Article
Engineering, Electrical & Electronic
Heng Yu, Junsheng Yu, Shanyong Chen, Youwei Guan, Lu Li
Summary: A novel phenanthro[9,10-d]imidazole-zinc coordination complex (Zn(TPPI)(2)) was reported in this work, displaying favorable properties for a host material such as suitable HOMO energy level, small singlet-triplet splitting, and good thermal stability. Utilizing Zn(TPPI)(2) as host, yellow-red and red phosphorescent devices showed high efficiencies, and undoped device of Zn(TPPI)(2) also demonstrated good performance in zinc-complex blue emitters. These results indicate that Zn(TPPI)(2) is a promising blue emitter and host material.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Optics
Slawomir Kula, Przemyslaw Krawczyk, Michal Filapek, Anna M. Maron
Summary: This study presented the synthesis and physicochemical properties of three phenanthro[9,10-d]imidazole derivatives with N-donor substituents. The compounds exhibited high thermal stability, reversible oxidation processes, and high quantum yields in various solvents. The research also included detailed theoretical considerations on their properties.
JOURNAL OF LUMINESCENCE
(2021)
Review
Chemistry, Multidisciplinary
Gleiston G. Dias, Marieli O. Rodrigues, Esther R. S. Paz, Mateus P. Nunes, Maria H. Araujo, Fabiano S. Rodembusch, Eufranio N. da Silva Junior
Summary: Fluorescent and colorimetric sensors are important tools for investigating chemical compositions of different matrices. These sensors have high sensitivity, low interference, and low detection limits, inspiring research in ion and molecule detection. This Review focuses on phenanthro[9,10-d]imidazoles, discussing different strategies for obtaining them and their optical properties when interacting with specific analytes.
Article
Materials Science, Multidisciplinary
Siyu Hou, Yan Guo, Tiezheng Miao, Guorui Fu, Wentao Li, Jiaxiang Liu, Baowen Wang, Xingqiang Lu, Lin Liu, Weixu Feng
Summary: By molecular design, a new phenanthro[9,10-d]imidazole-based compound was synthesized, which exhibited strong emissive properties at 462 nm and showed a unique fluorescent turn-off for Cu2+ ion with a low detection limit. This study suggests that the phenanthro[9,10-d]imidazole-derivative could serve as a selective fluorescence and visual sensor platform for Cu2+ ion.
Article
Chemistry, Multidisciplinary
Jiahui Du, Bing Zhao, Wei Kan, Haochun Yin, Tianshu Song, Liyan Wang, Li Sun, Xiuwen Wang, Guangming Yin, Jianxin Wang
Summary: This study reported a novel green-emitting Cu2+-targeted fluorescent sensor, PIA(OH)-Py, that operates synergistically through multiple mechanisms to enhance detection. In the presence of Cu2+, the sensor exhibits strong emission response, allowing for determination of Cu2+ concentration in living cells and real blood samples.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Manish Mannulal Raikwar, Seung Chan Kim, Jun Yeob Lee
Summary: In this study, a new donor-pi-acceptor-type thermally activated delayed fluorescence emitter (BzITz) was designed and synthesized. The effects of the fused rigid donor unit on the photophysical and electroluminescence properties of the emitter were explored. Results showed that BzITz exhibited improved characteristics compared to previous emitters, with a relatively small singlet-triplet energy splitting, a short delayed fluorescence lifetime, and a high photoluminescence quantum yield. An organic light-emitting diode fabricated using BzITz showed enhanced device performance.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Xiangyang Tang, Hui Liu, Futong Liu, Xin He, Xuehui Xu, Jianwu Chen, Qiming Peng, Ping Lu
Summary: Efficient red emitters based on phenanthro[9,10-d]imidazole-naphtho[2,3-c][1,2,5]thiadiazole donor-acceptor derivatives were reported in this study, demonstrating high photoluminescence quantum yield (PLQY) in doped films and relatively high PLQY in neat films. These emitters showed efficient red electroluminescence (EL) in doped devices with a maximum external quantum efficiency (EQE) of 6.96% and 5.92%, respectively.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Masato Nanjo, Tomoka Yoneda, Kentaro Iwamatsu
Summary: The synthesis, molecular structure, and electronic properties of sodium tris(phenanthrene-9,10-diolato)germanate(iv) are described. The germanate complex is readily oxidized in air to produce 9,10-phenanthrenequinone, and the resulting quinones and the ligands reveal intermolecular π-stacking interaction in the polymeric association in the solid state. Addition of phenanthroline to the germanate complex leads to a monomeric structure.
MENDELEEV COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yanjie Du, Heng Zhao, Xiujing Peng, Xiaoyan Zhou, Xiaofeng Yang, Yexin Li, Mei Yan, Yu Cui, Guoxin Sun
Summary: Herein, a phenanthro[9,10-d] imidazole Schiff based turn-on fluorescence sensor (compound 1) was synthesized for detecting Hg2+ in water samples. Compound 1 exhibited high sensitivity (detection limit was 45.76 nM) and rapid response (completed within 5 s) to Hg2+ with a fluorescence change from null to blue. The binding ratio of compound 1 to Hg2+ was determined to be 1:1 with a binding constant of 2.933 x 106 M-1. Detailed analysis and calculations confirmed the fluorescence emission mechanism and recognition mechanism of compound 1.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Applied
Slawomir Kula, Przemyslaw Ledwon, Anna M. Maron, Mariola Siwy, Justyna Grzelak, Marcin Szalkowski, Sebastian Mackowski, Ewa Schab-Balcerzak
Summary: In this study, four new 1-phenyl-1H-phenanthro[9,10-d]imidazole derivatives containing N-donor substituents at the C2 position were synthesized and characterized by high thermal stability and photoluminescence quantum yields. Their thermal, electrochemical, spectroelectrochemical, and optical properties were investigated. Additionally, their electroluminescent ability was preliminarily tested.
Article
Engineering, Environmental
Yang Cheng, Qiang Fu, Xueping Zong, Yixin Dong, Wenhua Zhang, Quanping Wu, Mao Liang, Zhe Sun, Yongsheng Liu, Song Xue
Summary: A new HTM (PI-2) was proposed to improve the performance of perovskite solar cells (PSCs), achieving high efficiency conversion in both types of structured cells through rational design. This HTM exhibits enhanced molecular interactions and hole mobility, leading to improved performance of PSCs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Huixue Li, Xiaofeng Wang, Kun Yuan, Lingling Lv, Zhifeng Li
Summary: This study investigates the thermally activated delayed fluorescence phenomenon of a near-infrared molecule in various environments using first-principles methods and QM/MM technique. The results show the significant impact of surrounding effects on the photophysical properties of the compound, highlighting the importance of considering environmental factors in the design of novel TADF materials. Additionally, an optimally tuned range-separated functional is proposed for simulating excited states with good agreement with experimental values.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Andrzej Olczak, Tomasz Pawlak, Sylwia Kaluzynska, Katarzyna Gobis, Izabela Korona-Glowniak, Katarzyna Susniak, Marcin Zaborowski, Malgorzata Szczesio
Summary: Three new crystal structures of 1H-benzo[d]imidazole derivatives were determined, which exhibited an identical hydrogen bond system, C(4), in their structures. The quality of the obtained samples was tested using solid-state NMR. These compounds were evaluated for their in vitro antibacterial activity against Gram-positive and Gram-negative bacteria, as well as their antifungal activity, based on selectivity. ADME calculations indicated the potential of these compounds as drug candidates.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Roman Linko, Michael Ryabov, Pavel Strashnov, Pavel Dorovatovskii, Victor Khrustalev, Victor Davydov
Summary: Understanding the interactions of organic donor and acceptor molecules in binary associates is crucial for design and control of their functions. The study utilized density functional theory (DFT) to investigate charge transfer complexes of 1,3,6-trinitro-9,10-phenanthrenequinone (PQ) with 23 aromatic pi-electron donors, showing the most effective donors to have charge transfer amounts of 0.134-0.240 e(-) in the ground state. Additionally, a novel charge transfer complex of PQ with anthracene was isolated in crystalline form and its molecular and crystal structure elucidated by single-crystal synchrotron X-ray diffraction.
Article
Chemistry, Physical
Patrick Enders, Michal Majek, Chiu Marco Lam, R. Daniel Little, Robert Francke
Summary: Despite the similarities between photo- and electrocatalysis, the exchange of mediators is rare. This article presents a systematic approach to utilizing electrochemical mediators for photocatalysis, using the phenanthro[9,10-d]-imidazole framework as an example. By adjusting the mediator properties, a broader platform is accessible for both oxidative and reductive transformations.
Article
Chemistry, Physical
Xiangwei Qu, Jingrui Ma, Pai Liu, Kai Wang, Xiao Wei Sun
Summary: This work investigates the voltage sweep behavior of quantum dot light-emitting diodes (QLEDs). It is found that red QLEDs with ZnMgO electron transport layer (ETL) experience a drop in efficiency under consecutive voltage sweeps, while devices with ZnO ETL show an increase in efficiency. The analysis reveals that the efficiency drop in ZnMgO devices is related to hole leakage mediated by trap states on ZnMgO nanoparticles. Furthermore, the hole leakage also causes rapid lifetime degradation of ZnMgO devices.
Article
Public, Environmental & Occupational Health
Yanni Liang, Carri Casteel, Brandi Janssen, Kai Wang, Diane S. Rohlman
Summary: This study found that organizational resources and social support can mitigate mental health risks among farmers. Cooperative farmers reported lower perceived stress and symptoms of depression compared to non-cooperative farmers. Participation in educational programs, program satisfaction, and social support were associated with decreased perceived stress and symptoms of depression.
JOURNAL OF AGROMEDICINE
(2023)
Article
Chemistry, Multidisciplinary
Long Zhang, Shuoxue Li, Huaiyang Sun, Qiwen Jiang, Yue Wang, Yuanyuan Fang, Ying Shi, Defang Duan, Kai Wang, Hong Jiang, Laizhi Sui, Guorong Wu, Kaijun Yuan, Bo Zou
Summary: This study reveals the pressure-induced emission (PIE) mechanism of self-trapping excitons (STEs) in low-dimensional halide perovskites by investigating a 2D layered double perovskite material. The results show that pressure can transform dark-state STEs into bright-state STEs, resulting in a strong broadband Stokes-shifted emission. The theoretical analysis further explains that the suppressed lattice distortion and enhanced electronic dimensionality in the excited-state play crucial roles in stabilizing the bright-state STEs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Electrical & Electronic
Xianda Zhou, Lei Lu, Yang Liu, Kai Wang, Yufeng Guo, Hanbin Ma, Jun Yu, Arokia Nathan, Johnny K. O. Sin
Summary: In the field of emerging heterogeneous power integration applications, power devices need to be fabricated on metal/glass/organics. Amorphous oxide semiconductors (AOSs) have become the dominant semiconductor material for low-temperature fabrication. The tradeoff between specific ON-resistance (R-ON,sp) and breakdown voltage (BV) in AOSs is discussed and found to be different from that in commonly used single-crystal semiconductors. An analytical model is developed to describe the unique dependence of carrier mobility on carrier concentration in AOSs, showing that R-ON,sp is proportional to BV4. Additionally, the use of a heavily doped drift region under a two-dimensional condition, such as reduced surface field (RESURF) condition, can resolve the issue of mobility degradation.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Biotechnology & Applied Microbiology
Tao Wang, Lu-Yu Zhou, Xin-Min Li, Fang Liu, Lin Liang, Xin-Zhe Chen, Jie Ju, Murugavel Ponnusamy, Kai Wang, Cui-Yun Liu, Kao-Wen Yan, Kun Wang
Summary: The role of ABRO1 in cardiomyocyte proliferation and myocardial regeneration is explored in this study. It is found that ABRO1 regulates cardiomyocyte proliferation by targeting METTL3-mediated m6A methylation of Psph mRNA. ABRO1 deletion increases cardiomyocyte proliferation and restores heart function, while ABRO1 overexpression inhibits neonatal cardiomyocyte proliferation and cardiac regeneration. The mechanism involves METTL3-mediated Psph mRNA methylation and CDK2 phosphorylation.
Article
Nanoscience & Nanotechnology
Chuanxiao Xiao, Yaxin Zhai, Zhaoning Song, Kang Wang, Changlei Wang, Chun-Sheng Jiang, Matthew C. Beard, Yanfa Yan, Mowafak Al-Jassim
Summary: By using Kelvin probe force microscopy and transient reflection spectroscopy techniques, we spatially resolved the variation in microscopic optoelectronic properties of perovskite hetero-junctions in metal-halide PSCs during operation and studied the light-soaking effect. The evolution of the junction was attributed to ion migration and self-poling induced by built-in voltage. The device performances were correlated with the changes in electrostatic potential distribution and interfacial carrier dynamics. Our results present a new route for studying the complex operation mechanism in PSCs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yi Sun, Kuanxin Zhang, Run Chai, Yueda Wang, Xianhong Rui, Kang Wang, Huaxia Deng, Hongfa Xiang
Summary: A novel strategy is proposed to construct an artificial hybrid solid electrolyte interface (SEI) layer on a prelithiated SiOx anode, using a spontaneous chemical reaction with SbF3. The preformed artificial SEI layer improves initial Coulombic efficiency and enhances capacity retention and rate capability for modified SiOx. Furthermore, a full cell using a pre-treated anode demonstrates high initial Coulombic efficiency and capacity retention after 100 cycles. This study provides valuable insights into obtaining stable interfaces for high-energy lithium-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ting Zhang, Xue Yong, Jingkun Yu, Yixuan Wang, Min Wu, Qing Yang, Xuyuan Hou, Zhaodong Liu, Kai Wang, Xinyi Yang, Siyu Lu, Bo Zou
Summary: The pressure-induced emission (PIE) phenomenon, which triggers photoluminescence (PL) in nonemission materials, is reported for the first time. It is found that pressure treatment can activate the PL performance of materials by increasing the rotational barrier of the linker. This discovery offers a new approach and platform for the development of high-performance PL materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jing Fang, Zhiyuan Fu, Xiaohong Chen, Yaozu Liu, Fengqian Chen, Yujie Wang, Hui Li, Yusran Yusran, Kai Wang, Valentin Valtchev, Shilun Qiu, Bo Zou, Qianrong Fang
Summary: Two dynamic three-dimensional covalent organic frameworks (COFs), JUC-635 and JUC-636, based on aggregation-induced emission (AIE) or aggregation-caused quenching (ACQ) chromophores, were reported. JUC-635 showed sustained fluorescence and reversible sensitivity upon pressure increase, with high-contrast emission differences. This study expands the potential applications of COFs as exceptional piezochromic materials in pressure sensing, barcoding, and signal switching.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jing Yang, Juan Wang, Wenjing Zhao, Guohong Wang, Kai Wang, Xinhe Wu, Jinmao Li
Summary: Improving sunlight absorption and charge separation efficiency is crucial for TiO2 photocatalysts to achieve efficient CO2 photoreduction. In this study, a novel 0D/1D Cu2-xS/ TiO2 S-scheme photocatalyst was developed using a facile solvothermal approach. The optimized Cu2-xS/TiO2 photocatalyst exhibited significantly enhanced CH4 production rate compared to pristine TiO2, attributed to the improved charge separation efficiency and reduction ability. The Cu2-xS/TiO2 photocatalyst also displayed enhanced light absorption and remarkable photothermal effect due to the surface plasmon resonance effect of Cu2-xS. Furthermore, the mechanism of CO2 photoreduction over the Cu2-xS/TiO2 photocatalyst was investigated. Thus, this Cu2-xS/TiO2 S-scheme photocatalyst with photothermal effect provides valuable insights for designing full-spectrum-responsive CO2 reduction photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Baofeng Zheng, Yanhua Song, Zhibo Zheng, Yanxia Zhao, Qing Yang, Zhan Shi, Bo Zou, Haifeng Zou
Summary: A novel green-light-emitting silicon-based oxynitride phosphor Ca4Y3Si7O15N5:Eu2+ with low thermal quenching and ideal pressure sensitivity is reported. The phosphor can efficiently emit green light when excited by 345 nm ultraviolet light and shows high thermal stability. It also exhibits a red shift with increasing pressure, making it suitable for optical pressure sensing applications.
INORGANIC CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Xiaolin Guan, Liyuan Zhang, Shoujun Lai, Jiaming Zhang, Jingyu Wei, Kang Wang, Wentao Zhang, Chenghao Li, Jinhui Tong, Ziqiang Lei
Summary: An eco-friendly method was developed to prepare non-toxic Cd-free glyco-quantum dots (glyco-QDs) in water by directly reacting thiol-ending monosaccharides with metal salts precursors. The resulted glyco-CuInS2 QDs were water-soluble, monodispersed, spherical in shape, and exhibited dual emission in the visible and near-infrared range. Cell imaging showed reversible dual-color fluorescence and excellent membrane-targeting properties of glyco-CuInS2 QDs. Furthermore, these QDs demonstrated the ability to penetrate and label tumors in three-dimensional multicellular tumor spheroids (MCTS). This research provides an effective, low-cost, and simple approach for developing green nanoparticles as fluorescent bioprobes.
JOURNAL OF NANOBIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Yang Yang, Lu Liu, Jianxun Li, Shuai Zhao, Zhen Chang, Le Wang, Dongqi Yu, Kai Wang, Shengzhong (Frank) Liu
Summary: In this work, we demonstrate an ambient aging process that appears to further improve the performance of wide-bandgap perovskite solar cells. The aging process induces secondary recrystallization and reduces defect density through air passivation and halogen redistribution. This leads to suppressed nonradiative recombination and prolonged carrier lifetime. The champion wide-bandgap perovskite solar cell achieved a power-conversion efficiency of 20.12% and a high open-circuit voltage of 1.27 V, making it one of the highest-performing wide-bandgap solar cells reported. This work reveals the impact of the air aging process on perovskite film properties and demonstrates a scalable post-treatment strategy for producing state-of-the-art semiconducting films.
Article
Chemistry, Physical
Yuanqin Li, Mingzhu Liu, Kang Wang, Chengfeng Li, Ying Lu, Aditya Choudhary, Taylor Ottley, Dmitry Bedrov, Lidan Xing, Weishan Li
Summary: A new single-component solvent dimethoxy(methyl)(3,3,3-trifluoropropyl) silane is proposed as an effective electrolyte for high-voltage Li-metal batteries. This electrolyte, when combined with 3 m LiFSI salt, can support the long-term cycle stability of limited-Li||high loading LiCoO2 cells at 4.6 V. Its outstanding performance is attributed to its unique solvation structures and its ability to build a stable and robust interphase on the surface of Li-metal anodes and high-voltage cathodes.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xing Su, Nan Li, Kai Wang, Qian Li, Weiguang Shao, Lulu Liu, Binhong Yu, Yu-Mo Zhang, Tingting Lin, Bo Zou, Yifei Liu, Sean Xiao-An Zhang
Summary: In this article, optical monitoring and diamond anvil cell (DAC) techniques are used to study the mechanochemistry of tetraphenylethene and pyrene modified cyano spiropyrans. The physical process of pressure induced emission enhancement (PIEE) properties and multi-step cascade reactions are revealed. The cis/trans tautomerization of spiropyran under hydrostatic pressure is observed and the ultra-unstable intermediates of merocyanine form are monitored. This research opens up new possibilities for the dynamic study of cleavage of covalent bonds in mechanochemistry.
MATERIALS CHEMISTRY FRONTIERS
(2023)
