Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6 Canada.
ACS Appl Mater Interfaces. 2012 Mar;4(3):1178-81. doi: 10.1021/am3001715. Epub 2012 Feb 28.
Anchoring 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.
在核壳型 CdSe/ZnS 量子点的表面上，自组装二肽的锚定导致了量子点表面原子的配位与二肽在甲苯中自组装的强烈趋势之间的竞争。这导致了温和的 QD 刻蚀和纳米晶体带隙的相应增加，其光致发光发射逐渐随时间变为蓝色。FmocLeuLeuOH 二肽超分子凝胶剂在原纤维中自组装，其中 Fmoc 基团被亮氨酸残基的侧链包围，具有振动圆二色性（VCD）和扭转反平行β-片的液态和固态 NMR 属性。
