BROWSE

Related Researcher

Author's Photo

Kim, Byeong-Su
Soft and Hybrid Nanomaterials Lab
Research Interests
  • Carbon materials, polymer, Layer-by-Layer (LbL) assembly, hyperbranched polymer, polyglycerol (PG), bio-applications

ITEM VIEW & DOWNLOAD

Crosslinked, glassy styrenic surfactants stabilize quantum dots against environmental extremes

Cited 13 times inthomson ciCited 12 times inthomson ci
Title
Crosslinked, glassy styrenic surfactants stabilize quantum dots against environmental extremes
Author
Shibasaki, Y.Kim, Byeong-SuYoung, A.J.Mcloon, A.L.Ekker, S.C.Taton, T.A.
Keywords
Amphiphilics; Aqueous suspensions; Average diameter; CdSe/ZnS; Cross-linked shells; Crosslinked; Enhanced stability; Hydrophobic coatings; Micro-injection; Particle assemblies; Particle suspensions; Poly(acrylic acid ); Quantum Dot; Quantum dot nanoparticles; Reaction conditions; Surface preparation; Uniform layer; Vasculature; Zebrafish embryos
Issue Date
2009-09
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.19, no.35, pp.6324 - 6327
Abstract
Semiconductor, quantum dot (QD) nanoparticles (including CdSe/ZnS, CdTe/ZnS, and CdSe) were encapsulated within crosslinked shells of amphiphilic polystyrene-block-poly(acrylic acid) block copolymer. Transmission electron microscopy revealed that each particle was surrounded by a uniform layer of copolymer, and that the average diameter of the resulting QD-core micelles was between 25 and 50 nm, depending on the conditions of particle assembly. Overall, we found that aqueous suspensions of these QDs were substantially more stable to heat and pH than particles with other surface preparations; we argue that the enhanced stability is due to the uniform, hydrophobic coating of polystyrene around each particle and the reinforcement of this layer by shell-crosslinking. The biocompatibility of these particles was investigated by micro-injection of particle suspension into live zebrafish embryos. The particles permanently stained the fish vasculature, but did not interfere with the normal development of the fish. We propose that QDs encapsulated in crosslinked block-copolymer shells allow QDs to be used in biological or biotechnological protocols requiring harsh reaction conditions.
URI
Go to Link
DOI
10.1039/b902275a
ISSN
0959-9428
Appears in Collections:
PHY_Journal Papers
Files in This Item:
000269289300010.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU