chen
Summary: This review provides a systematic summary of the development status and design strategies of chiral TADF-active materials for circularly polarized electroluminescence (CPEL) emitters in organic light-emitting diodes (CP-OLEDs). It covers chiral perturbed TADF molecules, intrinsically chiral TADF molecules, and TADF-sensitized fluorescent enantiomers. The challenges and opportunities of promising TADF-based CPEL are also discussed.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Chemistry, Multidisciplinary
Xuyang Zou, Rui Xue, Zewei An, Hongwei Li, Jiale Zhang, Yan Jiang, Lijie Huang, Wei Wu, Shuangfei Wang, Guo-Hua Hu, Robert K. Y. Li, Hui Zhao
Summary: This review provides an overview of the main strategies and latest research findings on flexible cellulose nanocrystal-based chiral nematic film materials (FCNM). It summarizes the typical substances and methods used for their preparation and compares different kinds of cellulose nanocrystal-based composites in terms of flexibility. The potential applications and future challenges of flexible cellulose nanocrystal-based chiral nematic materials are also discussed, inspiring further research in this field.
Article
Chemistry, Multidisciplinary
Jiale Guo, Jinxing Hou, Juntao Hu, Yajiao Geng, Mengxue Li, Hui Wang, Jinli Wang, Quan Luo
Summary: Enantiomers are pairs of chiral compounds that have similar chemical and physical properties, but often exhibit opposite biological effects. Chiral recognition plays a crucial role in various fields such as medicine, food, and biochemistry. β-cyclodextrin (CD) with its hydrophilic external cavity and hydrophobic internal cavity can enhance the chiral recognition of guest molecules in a chiral sensor by combining with different materials.
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
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
Ling Zhou, Fan Ni, Nan Li, Kai Wang, Guohua Xie, Chuluo Yang
Summary: Purely organic emitters have great potential in near-infrared organic light-emitting diodes, but suffer from low efficiency. This contribution presents the design and synthesis of two pairs of thermally activated delayed fluorescence enantiomers with unique characteristics. The resulting OLEDs show high efficiency and near-infrared emission.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Polymer Science
Jun-Feng Feng, Min Tan, Sheng Zhang, Bang-Jing Li
Summary: Porous materials have been increasingly used in various fields, with cyclodextrins being suitable building units due to their nanoporous structure, ease of modification, and biocompatibility. This review focuses on the recent progress in the fabrication and applications of CD-based porous materials, including CD-MOFs, CD-COFs, and hybrid porous materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Jun-Jian Lu, Zhen-Long Tu, Xu-Feng Luo, Yi-Pin Zhang, Zhong-Ze Qu, Xiao Liang, Zheng-Guang Wu, You-Xuan Zheng
Summary: A blue Ir(iii) complex with chiral phosphine was synthesized and showed decent circularly polarized luminescence activities. The CP-OLEDs demonstrated obvious circularly polarized electroluminescence signals, providing an efficient strategy for the design of chiral blue Ir(iii) emitters and their CP-OLEDs.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Applied
Vetiga Somjit, Chokchai Kaiyasuan, Phakawan Thinsoongnoen, Taweesak Pila, Vinich Promarak, Kanokwan Kongpatpanich
Summary: This study explores the use of highly porous metal-organic frameworks as hosts for commercial luminescent dyes to prevent aggregation and maintain luminescent properties. A prototype Al-based MOF was synthesized as a processable fluid gel and fabricated into a thin film for OLED applications. The composite film showed promising electroluminescence performance with high quantum efficiency.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Engineering, Multidisciplinary
Moon Jong Han, Dong Ki Yoon
Summary: In the current trend towards renewable energy, ecofriendly materials in electronics are gaining research interest for their sustainability and biodegradability, offering industrial benefits and environmental preservation. This review explores the use of sustainable materials in organic electronics, aiming to stimulate interest in their potential applications for green and sustainable industry.
