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Materials 2016, 9(12), 980; doi:10.3390/ma9120980

Photoresponsive Polymeric Reversible Nanoparticles via Self-Assembly of Reactive ABA Triblock Copolymers and Their Transformation to Permanent Nanostructures

1,2,* , 1
,
1
and
1,*
1
Department of Polymer and Composite Material, School of Materials Engineering, Yancheng Institute of Technology, Yancheng 224051, China
2
Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editor: Massimo Lazzari
Received: 8 October 2016 / Revised: 29 November 2016 / Accepted: 29 November 2016 / Published: 2 December 2016
View Full-Text   |   Download PDF [3631 KB, uploaded 2 December 2016]   |  

Abstract

Azobenzene-functionalized ABA triblock copolymers with controlled molecular weights are prepared first via a sequential ring-opening metathesis polymerization and acyclic diene metathesis polymerization in one-pot, which are readily converted, by a facile esterification, to the modified ABA triblock copolymers. Then, these reactive triblock copolymers can spontaneously self-assemble in a selective solvent to form reproducible and reversible polymeric core-shell nanoparticles. Finally, the stable and permanent shell-crosslinked nanoparticles are obtained by an intramolecular crosslinking reaction in dilute solution under UV light irradiation. These as-prepared polymeric nanoparticles and their precursor incorporating azobenzene chromophores exhibit distinct photoresponsive performance and morphological variation. View Full-Text
Keywords: triblock copolymer; polymeric nanoparticle; photoresponsive material; self-assembly; azobenzene triblock copolymer; polymeric nanoparticle; photoresponsive material; self-assembly; azobenzene
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Ding, L.; Li, J.; Jiang, R.; Song, W. Photoresponsive Polymeric Reversible Nanoparticles via Self-Assembly of Reactive ABA Triblock Copolymers and Their Transformation to Permanent Nanostructures. Materials 2016, 9, 980.

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