Yang Si Kyung, Zimmerman Steven C
Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (USA).
Adv Funct Mater. 2012 Jul 24;22(14):3023-3028. doi: 10.1002/adfm.201200004. Epub 2012 Apr 17.
The synthesis and photophysical properties of water-soluble, fluorescent polyglycerol-dendronized perylenediimides - are reported. The polyglycerol dendrons, which are known to be highly biocompatible, are found to confer high water-solubility on the perylenediimide in aqueous media while retaining its excellent fluorescent properties. Furthermore, intramolecular cross-linking of the polyglycerol dendrons using the ring-closing metathesis reaction not only enhances the photostability but also reduces the size of perylenediimide-cored dendrimers. The permeability of the various dendritic shells is probed using heavy metal ion quenchers and compared to non-dendritic but water-soluble perylenediimide .
报道了水溶性荧光聚甘油树枝状苝二亚胺的合成及其光物理性质。已知聚甘油树枝状分子具有高度生物相容性，发现其能使苝二亚胺在水性介质中具有高水溶性，同时保留其优异的荧光性质。此外，使用闭环易位反应对聚甘油树枝状分子进行分子内交联，不仅提高了光稳定性，还减小了以苝二亚胺为核的树枝状聚合物的尺寸。使用重金属离子猝灭剂探测各种树枝状外壳的渗透性，并与非树枝状但水溶性的苝二亚胺进行比较。
