Surface modification and functionalization of semiconductor quantum dots through reactive coating of silanes in toluene

Ming Qiang Zhu, Emmanuel Chang, Jiantang Sun, Rebekah A. Drezek

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

We have reported a general method for biocompatible modification and multi-functionalization of semiconductor quantum dots (QDs) through direct reaction of organic silanes on the surface of semiconductor QDs. Functionalized QDs, including CdSe/ZnS, CdSe/CdS core/shell and PbS QDs, have been prepared at high concentration up to 10-4 M in homogeneous media, i.e. toluene. Fluorescence spectra and TEM images indicate that the modified QDs exhibit strong fluorescence and single particle features, respectively. Fluorescence images show that biocompatible CdSe/ZnS QDs are internalized into SK-BR-3 breast cancer cells after hydrophilic modification. Additionally, methacrylate- modified QDs have been used as monomers for radical polymerization.

Original languageEnglish (US)
Pages (from-to)800-805
Number of pages6
JournalJournal of Materials Chemistry
Volume17
Issue number8
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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