Jump to main content
Jump to site search

Issue 6, 2019
Previous Article Next Article

Multivariate optimization of optical properties of CdSe quantum dots obtained by a facile one-pot aqueous synthesis

Author affiliations

Abstract

This work presents a multivariate optimization of a simple, fast and reproducible one-pot procedure for the aqueous synthesis of cadmium selenide (CdSe) quantum dots (QDs) stabilized with mercaptosuccinic acid (MSA), aiming to improve their photoluminescence (PL) properties. A full factorial design and the Doehlert matrix were used to find optimal conditions for the MSA/Cd molar ratio (varied from 2 : 1 to 11 : 1), the Cd/Se molar ratio (varied from 1 : 1 to 8 : 1), the initial pH (varied from 3.0 to 12.0) and the synthesis temperature (varied from 15 to 90 °C). Response surfaces obtained by statistically validated equations were used and the optimal conditions were MSA/Cd molar ratio of 6 : 1, Cd/Se molar ratio of 8 : 1, pH 5.0 and temperature of 30 °C, under stirring for 60 min. The CdSe QDs obtained under these conditions presented an average diameter of 3.2 nm showing a cubic zinc blende structure and a relative quantum yield of up to 29.7%.

Graphical abstract: Multivariate optimization of optical properties of CdSe quantum dots obtained by a facile one-pot aqueous synthesis

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Jan 2019, accepted on 19 Apr 2019 and first published on 08 May 2019


Article type: Research Article
DOI: 10.1039/C9QI00105K
Inorg. Chem. Front., 2019,6, 1350-1360

  •   Request permissions

    Multivariate optimization of optical properties of CdSe quantum dots obtained by a facile one-pot aqueous synthesis

    I. M. A. Viegas, B. S. Santos, A. Fontes, G. A. D. L. Pereira and C. F. Pereira, Inorg. Chem. Front., 2019, 6, 1350
    DOI: 10.1039/C9QI00105K

Search articles by author

Spotlight

Advertisements