Article
Materials Science, Ceramics
Alisher Farmonovih Ishankulov, Kadriddin Fakhriddinovich Khalilov, Radik Rashidovich Shamilov, Yuriy Genadievich Galyametdinov, Nurali Kurbonaliyevich Mukhamadiev
Summary: CdSe quantum dots stabilized with oleic acid were synthesized by the colloidal method. By growing a ZnS shell onto the CdSe nanoparticles, CdSe/ZnS core-shell hybrids were obtained with increased luminescence yield. Ligand exchange reactions were carried out, replacing the stabilizer with thiol molecules, leading to a change in the optical properties and a decrease in luminescence intensity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Mohammad Mominur Rahman, Mohammad Rezaul Karim, Hamad F. Alharbi, Belal Aldokhayel, Tauriq Uzzaman, Hasan Zahir
Summary: Quantum dot-sensitized solar cells are important energy-producing devices with potential for higher efficiency, but face challenges due to narrow absorption areas and charge recombination, requiring new electrodes, sensitizers, and electrolytes for improvement.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jinming Zhu, Zhaopeng Cao, Yongcheng Zhu, Nelson Rowell, Yan Li, Shanling Wang, Chunchun Zhang, Gang Jiang, Meng Zhang, Jianrong Zeng, Kui Yu
Summary: This study provides a detailed description of the transformation pathway of CdSe nanospecies from one absorption doublet to another, as well as the role of precursor compounds in enabling this transformation. The research also sheds light on the structural nature and evolutionary behavior of these nanospecies with sharp doublets in optical absorption.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Spectroscopy
Zhenping Liu, Jun Zhou, Xianfeng Wang, Jinsong Zhao, Peng Zhao, Yi Ma, Suyi Zhang, Danqun Huo, Changjun Hou, Kang Ren
Summary: In this work, a novel aptasensor based on the fluorescence quenching property of graphene oxide (GO) and the fluorescence characteristic of cadmium selenide quantum dots (CdSe QDs) was developed for highly sensitive detection of fluoroquinolones contamination. The aptasensor showed reliable detection performance and promising potential for the detection of fluoroquinolones.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Chemistry, Multidisciplinary
Li Tang, Along Ma, Cheng Zhang, Xuguang Liu, Rongchao Jin, Shuxin Wang
Summary: This study successfully reported the complete structure of a [Au42Cd40(SR)52](2-) core-shell nanocluster, revealing its composition and the way it is protected, and demonstrated the surface effect on catalytic activity and selectivity through catalytic tests and comparative studies with relevant nanoclusters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Arun Ashokan, Jiho Han, James A. Hutchison, Paul Mulvaney
Summary: We report an unexpected enhancement of photoluminescence (PL) in CdSe-based core/shell nanoplatelets (NPLs) upon electrochemical hole injection. Moderate hole doping densities induce an enhancement of more than 50% in PL intensity, accompanied by a narrowing and blue-shift of the PL spectrum. The hole-induced PL brightening in NPLs contrasts with the typical observation of PL quenching in CdSe-based quantum dots following hole injection. We propose that hole injection removes surface traps responsible for negative trions formation, thereby blocking nonradiative Auger processes. Continuous photoexcitation causes the enhanced PL intensity to decrease back to its initial level, indicating that photocharging is a key step in the loss of PL luminescence during normal aging. Modulation of the potential can be used for reversible enhancement or quenching of PL, enabling electro-optical switching.
Article
Chemistry, Multidisciplinary
Sanna Wickerts, Rickard Arvidsson, Bjorn A. Sanden, Gregory Peters, Lili Hou, Bo Albinsson
Summary: The study provides ready-to-use LCA unit process data for four NPs suitable for photon upconversion applications, and conducts an impact assessment. The research investigates whether it is preferable from a climate perspective to install more solar modules or equip existing ones with upconversion devices.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Walter Giurlani, Martina Vizza, Antonio Alessio Leonardi, Maria Jose Lo Faro, Alessia Irrera, Massimo Innocenti
Summary: This work demonstrates the optimal conditions for electrodeposition of a CdSe film on n-Si and studies the structural and optical properties of the films before and after annealing. Significant enhancement of photoluminescence is observed after annealing, opening up possibilities for integrating other materials in silicon manufacturing processes for optoelectronic device fabrication.
Article
Chemistry, Multidisciplinary
David B. Berkinsky, Andrew H. Proppe, Hendrik Utzat, Chantalle J. Krajewska, Weiwei Sun, Tara Sverko, Jason J. Yoo, Heejae Chung, Yu-Ho Won, Eunjoo Jang, Moungi G. Bawendi
Summary: Red-emitting InP/ZnSe/ZnS quantum dots (QDs) have narrower line widths than typically synthesized CdSe QDs, making them suitable for high color purity displays. Our analysis reveals that at low temperatures, phonon scattering and fine-structure splitting are the main broadening mechanisms, while at elevated temperatures, phonon scattering dominates and optical scattering plays a minor role in line broadening. These findings can inform the rational design of QD materials with narrower line widths.
Article
Chemistry, Physical
Sohel Das, Prathap Somu, Subhankar Paul
Summary: This study investigated the degradation of the azo dye Congo red (CR) under sunlight using a nanoconjugate of graphene oxide (nGO) and CdSe quantum dots (QD) as a nano-photocatalyst. The synthesized catalyst showed high efficiency at pH 7.0 and a degradation efficiency of over 90% within 60 minutes for 20 ppm and 100 ppm dye concentrations. The nanoconjugate exhibited high reusability and non-toxicity of photo-degraded by-products, making it a promising nano material for rapid degradation of CR dye.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Aliaksandra Radchanka, Varvara Hrybouskaya, Andrey Iodchik, Alexander W. Achtstein, Mikhail Artemyev
Summary: In this study, the researchers found that by varying the surface charged groups on CdSe/ZnS QDs, the zeta-potential can be tuned to control the quantum yield of emission and the recombination dynamics. The presence of zwitterionic surface groups allows for pH tuning of the zeta-potential and quantum yield.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Guo Li, Changxue Dong, Genshuai Sun, Mingzhe Li, Xin Cao, Li Zhou, Tao Chen, Fan Yang
Summary: This study shows that Ag doping can regulate the energy band structure of CdSe nanosheets, leading to improved efficiency in the photocatalytic reduction of uranium.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Juan Shen, Chaoran Luan, Nelson Rowell, Yang Li, Meng Zhang, Xiaoqin Chen, Kui Yu
Summary: This article discusses the research on promoting the selective production of colloidal semiconductor metal chalcogenide (ME), magic-size clusters (MSCs), or quantum dots (QDs). The study reveals that the size of precursors determines the evolution pathways of MSCs and QDs. The addition of carboxylic acid can regulate the self-assembly behavior of the precursors, leading to directed evolution of either MSCs or QDs.
Article
Chemistry, Analytical
Tian-Yang Lin, Zong-Juan Lian, Cai-Xia Yao, Qing-Qing Du, Sheng-Hua Liao, Sheng-Mei Wu
Summary: CdSe quantum dots were rapidly biosynthesized in Bacillus licheniformis ATCC 11946 (B. licheniformis) within 18 hours, benefiting from the bacterial metal metabolism machinery. The purified CdSe QDs showed maximum fluorescence intensities in weak alkalinity solutions and good fluorescence stabilities at different temperatures. Bacterial resistance research indicated a relative lower environmental risk in short-term heavy metal exposure after the use of B. licheniformis to manufacture CdSe QDs, with bacterial inhibition zone diameter changes to seven different antibiotics being less than 9%.
Article
Chemistry, Physical
Sk. Taheruddin Ahamed, Chiranjit Kulsi, Kirti, Dipali Banerjee, Divesh Narayan Srivastava, Anup Mondal
Summary: This paper describes the galvanic synthesis of CdSe thin films on FTO coated glass substrates and their characterization for various applications such as wastewater treatment, Oxygen Evolution Reaction (OER), and thermoelectric materials. The study involved XRD, FESEM, TEM, XPS, UV-Vis spectroscopy, and electrochemical measurements to evaluate the properties and potential of the CdSe films.
SURFACES AND INTERFACES
(2021)
Article
Biophysics
Chan Song, Wei Ding, Weiwen Zhao, Haibo Liu, Jie Wang, Yuewei Yao, Cheng Yao
BIOSENSORS & BIOELECTRONICS
(2020)
Article
Chemistry, Physical
Calynn Morrison, Haochen Sun, Yuewei Yao, Richard A. Loomis, William E. Buhro
CHEMISTRY OF MATERIALS
(2020)
Article
Chemistry, Physical
Chenguang Ji, William E. Buhro
CHEMISTRY OF MATERIALS
(2020)
Article
Chemistry, Physical
William M. Sanderson, Jessica Hoy, Calynn Morrison, Fudong Wang, Yuanyuan Wang, Paul J. Morrison, William E. Buhro, Richard A. Loomis
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Chemistry, Physical
Haochen Sun, William E. Buhro
CHEMISTRY OF MATERIALS
(2020)
Article
Chemistry, Physical
William M. Sanderson, Fudong Wang, Joshua Schrier, William E. Buhro, Richard A. Loomis
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Chemistry, Physical
Yang Zhou, Fudong Wang, William E. Buhro
CHEMISTRY OF MATERIALS
(2020)
Article
Chemistry, Physical
Haochen Sun, William E. Buhro
Summary: The ligand-exchange chemistries of wurtzite (WZ) and zinc-blende (ZB) CdTe nanoplatelets exhibit contrasting behaviors, which are consistent with their facet structures. WZ nanoplatelets prefer nonpolar facets and neutral ligation, while ZB nanoplatelets prefer polar, cationic facets and anionic ligation.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Hailey M. Meyer, Calynn E. Morrison, Richard A. Loomis, William E. Buhro
Summary: This study successfully exchanged different metal dithiocarbamate ligands with CdSe quantum belts, and it was found that these ligands bind to the quantum belt surfaces as X-type ligands through coordination, without imparting any special electronic effects to the quantum belts.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
William E. Buhro, Chenguang Ji
Summary: Two-phase ligand exchange can convert the amine-ligated nanoplatelets to NMF-ligated ones, and further ligand exchange can lead to halometallate-ligated CdSe nanoplatelets. Analysis of the absorption spectra and X-ray diffraction data confirms the intact, Z-type binding of the halometallates.
CHEMISTRY OF MATERIALS
(2022)
Review
Psychology, Multidisciplinary
Xiang Zhou, Chen Chen, Yuewei Yao, Jingtian Xia, Limei Cao, Xin Qin
Summary: This review provides a systematic overview of COVID-19-related stigma and identifies Chinese/Asian people, (suspected) patients and survivors, and healthcare workers as the most researched targets. The study finds that characteristics of the stigmatized, stigmatizer, and context contribute to COVID-19-related stigma, which negatively impacts victims' health and non-health outcomes. Future research should focus on neglected topics, conduct stigma interventions, and use longitudinal designs.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Chemistry, Physical
Hailey M. Meyer, Jie Chen, Richard A. Loomis, William E. Buhro
Summary: This study investigates the ligand-exchange reactions of wurtzite CdSe quantum platelets and quantum belts with methyl viologen and its derivative ligands. It is found that the photoluminescence of the quantum platelets and quantum belts is quenched after partial ligand exchange. The ligand substitution occurs mainly on the thin edges of the platelets and belts. The derivative ligands MV2+(CH2)nNH(2) are more efficient in quenching the photoluminescence compared to the parent MV2+ ion. Furthermore, electron transfer to the derivative ligands only occurs at the polar facets of the CdSe platelets and belts.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Biomaterials
Chan Song, Weiwen Zhao, Haibo Liu, Wei Ding, Linlin Zhang, Jie Wang, Yuewei Yao, Cheng Yao
JOURNAL OF MATERIALS CHEMISTRY B
(2020)
