Limiting the Growth of Water-Soluble, Monolayer-Protected Quantum Dots. (2nd July 2018)

• Record Type: Journal Article
• Authors: Conner, Ava E.; Gordillo-Herrejon, Veronica; Francone, Sonia C.; Shriner, Emily A.; Acosta, Fernando E.; Barnett, Nathan D.; Miles, Deon T.
• Other Names: Feng Jiu-Ju Academic Editor.
• Is Part Of: International journal of analytical chemistry. Volume 2018(2018)
• Publication Date: 2018-07-02
• Subjects: Chemistry, Analytic -- Periodicals; 543.05
• DOI: 10.1155/2018/3164347
• Languages: English
• ISSNs: 1687-8760

Abstract

Abstract : The growth and solubility of quantum dots (QDs) are important factors that must be examined before these nanoparticles are incorporated into a variety of potential applications. In this work, monolayer-protected CdSe QDs surrounded by water-soluble thiols were prepared using various cadmium salts. The use of a variety of cadmium salts did not have a significant impact on the spectral properties of the CdSe QDs. CdSe QDs were synthesized at rather low temperatures (< 0°C), resulting in slow nanoparticle growth upon subsequent heating of the reaction mixture. The effect of multiple drying and redissolving cycles of the QD samples was examined. The effect of heating temperature on QD growth was studied, with more rapid nanoparticle growth associated with higher temperatures. The results show that QDs can be synthesized at low temperatures and their subsequent growth can be controlled during the heating process.