Light-Switchable Vesicles from Liquid-Crystalline Homopolymer-Surfactant Complexes
作者:Lei Li、Martin Rosenthal、Heng Zhang、Jaime J. Hernandez、Markus Drechsler、Kim Hô Phan、Stephan Rütten、Xiaomin Zhu、Dimitri A. Ivanov、Martin Möller
DOI:10.1002/anie.201205660
日期:2012.11.12
Polymeric onions: A concept of vesicle fabrication based on nonstoichiometric complexation of a polybase with an amphiphilic ligand bearing a sulfonic acid group is developed (see picture). In contrast to conventional polymersomes, the polymer backbones are oriented mainly parallel to the vesicle walls. The vesicles can collapse under UV irradiation because of a UV‐triggered trans–cis isomerization
New diacetylenic compounds are described. These compounds are unfunctionalised, monoalcohols, diols or monoesters and present irreversible thermochromic behaviour. When heated, these diynes change colour from blue to red in temperature ranging between −50 and +75 °C depending on chain lengths. A relationship between the number of atoms and the thermochromism temperature has been highlighted. Moreover