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


Crosslinked, glassy styrenic surfactants stabilize quantum dots against environmental extremes

DC Field Value Language Shibasaki, Y. ko Kim, Byeong-Su ko Young, A.J. ko Mcloon, A.L. ko Ekker, S.C. ko Taton, T.A. ko 2014-11-10T01:30:48Z - 2014-11-07 ko 2009-09 -
dc.identifier.citation JOURNAL OF MATERIALS CHEMISTRY, v.19, no.35, pp.6324 - 6327 ko
dc.identifier.issn 0959-9428 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.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. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ROYAL SOC CHEMISTRY ko
dc.subject Amphiphilics ko
dc.subject Aqueous suspensions ko
dc.subject Average diameter ko
dc.subject CdSe/ZnS ko
dc.subject Cross-linked shells ko
dc.subject Crosslinked ko
dc.subject Enhanced stability ko
dc.subject Hydrophobic coatings ko
dc.subject Micro-injection ko
dc.subject Particle assemblies ko
dc.subject Particle suspensions ko
dc.subject Poly(acrylic acid ) ko
dc.subject Quantum Dot ko
dc.subject Quantum dot nanoparticles ko
dc.subject Reaction conditions ko
dc.subject Surface preparation ko
dc.subject Uniform layer ko
dc.subject Vasculature ko
dc.subject Zebrafish embryos ko
dc.title Crosslinked, glassy styrenic surfactants stabilize quantum dots against environmental extremes ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-69249191458 ko
dc.identifier.wosid 000269289300010 ko
dc.type.rims ART ko
dc.description.wostc 13 *
dc.description.scopustc 12 * 2015-05-06 * 2014-11-08 *
dc.identifier.doi 10.1039/b902275a ko
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