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Light Polarization‐Controlled Shape‐Memory Polymer/Gold Nanorod Composite

Light Polarization‐Controlled Shape‐Memory Polymer/Gold Nanorod Composite It is demonstrated that light polarization can be used to control photothermal effect‐based shape‐memory polymers (SMPs). Gold nanorods (AuNRs) are embedded in poly(vinyl alcohol) (PVA) and aligned by stretching the composite film. By changing the polarization direction of the incident laser at 785 nm with respect to the film stretching direction, the magnitude of the longitudinal surface plasmon resonance of AuNRs can be varied continuously, which determines the amount of heat generated upon laser exposure and thus the local temperature rise in the composite relative to the glass transition of the PVA matrix. Consequently, the temporary‐to‐permanent shape recovery process of the composite can be made to occur to different extents by tuning the polarization of laser while keeping all other conditions unchanged. This finding enhances the toolbox for controlling light‐triggered SMPs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Macromolecular Rapid Communications Wiley

Light Polarization‐Controlled Shape‐Memory Polymer/Gold Nanorod Composite

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References (19)

Publisher
Wiley
Copyright
©Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1022-1336
eISSN
1521-3927
DOI
10.1002/marc.201300629
pmid
24092559
Publisher site
See Article on Publisher Site

Abstract

It is demonstrated that light polarization can be used to control photothermal effect‐based shape‐memory polymers (SMPs). Gold nanorods (AuNRs) are embedded in poly(vinyl alcohol) (PVA) and aligned by stretching the composite film. By changing the polarization direction of the incident laser at 785 nm with respect to the film stretching direction, the magnitude of the longitudinal surface plasmon resonance of AuNRs can be varied continuously, which determines the amount of heat generated upon laser exposure and thus the local temperature rise in the composite relative to the glass transition of the PVA matrix. Consequently, the temporary‐to‐permanent shape recovery process of the composite can be made to occur to different extents by tuning the polarization of laser while keeping all other conditions unchanged. This finding enhances the toolbox for controlling light‐triggered SMPs.

Journal

Macromolecular Rapid Communications – Wiley

Published: Oct 1, 2013

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