Direct synthesis of water-soluble ultrathin CdS nanorods and reversible tuning of the solubility by alkalinity

Journal of the American Chemical Society
Zhongbin ZhuangYadong Li

Abstract

Highly water-soluble ultrathin and fluorescent CdS nanorods are directly synthesized with the assistance of PEI. PEI plays as the passivator to control and induce the growth of the CdS nanorods and also makes the as-obtained nanorods dispersible in water. The as-obtained CdS nanorods are quite thin thus showing the quantum effect in the fluorescence. By adjusting the alkalinity of the solution, CdS nanorods can be controlled to precipitate or redisperse in water, which is believed to stem from the variation of the charges of the capping PEI molecules. These results provide an efficient and convenient way to directly synthesize water-soluble and fluorescent nanocrystals, which has potential application in biological labeling and detection.

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Citations

Jan 10, 2012·Inorganic Chemistry·Guoxin ZhangXiaoming Sun
Mar 17, 2011·Journal of the American Chemical Society·Zhengtao DengYan Liu
Jul 5, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Rajesh KombanMarkus Haase
Apr 23, 2011·Chemical Communications : Chem Comm·Hongchang PangYuan Lin
Sep 28, 2016·Journal of the American Chemical Society·Dandan ZhangPeidong Yang
Dec 17, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Chunlin BaoXiaoping Shen
Feb 6, 2020·Physical Chemistry Chemical Physics : PCCP·Yixuan ZhouJier Huang
Aug 30, 2011·Journal of the American Chemical Society·Guoxing ZhuXiaoping Shen

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