Article
Chemistry, Multidisciplinary
Li Jun Lim, Xiaofei Zhao, Zhi-Kuang Tan
Summary: This work presents a facile synthesis method for near-infrared (NIR) emitting CuInS2/ZnS quantum dots (QDs). By using two sulfur precursors, 1-dodecanethiol (DDT) and hexamethyldisilathiane (HMDS), the reactive HMDS promotes faster nucleation and leads to a higher density of Cu-deficiency sites, resulting in QDs with high photoluminescence quantum efficiency (PLQE) of 65% at a long emission wavelength of 920 nm. NIR light-emitting diodes (LED) fabricated using these QDs achieve an external quantum efficiency (EQE) of 8.2%, comparable to the best reported PbS and InAs QD LEDs, and with an emission wavelength surpassing that of lead iodide perovskites. This work represents one of the first efficient NIR LEDs based on environmentally benign CuInS2 QDs, potentially enabling promising new applications in consumer electronic products.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Analytical
Shuangtian Dong, Dongyang Wang, Xuwen Gao, Li Fu, Jingna Jia, Yuqi Xu, Bin Zhang, Guizheng Zou
Summary: This study proposes a method to achieve chemiluminescence with different wavelengths and intensities by adjusting triggering agents, which shows promising potential for applications in immunoassays and other fields.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Mattia Salomone, Michele Re Fiorentin, Giancarlo Cicero, Francesca Risplendi
Summary: The study analyzes the stability and electronic properties of an InSe monolayer with point defects, showing the presence of deep defect states within the band gap. It predicts that Ge as a substitution impurity of Se could be a promising material for single-photon emitters due to its optical properties and strongly peaked spectrum in the near-infrared.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Analytical
Zhipeng Li, Xunxun Deng, Shuo Wu, Shuangtian Dong, Guizheng Zou
Summary: A near-infrared (NIR) aqueous chemiluminescence (CL) strategy using CuInS2@ZnS nanocrystals (CIS@ZnS NCs) was proposed, achieving efficient NIR CL and successfully applied in constructing biosensors, indicating its promising potential for bioassays.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Stijn O. M. Hinterding, Mark J. J. Mangnus, P. Tim Prins, Huygen J. Jobsis, Serena Busatto, Daniel Vanmaekelbergh, Celso de Mello Donega, Freddy T. Rabouw
Summary: The luminescence of CuInS2 quantum dots differs from many other types, with single core-only and core/shell CuInS2/CdS QDs exhibiting unique photophysical properties. These differences reflect the dipole moment of CuInS2's excited state and the preferred site of hole localization within the QD.
Article
Optics
Ning Liu, Xin Wang, Xia Wang, Xiao-San Ma, Mu-Tian Cheng
Summary: We theoretically investigate the scattering properties of single photons in a waveguide chirally coupled to a giant atom. When considering the energy loss of the giant atom, the transmission spectrum of a single photon depends on its incident direction. We calculate the difference in transmission probabilities for opposite transport directions, denoted as Delta T. It is found that the position and width of Delta T are both dependent on the size of the giant atom. Furthermore, the position and frequency width of the maximum Delta T can be modulated by a classical laser beam. Our findings are relevant for the control of single photons in the design of quantum devices involving giant atoms.
Article
Chemistry, Multidisciplinary
Meiyan Ye, Yan Li, Ruilian Tang, Siyu Liu, Shuailing Ma, Haozhe Liu, Qiang Tao, Bin Yang, Xin Wang, Huijuan Yue, Pinwen Zhu
Summary: The bandgap of wurtzite CuInS2 nanocrystals is successfully extended and the photocurrent is enhanced using external pressure. The pressure-induced bandgap extension may be attributed to an increased charge density and ionic polarization between the In-S atoms. However, a phase transformation results in a significant reduction in photocurrent.
Article
Chemistry, Analytical
Yun Shu, Linyan Sun, Yan Wang, Dangqin Jin, Qin Xu, Xiaoya Hu
Summary: Through the synergistic effects of polymer surface ligand and silica encapsulation, highly stable and enhanced aqueous fluorescent CsPbBr3-mPEG@SiO2 NCs were synthesized, serving as a novel on-off-on fluorescent probe for highly sensitive and selective detection of mercury ions and glutathione in aqueous solutions. The fluorescent probe exhibits low detection limits, fast response time, and high accuracy, showing great potential in environmental and biological sensing.
Review
Optics
Anir S. Sharbirin, Sophia Akhtar, Jeongyong Kim
Summary: MXene, an emerging class of 2D materials with high electronic conductivity and wide optical absorption range, has led to the development of light-emitting MQDs exhibiting improved light emission and QY. Research on the optical properties and PL emission mechanisms of these MQDs is still ongoing and requires further investigation.
OPTO-ELECTRONIC ADVANCES
(2021)
Article
Chemistry, Physical
Yuping Xu, Peisen Zhang, Shuming Jin, Chuang Liu, Lin Yang, Zhuo Ao, Meng Qin, Kaili Nie, Yi Hou, Mingyuan Gao
Summary: Plastic pollution is a significant issue that harms the ecosystem and human health. This study presents an innovative approach to optically track degraded microplastics using a model system composed of poly(L-lactic acid) and CuInS2@ZnS quantum dots. The results demonstrate that the microplastics are mainly absorbed by Gram-positive cocci.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Yan Li, Can Liu, Yulong An, Menglin Chen, Yunwu Zheng, Hao Tian, Rui Shi, Xiahong He, Xu Lin
Summary: Multicolor luminescent carbon dots were prepared by a solvothermal method using tannic acid and phthalaldehyde as carbon sources. The distinct optical features of these carbon dots are based on differences in the sizes of sp(2) domains, which can be governed by the structure of phthalaldehyde.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Sarojini Jeeva Panchu, Kumar Raju, Hendrik C. Swart, Bharatiraja Chokkalingam, Malik Maaza, Mohamed Henini, Mathew K. Moodley
Summary: Wide band gap luminescent MoS2 quantum dots (QDs) showed superior electrochemical performance in supercapacitors compared to MoS2 nanocrystals (NCs), with higher specific capacitance value and wider operating potential window.
Article
Chemistry, Physical
Bin Xu, Zifei Wang, Jian Shen, Jie Li, Yuehan Jia, Tianlong Jiang, Zhenhua Gao, Xue Wang, Xiangeng Meng
Summary: This study reports on the development of phosphorescent materials based on carbon dots (CDs) that can exhibit full-color and wide-range lifetime-tunable properties. These materials, activated by a metal-organic framework, show tunable emission wavelength and lifetime, making them potential candidates for encryption and information security applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Hailong Wu, Lijia Yao, Wenqian Cao, Yu Yang, Yuanjing Cui, Deren Yang, Guodong Qian
Summary: Lead-halide perovskite nanocrystals (PeNCs) have attractive optical properties, and a host-guest system was constructed by encapsulating PeNCs in a metal-organic framework (MOF) to adjust their properties and enhance their stability and tunability.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Zizhao Fu, Hanxu Lu, Hong Liu, Yifeng Xing, Zhiyan Piao, Hanqing Dai, Wanlu Zhang, Ruiqian Guo
Summary: Due to their unique optical properties, I-III-VI alloyed quantum dots (QDs) have attracted significant attention. In this study, CuZnGaSSe (CZGSSe) QDs were synthesized using a one-pot method and the photoluminescence quantum yield reached 72.2%. The effects of capping ligands, halogen ions, and reaction temperatures were explored, and the growth mechanism of the CZGSSe QDs was discussed. By adjusting the synthesis ratios, the prepared QDs exhibited tunable emission wavelengths. This study is significant for researching the growth sequence and guiding the synthesis of efficient quintuple QDs.
APPLIED MATERIALS TODAY
(2023)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
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
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.