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Issue 45, 2019
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Reusable gold nanorod/liquid crystalline elastomer (GNR/LCE) composite films with UV-triggered dynamic crosslinks capable of micropatterning and NIR actuation

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Abstract

The design and preparation of novel liquid crystalline elastomers (LCEs) are highly desirable for the development of smart soft materials with quick stimuli-responsive characteristics. In this work, we present a facile preparation strategy of near infrared (NIR)-responsive gold nanorod/liquid crystalline elastomer (GNR/LCE) composite films exhibiting fascinating re-shapeable and reusable properties. A random side-chain liquid crystalline copolymer containing biphenyl mesogens and cinnamate side groups has been prepared via ring-opening metathesis polymerization (ROMP), with the [2+2] (retro)cycloaddition of cinnamate groups triggered by various wavelength UV light serving as the reversible dynamic crosslinks for the construction of re-shapeable LCEs. The GNR/LCE composite films with uniformly doped monodisperse GNRs demonstrate remarkable photothermal effects and multi-mode NIR-driven macroscopic deformation capabilities. Furthermore, a single-layer dual-phase composite film composed of periodic micro-patterned monodomain (M) and polydomain (P) structures has been fabricated, which is promising for precise localized NIR-responsive actuation and fully photo-controlled LCE composite devices.

Graphical abstract: Reusable gold nanorod/liquid crystalline elastomer (GNR/LCE) composite films with UV-triggered dynamic crosslinks capable of micropatterning and NIR actuation

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Publication details

The article was received on 22 Aug 2019, accepted on 17 Oct 2019 and first published on 18 Oct 2019


Article type: Paper
DOI: 10.1039/C9TC04651H
J. Mater. Chem. C, 2019,7, 14245-14254

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    Reusable gold nanorod/liquid crystalline elastomer (GNR/LCE) composite films with UV-triggered dynamic crosslinks capable of micropatterning and NIR actuation

    Z. Wu, L. Liu, P. Cheng, J. Fang, T. Xu and D. Chen, J. Mater. Chem. C, 2019, 7, 14245
    DOI: 10.1039/C9TC04651H

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