Cadmium sulfide quantum dots in water media: Enhanced photoluminescence, dispersion and stability

被引：0
|
作者：
Kuznetsova, Yulia, V [1 ]
Popov, Ivan D. [1 ]
Gerasimov, Evgeny Yu. [2 ]
Rempel, Andrey A. [3 ,4 ]
机构：
[1] Russian Acad Sci, Inst Solid State Chem, Ural Branch, Pervomaiskaya Str 91, Ekaterinburg 620990, Russia
[2] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Lavrentieva Str 5, Novosibirsk 630090, Russia
[3] Russian Acad Sci, Inst Met, Ural Branch, Amundsena St 101, Ekaterinburg 620016, Russia
[4] Ural Fed Univ, Mira St 19, Ekaterinburg 620002, Russia
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2023年 / 371卷
关键词：
CdS; Quantum dots; Ligand shell; Colloidal stability; Luminescence; MAGNETIC FE3O4 NANOPARTICLES; DEPENDENT OPTICAL-PROPERTIES; SELF-ASSEMBLED MONOLAYERS; CDS NANOPARTICLES; PHOTOCATALYTIC ACTIVITY; SIZE; FUNCTIONALIZATION; LUMINESCENCE; CHALLENGES; PARTICLES;
D O I：
10.1016/j.molliq.2022.121084
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Within the presented study, we have investigated the effect of the ligand shell on the stability and optical properties of cadmium sulfide (CdS) quantum dots in a water colloidal solution stabilized by 3-mercapto propyltrimethoxysilane (MPS). The correlation between stability and parameters of nanoparticles, namely, hydrodynamic radius, nucleus size and zeta-potential has been established. The optimal synthe-sis conditions of stable colloidal solutions shown the luminescence have been found. The mechanism of structural organization of the organic MPS shell, its bonding to the semiconductor nanoparticle surface and influence on the agglomeration have been developed. The mechanism of MPS capped CdS QDs lumi-nescence switch on in water solution by pH control was proposed.(c) 2022 Elsevier B.V. All rights reserved.
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页数：11
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