Article
Nanoscience & Nanotechnology
Renjie Chen, Yan Guan, Hailong Wang, Yan Zhu, Xin Tan, Ping Wang, Xueye Wang, Xinghe Fan, He-Lou Xie
Summary: In this study, a series of organic compounds with twisted electron donor-acceptor structures were successfully designed and synthesized, and then dissolved in MMA to realize single-molecular organic room-temperature phosphorescent materials with long lifetime. When grown into single crystals, multicolor-tunable afterglow was achieved at different delay times, showing promising applications in high-level anticounterfeiting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Mengdie Zhou, Jiafan Zhang, Yueyue Chen, Zhong Chen, Yongjie Yuan, Yongyang Gong, Hailiang Zhang
Summary: In this study, chiral liquid crystals were used to obtain circularly polarized luminescence (CPL) materials with high dissymmetry factor (glum) values. PM6Chol-coated film exhibited efficient CPL due to the helical arrangement of cholesterol, while PM6Chol thermal-treated film showed no CPL signal but demonstrated room-temperature phosphorescence.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Peilong Liao, Tongyue Wu, Cheng Ma, Jianbin Huang, Yun Yan
Summary: Clusterization-triggered emission (CTE) is a powerful strategy for achieving useful luminescence, such as room-temperature phosphorescence (RTP). However, the recognition of CTE-RTP is still limited. In this study, the authors demonstrate phosphorescence resonance energy transfer (PRET) in the CTE-RTP system, allowing precise control over the color of the emission. PRET can occur between CTE-RTP and fluorescent dyes, resulting in delayed fluorescence spanning from green to near infrared. This system enables facile achievement of dynamic afterglow, making it highly appealing for anticounterfeiting applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Biao Zhao, Shenghua Yang, Xueyong Yong, Jianping Deng
Summary: The study presents a simple strategy to achieve ultralong RTP emission in biobased nonconjugated polymers through a hydrolyzation process. The polymers synthesized exhibit enhanced blue emission and persistent RTP, with reversible emission performance regulated by cations or substituents. The obtained polymers show potential applications in anticounterfeiting and information encryption.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Zhen Zhang, Yu-e Shi, Yibo Liu, Yifei Xing, Ding Yi, Zhenguang Wang, Dongpeng Yan
Summary: This study successfully developed efficient and stable deep-blue phosphorescent materials through a heat treatment method and proposed an energy transfer and rigidification mechanism to explain their high emission lifetime and efficiency. These materials demonstrated excellent stability in various harsh environments and can be used for multi-level information encryption.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Liuqi Kong, Yan Zhu, Shaochen Sun, Hongye Li, Shuo Dong, Fei Li, Farong Tao, Liping Wang, Guang Li
Summary: Polymer-based room temperature phosphorescence (RTP) materials have been developed with persistent multicolor and near-infrared (NIR) emission. These materials showed tunable multicolor afterglow and persistent luminescence in the NIR region, making them suitable for applications in multiple information encryption and multicolor displays.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Tianjia Yang, Yuxuan Li, Zihao Zhao, Wang Zhang Yuan
Summary: Nonconventional luminophores have unique photophysical properties and potential applications in various fields, including fluorescence, phosphorescence, and color tunable room temperature phosphorescence (RTP). This article summarizes recent advances in the phosphorescence of nonconventional luminophores, with a focus on RTP and color tunable RTP. The clustering-triggered emission (CTE) mechanism is applied to explain luminescence as clustering-triggered phosphorescence (CTP).
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hai-Xia Wu, Xiao-Min Lu, Jia-Yi Chen, Xiao-Gang Yang, Wen-Jing Qin, Lu-Fang Ma
Summary: Metal-organic frameworks (MOFs) or coordination polymers (CPs) based phosphorescence materials offer a powerful approach for photoelectric and optical recording devices. Through the construction of a nonporous CP with long-lived phosphorescence, the emission color and light-harvesting range can be tuned, while synergistic effects of bias voltage and illumination are found to greatly restrain electron-hole recombination.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Alexander C. Brannan, Nguyen Le Phuoc, Mikko Linnolahti, Alexander S. Romanov
Summary: The molecular design and crystal lattice structure of halobenzonitrile-carbazoles have been investigated to achieve persistent room-temperature phosphorescence (pRTP). The commercially available carbazole derivatives exhibit efficient organic phosphors with high quantum yield and long excited state lifetime. Meanwhile, the laboratory-synthesized carbazole derivatives demonstrate thermally activated delayed fluorescence. In-depth photophysical studies reveal that luminescence originates from the mixed locally excited state/charge transfer state.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Xianhe Zhang, Kok Chan Chong, Zongliang Xie, Bin Liu
Summary: This study reports a strategy to prolong the lifetime of delayed fluorescence to approach that of phosphorescence by manipulating the charge transfer state and the reversed intersystem crossing process of a host-guest system. This enables durable white-light afterglow with great color tunability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Kikuya Hayashi, Kei Fukasawa, Takashi Yamashita, Shuzo Hirata
Summary: In this study, we report a rational design of triplet sensitizers to achieve high-efficiency red afterglow emission at room temperature. By synthesizing sensitizer and acceptor molecules with different conjugated substituents, we found that the long conjugated substituent greatly enhanced the phosphorescence resonance energy transfer (PRET) from the sensitizer to the acceptor, resulting in improved yield of red afterglow emission at room temperature.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Shuang Wang, Yin-Jing Shi, Song Chen, Zhiqing Lin, Zhixin Jiang, Wei-Ming Liao, Jun He
Summary: In this study, an acid-base stable coordination polymer (1) was synthesized using mellitic acid and zinc ions through an organic solvent-free hydrothermal method. 1 possesses a tightly stacked structure and exhibits dual-emission peaks with blue luminescence and blue-green afterglow. Room temperature afterglow transition can be achieved through dehydration operation, and the emission spectra of 1 can be recovered by exposing it to water vapor. The LPL coordination polymer has potential applications in information encryption and anti-counterfeiting due to its unique characteristics.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Longyan Zhang, Hao Peng, Jingyu Zhang, Zhenli Guo, Yishan Jin, Shuwei Zhang, Ye Tao, Chao Zheng, Runfeng Chen
Summary: This study proposes a synergistic strategy to modulate the performance of amorphous OURTP by harmonizing non-conjugated cluster-triggered emission with conjugated aromatic luminance through copolymerization and aggregation engineering. High-performance amorphous blue OURTP with elongated tau(p) and improved phi(p) has been achieved, showing significant water responsibility. These polymers are used to construct rewritable encryption papers with high-resolution anti-counterfeiting patterns and multi-color and multi-level encryption realized by energy transfer. This work not only demonstrates an efficient strategy for designing efficient OURTP polymers with high afterglow performance, but also paves the way for multi-color and stimuli-responsive afterglow and advanced encryption applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Tianjia Yang, Wubeiwen Hou, Wang Zhang Yuan
Summary: This study focuses on bis(pinacolato)diboron (BE1) and its analogue bis(2,4-dimethylpentane-2,4-glycolato)diboron (BE2), which are nonemissive in dilute solutions but show remarkable photoluminescence at aggregate states. The photoluminescence of these compounds can be easily tuned by external factors such as excitation wavelength, compression, and oxygen. The clustering-triggered emission (CTE) mechanism can explain these photophysical properties well.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Xin Zheng, Yuanshan Huang, Wei Lv, Jianzhong Fan, Qidan Ling, Zhenghuan Lin
Summary: This study utilizes synergism between covalent and non-covalent bonds to fix an organic phosphor guest in a rigid inorganic framework, achieving efficient and ultralong room-temperature phosphorescence. By solid-phase synthesis, twelve heavy-atom-free composites are obtained, all of which exhibit highly efficient and persistent phosphorescent properties visible to the naked eye.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Fahmeeda Kausar, Zihao Zhao, Tianjia Yang, Wubeiwen Hou, Yuxuan Li, Yongming Zhang, Wang Zhang Yuan
Summary: The study focuses on constructing sulfur-bearing nonconventional luminophores using click type Michael polyaddition method. Two sulfur enriched nonaromatic poly(thioether sulfone)s are obtained, demonstrating fluorescence-phosphorescence dual emission. The potential application of explosive detection by the prepared polymers is also investigated.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Tianjia Yang, Yunzhong Wang, Jixuan Duan, Shuangyu Wei, Saixing Tang, Wang Zhang Yuan
Summary: This study reports an organic luminogen BEU with multiple persistent room-temperature phosphorescence and thermally activated delayed fluorescence in single crystals, exhibiting time-dependent afterglow effects. The color variation of afterglow in BEU crystals allows for applications in advanced anticounterfeiting and information encryption.
Article
Chemistry, Multidisciplinary
Saixing Tang, Zihao Zhao, Jinquan Chen, Tianjia Yang, Yunzhong Wang, Xiaohong Chen, Meng Lv, Wang Zhang Yuan
Summary: Unprecedented intrinsic fluorescence/phosphorescence dual emissions are reported from various quaternary ammonium salts (QASs), which can be finely regulated by changing multiple factors. This finding refreshes the understanding of QASs and provides inspiration for the fabrication of novel luminophores.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Zihao Zhao, Yuxuan Li, Xiaohong Chen, Yongming Zhang, Wang Zhang Yuan
Summary: By the synergistic interplay between the clustering of electron-rich units and effective hydrogen bonding, guanidine derivatives like dicyandiamide and glycocyamine exhibit robust and color-tunable afterglows.
CHEMICAL COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Tianwen Zhu, Tianjia Yang, Qiang Zhang, Wang Zhang Yuan
Summary: This study demonstrates that succinimide derived cyclic imides can emit room temperature phosphorescence (RTP) in the red and near-infrared (NIR) spectral range with outstanding efficiencies of up to 9.2%, offering a promising strategy for the design of unconventional luminophores with long wavelength emission for advanced applications.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Zhengshuo Wang, Anze Li, Zihao Zhao, Tianwen Zhu, Qiang Zhang, Yongzhi Zhang, Yeqiang Tan, Wang Zhang Yuan
Summary: This study developed a new doped polymer film based on sodium alginate and aromatic carboxylates, which can be easily fabricated through the aqueous solution process. The film is flexible, transparent, and re-dissolvable, and it can exhibit multi-tunable afterglow colors from blue to red and even white. Better controllability can be achieved through co-doping and triplet-to-singlet Forster resonance energy transfer (TS-FRET). The film demonstrates advanced anti-counterfeiting capabilities based on its excitation- and time-dependent as well as TS-FRET-mediated afterglow colors.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bin Liu, Bo Chu, Lixun Zhu, Haoke Zhang, Wang-Zhang Yuan, Zheng Zhao, Wen-Ming Wan, Xing-Hong Zhang
Summary: Clusteroluminescence (CL) materials, a class of luminescent materials with unique properties, have gained increasing attention for their theoretical significance and potential in biological applications. However, the emission mechanism remains a challenge, although through-space interaction has been proposed as a preliminary mechanism. This review summarizes the current understanding of CL materials and discusses strategies to achieve high quantum yield and adjustable emission color. The review also provides a perspective on the mechanism and application of CL materials, inspiring researchers in the development of new functional materials.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoxin Zheng, Quanxiang Han, Qinglian Lin, Cuicui Li, Jinke Jiang, Qing Guo, Xin Ye, Wang Zhang Yuan, Yang Liu, Xutang Tao
Summary: This study demonstrates the high-performance of pure polymer-PAH materials with long-lived room-temperature phosphorescence, which can be used in various applications and fabricated through diverse methods. Their environmental stability makes them a promising option in the field of organic RTPs.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Tianjia Yang, Wubeiwen Hou, Wang Zhang Yuan
Summary: This study focuses on bis(pinacolato)diboron (BE1) and its analogue bis(2,4-dimethylpentane-2,4-glycolato)diboron (BE2), which are nonemissive in dilute solutions but show remarkable photoluminescence at aggregate states. The photoluminescence of these compounds can be easily tuned by external factors such as excitation wavelength, compression, and oxygen. The clustering-triggered emission (CTE) mechanism can explain these photophysical properties well.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Physical
Tianwen Zhu, Shuyuan Zheng, Tianjia Yang, Wang Zhang Yuan
Summary: In this study, the co-crystallization between melamine and cyclic imide-based non-conventional luminophores is reported. The resulting co-crystals have multiple hydrogen bonds and effective clustering of electron-rich units, leading to diverse emissive species with rigid conformations and promoted spin-orbit coupling. As a result, p-RTP co-crystals with enhanced efficiencies and lifetimes of up to 12.0% and 898 ms, respectively, are obtained, along with improved color tunability. These findings may contribute to the rational design of high-performance p-RTP materials and advance our understanding of the mechanism behind color-tunable phosphorescence.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Chunguang Ren, Zhengshuo Wang, Hanlin Ou, Tianjie Wang, Zhipeng Zhao, Yuting Wei, Hua Yuan, Yeqiang Tan, Wang Zhang Yuan
Summary: A kind of amorphous RTP material with ultralong lifetime is fabricated by covalently bonding sodium alginate with arylboronic acid in aqueous phase. The resulting polymer film exhibits distinctive RTP performance with excitation-dependent emissions from cyan to green. These smart materials are successfully applied in data encryption and anti-counterfeiting due to the color-tunable and stimuli-responsive afterglows.
Review
Chemistry, Multidisciplinary
Saixing Tang, Tianjia Yang, Zihao Zhao, Tianwen Zhu, Qiang Zhang, Wubeiwen Hou, Wang Zhang Yuan
Summary: Nonconventional luminophores, lacking extended conjugates, have unique luminescence properties and applications in various fields. These unconventional luminophores possess nonconjugated structures and exhibit intriguing luminescence behaviors.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Yunzhong Wang, Saixing Tang, Yating Wen, Shuyuan Zheng, Bing Yang, Wang Zhang Yuan
MATERIALS HORIZONS
(2020)
