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Monodisperse, high refractive index, highly charged ZnS colloids self assemble into crystalline colloidal arrays

Luo, J and Qu, D and Tikhonov, A and Bohn, J and Asher, SA (2010) Monodisperse, high refractive index, highly charged ZnS colloids self assemble into crystalline colloidal arrays. Journal of Colloid and Interface Science, 345 (2). 131 - 137. ISSN 0021-9797

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Abstract

We developed an efficient synthesis of monodisperse, highly surface charged, high refractive index ZnS spherical particles by using a gel-sol method. Concentrated solutions of zinc-ammonia-NTA (nitrilotriacetic acid) were reacted with thioacetamide in the presence of gelatin which stabilized the growing particles. We dramatically increased the particle surface charge density by condensing silica and silylated phosphonate groups on the particle surface. These monodisperse highly charged ZnS particles are somewhat porous and have a refractive index of 1.868. These are the highest refractive index, monodisperse, highly charged spherical particles to self assemble into non-close-packed crystalline colloidal arrays which Bragg diffract light. © 2010 Elsevier Inc.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Luo, J
Qu, D
Tikhonov, A
Bohn, J
Asher, SAasher@pitt.eduASHER
Date: 1 May 2010
Date Type: Publication
Journal or Publication Title: Journal of Colloid and Interface Science
Volume: 345
Number: 2
Page Range: 131 - 137
DOI or Unique Handle: 10.1016/j.jcis.2010.02.002
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
ISSN: 0021-9797
PubMed ID: 20206938
Date Deposited: 08 Feb 2013 20:59
Last Modified: 02 Feb 2019 16:55
URI: http://d-scholarship.pitt.edu/id/eprint/17243

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