Size reduction of CdSe/ZnS quantum dots by a peptidic amyloid supergelator

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DOIResolve DOI: http://doi.org/10.1021/am3001715
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TypeArticle
Journal titleACS Applied Materials and Interfaces
ISSN1944-8244
1944-8252
Volume4
Issue3
Pages11781181; # of pages: 4
Subjectnanoparticles; etching; peptide; gelator; self-assembly; quantum dots
AbstractAnchoring of a self-assembling dipeptide on the surface of core/shell CdSe/ZnS quantum dots resulted in a competition between coordination of the surface atoms of the QDs and the strong tendency for the dipeptide to self-assemble in toluene. This resulted in a mild QD etching and in a corresponding increase in the band gap of the nanocrystals whose photoluminescent emission gradually turns blue with time. The FmocLeuLeuOH dipeptide supergelator self-assembles in fibrils in which the Fmoc groups are surrounded by the pendant isobutyl side chains of the leucine residues with vibrational circular dichroism (VCD) and liquid- and solid-state NMR attributes of twist anti-parallel β-sheets.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; NRC Institute for Research in Construction; NRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number21268860
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Record identifiere96b8fd6-1102-423f-b603-dfc82d3a0c8d
Record created2013-11-15
Record modified2016-05-09
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