Article
Chemistry, Physical
Huibo Wang, Mengling Zhang, Kaiqiang Wei, Yajie Zhao, Haodong Nie, Yurong Ma, Yunjie Zhou, Hui Huang, Yang Liu, Mingwang Shao, Zhenhui Kang
Summary: Nitrogen-doped carbon dots (TA-NCDs) synthesized via hydrothermal method exhibit oxidase-like activity under visible light irradiation, with the potential to induce bioactivity in killing cells.
Article
Materials Science, Multidisciplinary
Nadia Nabihah Mohd Yusof Chan, Azila Idris, Zul Hazrin Zainal Abidin, Hairul Anuar Tajuddin, Zanariah Abdullah
Summary: This study investigated the photophysical and photochemical properties of a series of furocoumarins, revealing their sensitivity to solvent polarity, intermolecular interactions, and substituent effects. The experimental and theoretical results suggest the potential use of furocoumarins in nonlinear optics applications, highlighting their solvatochromic effects and fluorescence quenching mechanisms.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Mohamed H. A. Soliman, Sahar S. El-Sakka, Asmaa S. Fathy, Rasha M. Kamel
Summary: A new class of 5-aryl-3-((E)-3-phenylallylidene)-2(3H)-furanones (3a-f) derivatives was synthesized and characterized. The absorption and emission spectra of the compounds were studied in ten solvents with different polarities. The emission spectra showed a consistent shape with a significant red shift as solvent polarity increased. The quantum yield decreased over 20-fold from toluene to water due to the formation of hydrogen bonds with protic solvents.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Analytical
Qingqing Xu, Jiurong Li, Xiao Gong
Summary: In this study, novel red fluorescent CDs with dual emission were synthesized and a multifunctional fluorescent nanoprobe based on these CDs was successfully constructed. The nanoprobe exhibited high sensitivity for dual-ion trace detection of Fe3+ and Cu2+. Additionally, the CDs could be used for trace detection of ethanol content in aqueous solution.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Physical
Parisa Mohammad-Jafarieh, Rahman Salamat-Ahangari, Mohammad Pourhassan-Moghaddam, Abolfazl Akbarzadeh
Summary: In this study, carbon dots were synthesized inexpensively from persimmon peel biowaste, characterized and found to possess excellent optical properties and dispersibility. The carbon dots can serve as a nanoprobe for medium polarity and a fluorescent chemical sensing platform for metal ions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Dario Dabic, Marko Hanzevacki, Irena Skoric, Bojana Zegura, Klaudija Ivankovic, Martina Biosic, Kristina Tolic, Sandra Babic
Summary: Metoclopramide, a pharmaceutical compound, was studied for its photolysis and toxicological assessment in this research. The experiments showed that metoclopramide can easily degrade in different water matrices, with faster degradation at pH = 7. Various organic and inorganic substances present in natural water were found to inhibit the degradation process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Bihai Cai, Junhui Zhou, Didi Li, Zhimin Ao
Summary: In this work, the original single-atom catalyst Ti/V2CO2 is employed for CO catalytic oxidation due to its high efficiency and low cost. The effects of H2O on the performance and mechanisms of CO catalytic oxidation are explored using density functional theory (DFT) calculations. It is found that the presence of water can significantly enhance the catalytic activity of Ti/V2CO2, reducing the energy barrier of the rate-limiting step.
APPLIED SURFACE SCIENCE
(2023)
Article
Electrochemistry
Yuan Zhou, Hongcheng Gao, Shunlian Ning, Jiaju Lin, Jingbo Wen, Xiongwu Kang
Summary: The developed multi-functional composite interlayer with PPy/G shows promising performance in high-capacity, high-rate, and long cycling lithium-sulfur batteries, especially under lean electrolyte conditions. The composite interlayer effectively traps polysulfides and promotes their redox kinetics, while also facilitating the homogeneous flux of Li+ ions and inhibiting Li dendrite growth on the Li metal anode.
Article
Spectroscopy
R. G. S. Sofin, A. Issac, M. R. S. Al-Naabi, M. T. Zar Myint, H. Htet Kyaw, Osama K. Abou-Zied
Summary: Carbon nanoparticles (CNPs) are gaining attention for their fluorescence and low toxicity, and researchers have reported the fluorescent emission characteristics of carbon films formed by the aggregation of CNPs for the first time. A qualitative model based on solvatochromism of CNPs was used to understand the emission pathways in the film, through a detailed comparative study of emission spectra in various solvents.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Reshmi Thekke Parayil, Santosh K. Gupta, Brindaban Modak, G. D. Patra, N. S. Rawat, M. Mohapatra
Summary: In this study, the researchers focused on improving the efficiency of white light emitting diodes (LEDs) by designing efficient red emitting luminophores. By utilizing the favorable properties of Y2Zr2O7 (YZO) pyrochlore and Eu3+ as a dopant ion, they were able to achieve a significant increase in the photoluminescence quantum yield (PLQY) of the LEDs.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Optics
Junxin Chen, Xiaofen Xu, Yuqiu Ma, Haijun Qin, Jun Liu, Fengzhen Lv, Changming Zhu, Liguang Wang, Lizhen Long, Fuchi Liu, Yong Yang, Wenjie Kong
Summary: The study successfully synthesized nitrogen-doped graphene oxide quantum dots (NGOQDs) using a hydrothermal method, and investigated their optical properties and microstructures. The NGOQDs showed tunable photoluminescence and exhibited a larger blue-shift compared to graphene oxide quantum dots. The observed blue-shift in NGOQDs was attributed to the higher content of pyridine-like and pyrrolic-like nitrogen atoms doping, supported by density functional theory calculations.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Yuanyuan Zhang, Yue Li, Yuan Yuan
Summary: Efficient photocatalysis is essential for degrading antibiotic pollutants in water. This study presents a carbon quantum dot (CQD)-modified hybrid material for improved photocatalytic activity. A visible-light-driven micromotor based on this photocatalyst is also developed, enabling self-propelled motion through the photocatalytic degradation reaction.
Article
Engineering, Environmental
Sida Rong, Liqiang Zhang, Ziyi Yue, Zhanlong Song, Wenjing Tang, Xiao Zhu, Tao Wang, Xiaohan Zhou, Shanjie Cheng, Xiao Xia
Summary: This study combined experiments and theoretical calculations to achieve targeted modification of pyridine nitrogen, improving the decomposition efficiency of hydrogen iodide. The calculated results show that the pyridine nitrogen substitution models can reduce the activation energy of the hydrogen iodide decomposition reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sahar Salarieh, Hamid Golchoubian, Golasa Moayyedi, Ehsan Rezaee
Summary: This study presents an experimental and computational investigation of a ligand and its mixed chelate copper(II) complexes, focusing on their properties and solvatochromic behavior. The experimental characterization revealed the effect of ligand protonation and solvent coordination on the structure and color of the complexes. The computational results provided further support for the proposed solvatochromic mechanism.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Biochemistry & Molecular Biology
Edison Rafael Jimenez, Manuel Caetano, Nelson Santiago, F. Javier Torres, Thibault Terencio, Hortensia Rodriguez
Summary: DADQs have interesting fluorescence properties, with some showing quantum yields up to 90%; theoretical study on three diaminodicyanoquinodimethane systems revealed significant luminescent properties in two of them; experimental measurements confirmed photoluminescence and suggested potential antibacterial activity of these systems.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Engineering, Environmental
Siqi Sun, Min Lu, Jie Guo, Fujun Zhang, Po Lu, Yuhao Fu, Xue Bai, Zhifeng Shi, Zhennan Wu, William W. Yu, Yu Zhang
Summary: This study successfully transformed nonluminescent Cs4PbBr6 nanocrystals into highly luminescent Zn-doped CsPbBr3/Cs4PbBr6 nanocrystals through an insertion reaction, resulting in improved photoluminescence quantum yield. These nanocrystals were used as emitters in LED devices, achieving high performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Zedong He, Lei Feng, Ju Xie, Hailong Liu, William W. Yu, Jie Zhang
Summary: Chemical reactivity in a system combining organic and silicon compounds shows new traits. This study investigates the kinetics of melt transesterification of dimethyl terephthalate (DMT) with a siloxane diol called 1,3-bis(3-hydroxy-propyl)-1,1,3,3-tetramethyldisiloxane (HP-TMDS), and fits the reaction mechanism obtained from quantum-chemistry calculation. The results reveal that the siloxane diol changes the reaction process and gives the transesterification a unique feature with advantages in kinetics for cyclic dimer and limited compatibility between reactant and catalyst. A solution is proposed for the limited compatibility issue, which can be applied to similar systems. The distinct advantage in kinetics for cyclic dimer brings a special characteristic to the product composition, providing a more flexible and effective way to prepare silicon-containing polyesters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Xinyu Shen, Zhenyu Wang, Chengyuan Tang, Xiangtong Zhang, Bo Ram Lee, Xin Li, Daguang Li, Yu Zhang, Junhua Hu, Dan Zhao, Fujun Zhang, William W. Yu, Bin Dong, Xue Bai
Summary: This study demonstrates the achievement of electroactivated near-infrared light-emitting diodes (LEDs) based on Yb3+-doped CsPb(Cl1-xBrx)3 perovskite nanocrystals (PNCs), with emission peaks over 800 nm. These NIR LEDs exhibit extraordinary high near-infrared photoluminescence quantum yields over 170%. The main mechanism of electroluminescence (EL)-activated Yb3+ is revealed to be the ultrafast quantum cutting process from the PNC host.
Article
Chemistry, Multidisciplinary
Xin Li, Xinyu Shen, Min Lu, Jinlei Wu, Yuan Zhong, Zhennan Wu, William W. Yu, Yanbo Gao, Junhua Hu, Jinyang Zhu, Yu Zhang, Xue Bai
Summary: This research reports the development of wide-coverage near infrared (NIR) phosphor-converted LEDs using lanthanide ions doped Cs2M(In0.95Sb0.05)Cl-6 nanocrystals (NCs), which exhibit high photoluminescence quantum yield and can be used in multiplex gas sensing and night-vision applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Feifei Zhao, Bin Wang, Wu Zhang, Sheng Cao, Linhua Liu, Abdulhakem Y. Elezzabi, Haizeng Li, William W. Yu
Summary: This review focuses on the integration of electrochromism and energy storage functionalities within a single device. The contradictory nature of these functions in conventional electrochromic devices is discussed. The current status, applications and future trends of electrochromic energy storage devices (EESDs) are reviewed. Additionally, a design strategy using zinc anodes for overcoming the contradiction between electrochromism and energy storage is proposed.
Article
Optics
Chunxiao Zhu, Jianqiao Gao, Min Lu, Yu Zhang, Zhenyu Wang, Qizhang Huang, Zhennan Wu, Yanbo Gao, YanPing Wang, William W. Yu, Junhua Hu, Xue Bai
Summary: This paper proposes a driver safety assisting system that reduces the driver's fatigue degree by using different wavelengths of light. An algorithm is designed to quantify the degree of fatigue and adjust the lighting accordingly. Experimental results show that the system effectively prolongs awake driving time and reduces fatigue during driving.
Article
Chemistry, Multidisciplinary
Yue Liu, Yanbo Gao, Xinyu Bao, Fujun Zhang, Zehua Xu, Junhua Hu, Zhifeng Shi, Min Lu, Zhennan Wu, Yu Zhang, Dingdi Wang, William W. Yu, Xue Bai
Summary: A multifunctional magnetic field-assisted interfacial embedding strategy is developed to construct a 2D/3D composite structure, which improves the performance and stability of perovskite solar cells.
Article
Chemistry, Physical
Po Lu, Min Lu, Fujun Zhang, Feisong Qin, Siqi Sun, Yu Zhang, William W. Yu, Xue Bai
Summary: A color-stable pure-red perovskite LED with low operating voltage and high luminance was achieved by optimizing the device structure and using chemical treatment methods.
Article
Chemistry, Multidisciplinary
Xin Li, Dingdi Wang, Yuan Zhong, Feng Jiang, Deqiang Zhao, Siqi Sun, Po Lu, Min Lu, Zhenyu Wang, Zhennan Wu, Yanbo Gao, Yu Zhang, William W. W. Yu, Xue Bai
Summary: In this study, efficient blue-emitting Sb3+-doped Cs2NaInCl6 nanocrystals (NCs) were selected as the host, and rare-earth (RE) ions (Sm3+, Eu3+, Tb3+, and Dy3+) were incorporated into the host, achieving an excellent PLQY of 80.1%. Femtosecond transient absorption measurement revealed that RE ions served as activator ions and filled deep vacancy defects. These RE ions-doped halide double perovskite NCs exhibited applications in anti-counterfeiting, optical thermometry, and white-light-emitting diodes (WLEDs).
Article
Chemistry, Physical
Hairan Zhang, Duo Zhang, William W. Yu, Qin Wang
Summary: Amphiphilic Janus nanosheets with an asymmetric structure were used as a carrier to integrate a catalyst and an emulsifier. Catalytic heteropolyanions were selectively decorated on the polar side of the nanosheets, forming Janus catalysts. The decolorization process of dyes performed in the emulsified system, resulting in significantly improved catalytic degradation performance. Compared to a conventional immiscible system, the removal efficiency of the dye greatly improved in the Janus emulsion. Furthermore, the Janus emulsion could be easily demulsified and maintained a high degradation efficiency after multiple cycles.
APPLIED SURFACE SCIENCE
(2023)
Article
Polymer Science
Jinlong Fan, Xiaohan Liang, William W. Yu, Dangwei Fu, Yanyan Yu, Hailong Liu, Jie Zhang
Summary: Partial crystalline polysiloxane-based polyurethane copolymers were synthesized using polydimethylsiloxane and disiloxane. The copolymers exhibited good tensile properties and multiple shape deformation. Tensile tests showed that stretching resulted in crystal destruction, but the microstructure became stable after twice stretching. Moreover, the lost crystallinity could be partially recovered through heat treatment.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Physics, Applied
Ran Bi, Chuantao Zheng, William W. Yu, Weitao Zheng, Dingdi Wang
Summary: Research has found that ultrathin ITO films can remain transparent in the infrared region beyond the visible spectrum, while also having good resistivity and infrared transmittance. This discovery opens up possibilities for thermal management of circuits, as using these films can prevent temperature rise. Additionally, attaching a silver grid can lower the sheet resistance, further expanding the applications of this film.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Qiang Bai, Kesi Xiong, Chaohui Zhang, Lina Wang, Wenhao Han, Qianqian Zhu, Fanglin Du, William W. Yu, Ning Sui
Summary: A metal-free boron-doped graphdiyne quantum dot (BGDs) modified hollow tubular g-C3N4 photocatalyst (BGD/TCN) was synthesized to activate per-oxymonosulfate (PMS) and achieve effective carrier separation for degradation of bisphenol A. The degradation rate of bisphenol A (20 ppm) with 0.5 mM PMS was 0.0634 min-1, 3.7 times higher than TCN alone. The roles of BGDs in electron distribution and photocatalytic properties were identified through experiments and density functional theory (DFT) calculations. The possible degradation intermediates of bisphenol A were monitored and confirmed to be non-toxic. This newly-designed material was successfully applied in actual water bodies, showing promising prospects for water remediation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tian-Xiang Luan, Jia-Rui Wang, Keyu Li, Hailian Li, Fuchun Nan, William W. Yu, Pei-Zhou Li
Summary: By embedding metal ions into a robust photosensitive covalent organic framework, effective photocatalysts for CO2 conversion are designed and constructed. The metallized COFs show significantly enhanced photochemical properties, with the Co-metallized COF achieving a high CO production rate and selectivity, and the Ni-metallized COF tandem catalyzing the generated CO to CH4. The remarkable performance enhancement is attributed to the incorporated metal sites in the COF skeleton, promoting CO2 adsorption and activation, CO desorption, and reducing the reaction energy barrier for intermediate formation.
Article
Nanoscience & Nanotechnology
Zhaoyang Song, Bin Wang, Wu Zhang, Qianqian Zhu, Abdulhakem Y. Elezzabi, Linhua Liu, William W. Yu, Haizeng Li
Summary: This study developed novel strategies to design electrochemically stable vanadates with rapid switching times. By introducing sodium and lanthanum ions, the interlayer spacing was significantly broadened, facilitating cation transportation and enhancing electrochemical kinetics. Additionally, a hybrid Zn2+/Na+ electrolyte was designed to inhibit vanadate dissolution and accelerate electrochemical kinetics. Our electrochromic displays demonstrated the fastest switching times compared to any reported Zn-vanadate electrochromic displays. It is expected that stable vanadate-based electrochromic displays with video speed switching will emerge in the near future.
NANO-MICRO LETTERS
(2023)