Preparation of photostable quantum dot-polystyrene microbeads through covalent organosilane coupling of CdSe@Zns quantum dots

Qiangbin Wang, Dong Kyun Seo

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16 Citations (Scopus)

Abstract

We report preparation of highly photoluminescent CdSe@ZnS quantum dot-polystyrene composite beads, by employing stepwisely: (1) a simultaneous ZnS shell formation and ligand exchange with 3-mercaptopropyltrimethoxy silane (MPS); (2) coupling MPS with polymerizable 3-(trimethoxysily)propylmethacrylate (MPM); and (3) polymerization of the resulting MPM-MPS capped CdSe@ZnS quantum dots with styrene molecules. The functionalized quantum dots exhibited robust chemical stability against the harsh radical polymerization condition and the resulting polymer microbeads were strong against photobleaching under an intense and continuous laser.[Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)816-820
Number of pages5
JournalJournal of Materials Science
Volume44
Issue number3
DOIs
Publication statusPublished - Feb 2009

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Silanes
Polystyrenes
Semiconductor quantum dots
Photobleaching
Styrene
Chemical stability
Free radical polymerization
Polymers
Ligands
Polymerization
Molecules
Lasers
Composite materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "We report preparation of highly photoluminescent CdSe@ZnS quantum dot-polystyrene composite beads, by employing stepwisely: (1) a simultaneous ZnS shell formation and ligand exchange with 3-mercaptopropyltrimethoxy silane (MPS); (2) coupling MPS with polymerizable 3-(trimethoxysily)propylmethacrylate (MPM); and (3) polymerization of the resulting MPM-MPS capped CdSe@ZnS quantum dots with styrene molecules. The functionalized quantum dots exhibited robust chemical stability against the harsh radical polymerization condition and the resulting polymer microbeads were strong against photobleaching under an intense and continuous laser.[Figure not available: see fulltext.]",
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N2 - We report preparation of highly photoluminescent CdSe@ZnS quantum dot-polystyrene composite beads, by employing stepwisely: (1) a simultaneous ZnS shell formation and ligand exchange with 3-mercaptopropyltrimethoxy silane (MPS); (2) coupling MPS with polymerizable 3-(trimethoxysily)propylmethacrylate (MPM); and (3) polymerization of the resulting MPM-MPS capped CdSe@ZnS quantum dots with styrene molecules. The functionalized quantum dots exhibited robust chemical stability against the harsh radical polymerization condition and the resulting polymer microbeads were strong against photobleaching under an intense and continuous laser.[Figure not available: see fulltext.]

AB - We report preparation of highly photoluminescent CdSe@ZnS quantum dot-polystyrene composite beads, by employing stepwisely: (1) a simultaneous ZnS shell formation and ligand exchange with 3-mercaptopropyltrimethoxy silane (MPS); (2) coupling MPS with polymerizable 3-(trimethoxysily)propylmethacrylate (MPM); and (3) polymerization of the resulting MPM-MPS capped CdSe@ZnS quantum dots with styrene molecules. The functionalized quantum dots exhibited robust chemical stability against the harsh radical polymerization condition and the resulting polymer microbeads were strong against photobleaching under an intense and continuous laser.[Figure not available: see fulltext.]

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