Article
Chemistry, Multidisciplinary
Philip Klement, Natalie Dehnhardt, Chuan-Ding Dong, Florian Dobener, Samuel Bayliff, Julius Winkler, Detlev M. Hofmann, Peter J. Klar, Stefan Schumacher, Sangam Chatterjee, Johanna Heine
Summary: The research demonstrates the unique optical properties of single layers of 1D organic-inorganic perovskites, including self-trapped excitons and white-light emission. The thickness dependence of the structure leads to a significant shift in emission energy, challenging conventional understanding.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Tingfang Tian, Xuhui Xiong, Yaxuan Zhao, Hao Li, Wei Wang, Li Wang
Summary: CsAgCl2 is a material with self-trapped exciton emission that can emit warm white light, making it ideal for high color rendering lighting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Zhiyuan Huang, Matthew C. Beard
Summary: This study demonstrates that organic dyes can enhance multiple exciton generation in semiconductor quantum dots (QDs). By using surface-anchored pyrene ligands, the photon-to-charge carrier quantum yield of PbS QDs was significantly increased, leading to improved efficiencies in solar cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Fei Zhang, Xu Chen, Xiaofeng Qi, Wenqing Liang, Meng Wang, Zhuangzhuang Ma, Xinzhen Ji, Dongwen Yang, Mochen Jia, Di Wu, Xin Jian Li, Yu Zhang, Zhifeng Shi, Chong-Xin Shan
Summary: This study presents a facile ion-doping technology to synthesize an efficient single-component white-light emitter Cs2ZrCl6:Sb. The introduction of Sb3+ ions stimulates the emission of singlet and triplet states, resulting in a high-quality white emission. Stable white-light-emitting diodes with a record half-lifetime of 2003 hours were successfully fabricated using Cs2ZrCl6:1.5%Sb as the down conversion phosphor. This research offers an effective ion-doping strategy for the design of single-component white-light emitters, making practical applications in lighting technologies possible.
Article
Multidisciplinary Sciences
Rui Zhou, Laizhi Sui, Xinbao Liu, Kaikai Liu, Dengyang Guo, Wenbo Zhao, Shiyu Song, Chaofan Lv, Shu Chen, Tianci Jiang, Zhe Cheng, Sheng Meng, Chongxin Shan
Summary: The study investigates self-trapped exciton emission in ZnO nanoparticles and demonstrates their application in optical imaging. The research finds that ZnO nanoparticles exhibit multiphoton excited singlet/triplet mixed self-trapped exciton emission, which is of great significance in optical detection and biological photonics.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yang Liu, Ye Wu, Zhili Juan, Xun Sun, Weiguang Zhang, Haibo Zeng, Xiaoming Li
Summary: The lead-free double perovskite Cs2Zr1-xTexCl6 with efficient and stable white-light emission was reported in this study, achieved by introducing Te4+ for bright self-trapped exciton (STE) emission. The phosphor exhibited efficient white luminescence with tunable color temperature and high photoluminescence quantum yield (PLQY) up to 96.1%. The key factors for the highly efficient and tunable white emission were efficient energy transfer between multiple luminescent centers and appropriate doping concentrations.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hongting Chen, Hengyang Xiang, Yatao Zou, Shuai Zhang, Bo Cai, Jibin Zhang, Lintao Hou, Haibo Zeng
Summary: This Perspective article focuses on the potential and challenges of metal halides with self-trapped exciton (STE-MHs) as single-layer emitters in white light-emitting diodes (WLEDs), and proposes possible approaches and future research directions to improve the efficiency of WLEDs based on STE-MHs.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ruijing Fu, Wenya Zhao, Lingrui Wang, Zhiwei Ma, Guanjun Xiao, Bo Zou
Summary: By high-pressure processing, emission enhancement and non-doping control of color temperature can be achieved in two-dimensional perovskite nanocrystals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Arpita Mukherjee, Johannes Feist, Karl Borjesson
Summary: Strong interactions between excitons and photons lead to the formation of exciton-polaritons, which possess completely different properties compared to their constituents. The rate of intersystem crossing from the polariton to the triplet states depends on the energy alignment of the excited polaritonic states. In the strong coupling regime, the rate of intersystem crossing can be substantially enhanced to the point where it approaches the rate of the radiative decay of the polariton.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zhuangzhuang Ma, Zhifeng Shi, Dongwen Yang, Yawen Li, Fei Zhang, Lintao Wang, Xu Chen, Di Wu, Yongtao Tian, Yu Zhang, Lijun Zhang, Xinjian Li, Chongxin Shan
Summary: This study introduces a two-component strategy using two broadband emissive materials with self-trapped excitons (STEs) to produce high CRI and stable WLEDs. By synthesizing copper-based ternary halides composites, the research demonstrates cold/warm tunable WLEDs with high CRI and excellent stability. These results highlight the potential of using hybrids of STEs-derived broadband emissive materials for high-performance WLEDs.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Arpita Mukherjee, Johannes Feist, Karl Borjesson
Summary: Strong interactions between excitons and photons lead to the formation of exciton-polaritons. The relaxation of polaritonic states enables a new kind of energy transfer event. The rate of intersystem crossing from the polariton to the triplet states depends on the energy alignment of the excited polaritonic states. In the strong coupling regime, the rate of intersystem crossing can be substantially enhanced, which has potential applications in molecular photophysics/chemistry and organic electronics.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Optics
Peiyu Fang, Peihao Huo, Liding Wang, Zifeng Zhao, Gang Yu, Yanyi Huang, Zuqiang Bian, Zhiwei Liu
Summary: Efficient single-emitting-layer white organic light-emitting diodes (WOLEDs) with a maximum external quantum efficiency of 15.9% and CIE coordinates of (0.33, 0.39) were demonstrated using a cerium complex and an europium complex as emitters. The electroluminescence mechanism involving direct hole capture and hindered energy transfer between the two emitters enabled a manageable doping concentration of the low-energy emitter, avoiding the limitation of low concentration in typical SEL-WOLEDs. The results suggest that d-f transition emitters have the potential to simplify energy level regulation and enhance the development of SEL-WOLEDs.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Qingxun Guo, Xue Zhao, Boxiang Song, Jiajun Luo, Jiang Tang
Summary: This article provides an overview of recent progress on self-trapped exciton (STEs) emission materials for optoelectronic applications. The relationships between the fundamental emission mechanisms, chemical compositions, and device performances are systematically reviewed. Additionally, the existing challenges and potential development opportunities in this field are discussed.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Shunan Ding, Qi Zhou, Guojian Ren, Yonghang Yang, Cong Wang, Guang Che, MeiLing Li, Danfeng He, Qinhe Pan
Summary: In this study, three Ln-MOFs (HNU-82-84) were synthesized by assembling rare earth ions (Tb3+, Eu3+, La3+) and 4,4',4''-nitrilotribenzoic acid (H(3)TCA) ligands. The optical properties of these compounds were investigated and a single-phase white material was successfully designed and synthesized. In addition, HNU-82 showed strong fluorescence emission and good water stability, making it a potential fluorescent sensor for detecting NZF and NFT in the aquatic environment.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Zhi-Run Wang, Jun-Qiang Chen, Qiao-Hong Li, Hai-Xia Zhang, Jian Zhang
Summary: This study reports 2D lead-MOFs that generate white light through the combined effect of free excitons and self-trapped excitons. The synthesized BIF-142-Cl exhibits outstanding white-light emission with color coordinates close to pure white light, excellent color rendering index, and gentle correlation color temperature. Additionally, the emission can be adjusted from blue to white light by changing the excitation wavelength. This synthetic strategy not only offers potential for solid-state lighting materials but also expands possibilities in anticounterfeiting, display media, and information identification fields.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tianxin Bai, Xiaochen Wang, Zhongyi Wang, Sujun Ji, Xuan Meng, Qiujie Wang, Ruiling Zhang, Peigeng Han, Ke-li Han, Junsheng Chen, Feng Liu, Bin Yang
Summary: Double perovskites (DPs) are promising candidates for white light-emitting diodes (WLEDs) due to their intrinsic broadband emission. In this study, a series of highly luminescent one-dimensional DP-inspired materials were synthesized using a fluorinated organic cation, and efficient warm-white photoluminescence was achieved. By doping a small amount of antimony ion, lead-free metal-halide WLEDs with superior performance were fabricated.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Li Zhao, Guiyin Xu, Yahui Guo, Haixia Zheng, Peng Dong, Junsheng Chen
Summary: This study investigates the deactivation mechanism of trans-form 2'-hydroxychalcone (2'HC) which undergoes photoisomerization and excited state intramolecular proton transfer (ESIPT). Four minimum energy conical intersections (MECIs) are found to be involved in the deactivation process. The results suggest that modifying the molecular structure to enhance the ESIPT process can further improve the practical application of 2'HC as a molecular photoswitch.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Guangyan Qing, Yongxin Chang, Haijuan Qin, Fusheng Zhang, Zhiying Yang, Yahui Zhang, Dongdong Wang, Ce Bi, Miao Guo, Wenjing Sun
Summary: Aggregation-induced emission (AIE) is a unique phenomenon that revolutionizes luminescence. However, the research on AIE has been limited to a few molecular structures, hindering in-depth studies and exploitation of their potential values. In this study, a novel dumbbell AIE skeleton is reported, which overcomes the challenges of difficult modification and low luminous efficiency. The skeleton exhibits strong solid-state emission and diverse modification possibilities, making it applicable in various scenarios.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Zhenqiang Shi, Xiancheng Zhang, Xijing Yang, Xiaoyu Zhang, Fei Ma, Hui Gan, Junjun Chen, Dongdong Wang, Wenjing Sun, Jingxia Wang, Cunli Wang, Liting Lyu, Kaiguang Yang, Lijing Deng, Guangyan Qing
Summary: A robust strategy based on phage display screening and hemocompatible peptide bottlebrush polymer design is proposed for specific clearance of targeted Lipopolysaccharide (LPS) from circulating blood. A novel peptide with high affinity, specificity, and neutralization activity against the targeted LPS is discovered. This work provides a universal paradigm for developing a highly selective hemoadsorbent library fully covering the LPS family, promising for a new era of precision medicine in sepsis therapy.
ADVANCED MATERIALS
(2023)
Review
Biochemical Research Methods
Xiaohuan Huang, Ying Han, Junrong Li, Mingliang Tang, Guangyan Qing
Summary: Increasing evidence supports the critical role of saccharides in tumor progression, and their identification and recognition have paved the way for targeted drug preparations. Achieving fluorescence sensing of saccharides has been the focus of extensive research, leading to the design of molecular probes and nanoparticles made of different materials. This paper discusses the current status of carbohydrate sensing based on fluorescence sensing mechanisms, including phenylboronic acid-based and enzyme-based sensing platforms, and highlights efforts to improve recognition mechanisms and sensing properties.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yuting Xiong, Minmin Li, Yuchen Cao, Zan Li, Yongxin Chang, Xinjia Zhao, Guangyan Qing
Summary: Protein methylation is a crucial post-translational modification, and the development of an efficient tool for its recognition and detection is challenging. In this study, researchers designed a nanofluidic electric sensing device based on a functionalized nanochannel, which can selectively detect lysine methylpeptides and monitor the lysine methylation process in real time.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Ce Bi, Xiangyu Zhao, Zhiqi Jia, Yongxin Chang, Hang Yang, Mengyuan Song, Xin Zhang, Yahui Zhang, Guangyan Qing
Summary: This paper innovatively reports a method for the electrochemical reduction of diarylketones or aryl alkenes in a mixed solvent system of CH3CN/THF. The reaction proceeds smoothly, and the corresponding products are obtained in high yields. The mechanistic study shows that the reaction is a free radical reaction, and reveals the necessity of CH3CN solvent, which plays the three roles of solvent, proton donors, and reactant at the same time. Furthermore, the high yield of the gram-scale experiment successfully confirmed the potential industrial application of this electrochemical method.
Article
Chemistry, Physical
Junsheng Chen, Ajeet Kumar, Cecilia Cerretani, Tom Vosch, Donatas Zigmantas, Erling Thyrhaug
Summary: Due to desirable optical properties, such as efficient luminescence and large Stokes shift, DNA-templated silver nanoclusters (DNA-AgNCs) have received significant attention over the past decade. In this study, we investigate the early time relaxation dynamics of a 16-atom silver cluster (DNA-Ag16NC) with NIR emission and an unusually large Stokes shift. By using ultrafast optical spectroscopy, we extract a kinetic model to clarify the physical picture of the photoinduced dynamics, which can guide further research on the electronic structure and dynamics of these novel objects and their potential applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Xin Mao, Zhongyi Wang, Fen Zhang, Hong Yin, Xin Xu, Junsheng Chen, Zhen Chen, Junhua Luo, Keli Han, Ruiling Zhang
Summary: In this paper, the synthesis and photophysical properties of high-quality Sb3+-doped 0D Rb2ScCl5(H2O) perovskite single crystals are reported. It is found that the emission quantum yield can be dramatically enhanced from less than 1% to about 53% via Sb3+ doping. Spectroscopic characterizations indicate that the photoluminescence enhancement is a result of the efficient energy transfer from Sb3+ to the emissive self-trapped excitons. Additionally, 0.2%Sb3+:Rb2ScCl5(H2O) single crystals exhibit potential application in direct X-ray detection with a high sensitivity of 58.5 mu C Gy-1 cm-2.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jie Hou, Runze Liu, Peigeng Han, Cheng Luo, Zhiling Ding, Wei Zhou, Cheng Li, Juntao Li, Yang Zhao, Junsheng Chen, Jianyong Liu, Bin Yang
Summary: By manipulating the phase, size, morphology, and chemical composition of manganese doped cesium zinc halide nanocrystals, the intrinsic and extrinsic factors affecting the localized exciton photoluminescence can be decoupled, which determines the emission efficiency. Unlike for free excitons, the phase and crystal morphology do not play major roles for the localized exciton-based photoluminescence. This work provides a new insight for the study of localized exciton dynamics in metal halide nanocrystals.
Article
Chemistry, Multidisciplinary
Ziran Liu, Qian Li, Lulu Fu, Jide Wang, Jing Ma, Chunfeng Zhang, Rui Wang
Summary: Polymerizing small-molecular acceptors (SMAs) is a promising strategy for constructing high-performance polymer acceptors in all-polymer solar cells (all-PSCs), with the microstructure of molecular packing playing a critical role in regulating the excited-state dynamics during photon-to-current conversion.
Article
Chemistry, Analytical
Lang Peng, Cunli Wang, Qiwen Lin, Yongxin Chang, Xiaoyu Zhang, Jing Wang, Zan Li, Zhiying Yang, Wenjing Sun, Wenqi Lu, Dongdong Wang, Guangyan Qing
Summary: Oxidation and protein phosphorylation are critical in regulating cellular activities. A new nanochannel device has been developed to detect both oxidation and protein phosphorylation using modified peptides. The device shows a sensitive response to reactive oxygen species and phosphorylated peptides, enabling the detection of cellular signaling pathways and kinase activity.
ANALYTICAL CHEMISTRY
(2023)
Article
Agriculture, Multidisciplinary
Mingyang Li, Xiaoyu Zhang, Yiwen Zhu, Xiancheng Zhang, Zhiyong Cui, Ninglong Zhang, Yue Sun, Zhiying Yang, Wenli Wang, Cunli Wang, Yin Zhang, Yuan Liu, Guangyan Qing
Summary: Researchers identified two high-affinity peptides (MTLERPW and MNLHLSF) using a phage display library, which were found to enhance umami taste. This study demonstrates the first development of umami peptides through phage display technology.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Si Li, Fengrui Hu, Yanfeng Bi, Hongyu Yang, Bihu Lv, Chunfeng Zhang, Jiayu Zhang, Min Xiao, Xiaoyong Wang
Summary: In this study, the carrier transport behavior of solid films of giant CdSe/CdS NCs was investigated using transient absorption microscopy. It was found that at high pump fluences, the carrier transport distance could reach up to 2 μm within 30 ps after laser pulse excitation. These findings not only provide transport information in the regime of high laser pump fluences, but also shed light on the rational design of high-power light detecting schemes based on colloidal NCs.
Article
Materials Science, Multidisciplinary
Tianxin Bai, Xiaochen Wang, Yanmei He, Haiwen Wei, Yan Su, Junsheng Chen
Summary: Low dimensional lead-free metal halides have attracted attention in the development of multifunctional optoelectronic materials due to their tunable properties. However, most reported metal halides only work in the UV-visible range and suffer from limited thermal stability or solution processability. In this study, a hybrid cation approach is proposed to develop a zero-dimensional metal halide with both thermal stability and solution processability, using mixed organic-inorganic cations. This material shows multifunctional properties such as thermochromism, light detection, and NIR light emitting.
ADVANCED OPTICAL MATERIALS
(2023)
