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Aqueous-phase reactions on hollow silica-encapsulated semiconductor nanoheterostructures.

We introduce a facile and robust methodology for the aggregation-free aqueous-phase synthesis of hierarchically complex metal-semiconductor heterostructures. By encapsulating semiconductor nanostructures within a porous SiO(2) shell with a hollow interior, we can isolate each individual particle whi... Full description

Journal Title: Journal of the American Chemical Society May 30, 2012, Vol.134(21), pp.8754-8757
Main Author: Lian, Jie
Other Authors: Xu, Yang , Lin, Ming , Chan, Yinthai
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1520-5126 ; DOI: 1520-5126 ; DOI: 10.1021/ja301805u
Link: http://search.proquest.com/docview/1017981779/?pq-origsite=primo
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recordid: proquest1017981779
title: Aqueous-phase reactions on hollow silica-encapsulated semiconductor nanoheterostructures.
format: Article
creator:
  • Lian, Jie
  • Xu, Yang
  • Lin, Ming
  • Chan, Yinthai
subjects:
  • Chemistry
ispartof: Journal of the American Chemical Society, May 30, 2012, Vol.134(21), pp.8754-8757
description: We introduce a facile and robust methodology for the aggregation-free aqueous-phase synthesis of hierarchically complex metal-semiconductor heterostructures. By encapsulating semiconductor nanostructures within a porous SiO(2) shell with a hollow interior, we can isolate each individual particle while allowing it access to metal precursors for subsequent metal growth. We illustrate this by Pt deposition on CdSe-seeded CdS tetrapods, which we found to be facilitated via the surprising formation of a thin interfacial layer of PtS coated onto the original CdS surface. We took advantage of this unique architecture to perform cation exchange reactions with Ag(+) and Pd(2+), thus demonstrating the feasibility of achieving such transformations in complex metal-semiconductor nanoparticle systems.
language: eng
source:
identifier: E-ISSN: 1520-5126 ; DOI: 1520-5126 ; DOI: 10.1021/ja301805u
fulltext: no_fulltext
issn:
  • 15205126
  • 1520-5126
url: Link


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