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Huo X, Xie Y, Wang X, Zhang L, Yang M. Reduction reactions at the interface between CdS quantum dot and Z-type ligands driven by electron injection in the electroluminescent processes. J Chem Phys 2024; 161:024304. [PMID: 38984958 DOI: 10.1063/5.0196243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 06/24/2024] [Indexed: 07/11/2024] Open
Abstract
The efficient and stable electroluminescence of quantum dots (QDs) is of great importance in their applications in new display technologies. The short service life of blue QDs, however, hinders their development and commercialization. Different mechanisms have been proposed for the destabilization of QDs in electroluminescent processes. Based on real-time time-dependent density functional theory studies on the QD models covered by Z-type ligands (XAc2, X = Cd, Zn, Mg), the structural evolution is simulated to reveal the mechanism of the reduction reactions induced by electron injection. Our simulations reproduce the experimental observations that the reduction reactions occur at the QD-ligand interface, and the reduced Cd atom is almost in a zero valence state. However, different sites are predicted for the reactions in which the surface metal atom of the QD instead of the metal atom in the ligands is reduced. As a result, one of the arms of the chelate ligand leaves the QD, which tends to cause damage to its electroluminescent performance. Our findings contribute to a mechanistic understanding of the reduction reactions that occurred at the QD-ligand interface.
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Affiliation(s)
- Xiangyu Huo
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Yujuan Xie
- School of Science, Westlake University, Hangzhou 310030, China
| | - Xian Wang
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Li Zhang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Mingli Yang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
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Gassoumi B, Dlala NA, Echabaane M, Karayel A, Özkınalı S, Castro M, Melendez F, Ghalla H, Nouar L, Madi F, Chaabane RB. Stability, spectroscopic, electrochemistry and QTAIM analysis of Cu-Zn n-1O n clusters for glucose sensing application: A study on theoretical and experimental insights. Heliyon 2022; 8:e12387. [PMID: 36582723 PMCID: PMC9793285 DOI: 10.1016/j.heliyon.2022.e12387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/17/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Clusters of (ZnO)n (n = 2-4) have been shown to play a central role in the detection of glucose entity based on the existence of photo-induced electrons (PE), which facilitates the interaction between (ZnO)n clusters and glucose entity guests. The electrochemistry experiment has confirmed the detection of glucose by the title clusters. The optimization, energetic parameters, and vibrational frequency calculations have indicated that the Cu-Znn-1On-glucose are more stable than the (ZnO)n-glucose complexes. It has been demonstrated that the Cu doping enhanced the chemical behavior of the clusters and formed a high intramolecular charge transfer (ICT) in the system. The glucose sensing by all the forms of Cu-Znn-1On clusters showed that the Cu-Zn3O4, Cu-Wurtzite, and Cu-Rocksalt clusters are the most suitable for adsorbing the glucose guest. The HOMO/LUMO iso-surfaces of the complexes showed that the electron concentrations are localized in the d orbitals and mainly in the form of the d10 orbitals around Zn atoms. The molecular electrostatic potential (MEP) has clearly indicated that a high charge transfer occurs between the copper and the oxygen atoms, which facilitate the adsorption of glucose. The reactivity parameters also indicated that the Wurtzite-glucose complex has a high electrophilicity index (ω), which means a good acceptor behavior to interact with glucose. Additionally, the bond between the (ZnO)n clusters and the glucose polar element has been studied in detail by using QTAIM theory. Finally, the theoretical and experimental studies prove that the Cu-Znn-1On clusters are very suitable and competent compounds for detecting glucose.
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Affiliation(s)
- B. Gassoumi
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Science of Monastir, Avenue of Environment, 5000 Monastir, Tunisia
- Corresponding author.
| | - N. Aouled Dlala
- Quantum and Statistical Physics Laboratory, Faculty of Sciences, University of Monastir, 5079 Monastir, Tunisia
| | - M. Echabaane
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Science of Monastir, Avenue of Environment, 5000 Monastir, Tunisia
- NANOMISENE Lab, LR16CRMN01, Centre for Research on Microelectronics and Nanotechnology CRMN of Technopark of Sousse, B.P. 334, Sahloul, 4034 Sousse, Tunisia
| | - A. Karayel
- Department of Physics, Faculty of Arts and Sciences, Hitit University, Çorum, Turkey
- Corresponding author.
| | - S. Özkınalı
- Department of Chemistry, Faculty of Arts and Sciences, Hitit University, Çorum, Turkey
| | - M.E. Castro
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, 18 sur y Av. San, Claudio, Col. San Manuel Puebla C. P. 72570, Mexico
| | - F.J. Melendez
- Lab. de Química Teórica, Centro de Investigación, Depto. de Fisicoquímica, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Edif. FCQ10, 22 Sur y San Claudio, Ciudad Universitaria, Col. San Manuel, C.P 72570, Puebla, Mexico
| | - H. Ghalla
- Quantum and Statistical Physics Laboratory, Faculty of Sciences, University of Monastir, 5079 Monastir, Tunisia
| | - L. Nouar
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - F. Madi
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - R. Ben. Chaabane
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Science of Monastir, Avenue of Environment, 5000 Monastir, Tunisia
- Corresponding author.
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Ullah H, Ahmad R, Khan AA, Khaliq N, Khan M, Ali G, Karim S, Yi X, Cho SO. A sensitive non-enzymatic glucose sensor based on MgO entangled nanosheets decorated with CdS nanoparticles: Experimental and DFT study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Welch PM, Dreier TA, Magurudeniya HD, Frith MG, Ilavsky J, Seifert S, Rahman AK, Rahman A, Singh AJ, Ringstrand BS, Hanson CJ, Hollingsworth JA, Firestone MA. 3D Volumetric Structural Hierarchy Induced by Colloidal Polymerization of a Quantum-Dot Ionic Liquid Monomer Conjugate. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul M. Welch
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Timothy A. Dreier
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | | | - Matthew G. Frith
- X-ray Sciences Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jan Ilavsky
- X-ray Sciences Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Sönke Seifert
- X-ray Sciences Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Aunik K. Rahman
- Applied Research & Photonics, Inc., Harrisburg, Pennsylvania 17111, United States
| | - Anis Rahman
- Applied Research & Photonics, Inc., Harrisburg, Pennsylvania 17111, United States
| | - Amita Joshi Singh
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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