Photoresponsive vesicle permeability based on intramolecular host-guest inclusion

Org Biomol Chem. 2014 Jan 28;12(4):600-6. doi: 10.1039/c3ob41893f.

Abstract

This article describes light-responsive vesicles that can release their contents in response to a light-sensitive molecular trigger. To this end, liposomes were equipped with amphiphilic β-cyclodextrin that was covalently labeled with azobenzene. Using dye encapsulation and confocal laser scanning microscopy, we show that the permeability of these vesicles strongly increases upon UV irradiation (λ = 350 nm) with concomitant isomerization of apolar trans-azobenzene to polar cis-azobenzene on the liposome surface.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Azo Compounds / chemistry*
  • Liposomes / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Particle Size
  • Photochemical Processes
  • Surface Properties
  • Surface-Active Agents / chemistry*
  • Ultraviolet Rays*
  • beta-Cyclodextrins / chemistry*

Substances

  • Azo Compounds
  • Liposomes
  • Surface-Active Agents
  • beta-Cyclodextrins
  • azobenzene
  • betadex