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Colloidal silicon quantum dots: from preparation to the modification of self-assembled monolayers (SAMs) for bio-applications.

Authors
  • Cheng, Xiaoyu
  • Lowe, Stuart B
  • Reece, Peter J
  • Gooding, J Justin
Type
Published Article
Journal
Chemical Society reviews
Publication Date
Apr 21, 2014
Volume
43
Issue
8
Pages
2680–2700
Identifiers
DOI: 10.1039/c3cs60353a
PMID: 24395024
Source
Medline
License
Unknown

Abstract

Concerns over possible toxicities of conventional metal-containing quantum dots have inspired growing research interests in colloidal silicon nanocrystals (SiNCs), or silicon quantum dots (SiQDs). This is related to their potential applications in a number of fields such as solar cells, optoelectronic devices and fluorescent bio-labelling agents. The past decade has seen significant progress in the understanding of fundamental physics and surface properties of silicon nanocrystals. Such understanding is based on the advances in the preparation and characterization of surface passivated colloidal silicon nanocrystals. In this critical review, we summarize recent advances in the methods of preparing high quality silicon nanocrystals and strategies for forming self-assembled monolayers (SAMs), with a focus on their bio-applications. We highlight some of the major challenges that remain, as well as lessons learnt when working with silicon nanocrystals (239 references).

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