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A facile synthesis of dynamic, shape-changing polymer particles.

ABSTRACT: We herein report a new facile strategy to ellipsoidal block copolymer nanoparticles that exhibit a pH-triggered anistropic swelling profile. In a first step, elongated particles with an axially stacked lamellae structure are selectively prepared by utilizing functional surfactants to control the phase separation of symmetric polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) in dispersed droplets. In a second step, the dynamic shape change is realized by cross-linking the P2VP domains, thereby connecting glassy PS discs with pH-sensitive hydrogel actuators.

SUBMITTER: Klinger D

PROVIDER: S-EPMC4074252 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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A facile synthesis of dynamic, shape-changing polymer particles.

Klinger Daniel D Wang Cynthia X CX Connal Luke A LA Audus Debra J DJ Jang Se Gyu SG Kraemer Stephan S Killops Kato L KL Fredrickson Glenn H GH Kramer Edward J EJ Hawker Craig J CJ

Angewandte Chemie (International ed. in English) 20140402 27

We herein report a new facile strategy to ellipsoidal block copolymer nanoparticles that exhibit a pH-triggered anistropic swelling profile. In a first step, elongated particles with an axially stacked lamellae structure are selectively prepared by utilizing functional surfactants to control the phase separation of symmetric polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) in dispersed droplets. In a second step, the dynamic shape change is realized by cross-linking the P2VP domains, thereby conn ...[more]

PMID: 24700705

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