Cited by 154Advanced Materials and MechanicsPolymer composites and self-healingHydrogels: synthesis, properties, applications

Optically triggered and spatially controllable shape-memory polymer–gold nanoparticle composite materials

Zhang, Hongji, Xia, Hesheng, Zhao, Yue·2012·J. Mater. Chem.

Abstract

A new optically triggered shape memory composite material was prepared and investigated. Poly(ε-caprolactone) (PCL)-surface functionalized AuNPs were loaded in a thermosensitive shape-memory polymer (SMP) matrix of biodegradable, branched oligo(ε-caprolactone) (bOCL) cross-linked with hexamethylene diisocyanate (HMDI), referred to as XbOCL. By making use of a localized photothermal effect arising from the SPR absorption of AuNPs, we are able to demonstrate an optically triggered and spatially selective shape recovery process, with a stretched AuNP-loaded XbOCL film undergoing stepwise contraction and lifting of a load. Since the shape recovery process can be halted at any time by turning off the light exposure, multiple intermediate shapes can readily be obtained. These are appealing features that cannot be obtained from thermally activated SMPs based on a bulk thermal effect. Moreover, the magnitude of the photoinduced temperature increase of the material can be controlled by adjusting the laser power, it is also possible to use the same AuNP-loaded composite material for applications with different environmental temperatures below Ttransition, since the thermal transition at T > Ttransition can be optically induced by a laser from different environmental temperatures.

Integrity signals

Registry

Crossref · 10.1039/c1jm14615g

Cites

14 of 14 references verified0 citation errors · 0 not checkable

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  • Fillers such as indocyanine green and Epolight 4121, gold particles, conductive ceramics, carbon blacks, nanotubes, and even ink may be incorporated in SMPs to improve the heating efficiency.

    “Fillers such as indocyanine green and Epolight 4121, gold particles [423,424], conductive ceramics, carbon blacks, nanotubes, and even ink [425] may be incorporated in SMPs to improve the heating efficiency [149,311,416,426,427].”
  • The shape recovery by the localized photothermal effect of gold particles can be controlled by the intensity of light, which determines the amount of heat generated by the gold nanoparticles.

    “The shape recovery by the localized photothermal effect of gold particles can be controlled by the intensity of light which determines the amount of heat generated by the gold nanoparticles.”

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Authors
Zhang, H., Xia, H., & Zhao, Y.
Affiliations
  • Université de Sherbrooke (CA)
  • Sichuan University (CN)
Corresponding author
  • Xia, Hesheng
  • Zhao, Yue
Venue
J. Mater. Chem.
Published
2012
Volume
22
Issue
3
Pages
845-849
ISSN
  • 0959-9428 (ISSN-L)
  • 1364-5501
OpenAlex
W2065641948
Cited by
154
References
15
Citations by year
2026: 5 · 2025: 9 · 2024: 4 · 2023: 7 · 2022: 13 · 2021: 10 · 2020: 13 · 2019: 20 · 2018: 13 · 2017: 13 · 2016: 16 · 2015: 11 · 2014: 6 · 2013: 11 · 2012: 2
FWCI
10.77
Type
journal article
Language
en
Open access
closed
Locations
Journal of Materials Chemistry (publishedVersion)
Funders
Engineering and Physical Sciences Research Council (EP/I033424/1)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
Keywords
shape memory polymers, gold nanoparticles, polycaprolactone, functionalized nanoparticles, surface plasmon resonance, biodegradable polymers, laser power control

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