Jump to main content
Jump to site search

Issue 16, 2013
Previous Article Next Article

Dual thermo- and photo-responsive micelles based on miktoarm star polymers

Author affiliations

Abstract

We report the synthesis and characterization of three novel azobenzene-containing miktoarm star polymers AB3 (Mn = 14 800, ĐM = 1.22, Mn = 17 400, ĐM = 1.10 and Mn = 26 200, ĐM = 1.12) as well as their self-assembly properties in water. The three polymers are composed of an azopolymer and three identical arms of poly(N,N-diethylacrylamide) (PDEAA), featuring thermo-responsive properties. By carefully selecting the polymerization degree of PDEAA, and consequently the hydrophobic/hydrophilic ratio, a specific miktoarm polymer has been identified that forms stable micelles in water as is clearly revealed by Transmission Electron Microscopy (TEM). In addition, the thermo- and photo-responsive properties of the polymeric micelles in water were investigated. Encapsulation of Nile Red was probed via fluorescence spectroscopy as well as its release from the loaded probes triggered by UV irradiation, which causes a trans-to-cis isomerisation of the azobenzene moieties.

Graphical abstract: Dual thermo- and photo-responsive micelles based on miktoarm star polymers

Back to tab navigation

Supplementary files

Publication details

The article was received on 06 May 2013, accepted on 02 Jun 2013 and first published on 03 Jun 2013


Article type: Paper
DOI: 10.1039/C3PY00576C
Citation: Polym. Chem., 2013,4, 4506-4514
  •   Request permissions

    Dual thermo- and photo-responsive micelles based on miktoarm star polymers

    E. Blasco, B. V. K. J. Schmidt, C. Barner-Kowollik, M. Piñol and L. Oriol, Polym. Chem., 2013, 4, 4506
    DOI: 10.1039/C3PY00576C

Search articles by author

Spotlight

Advertisements