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Issue 26, 2018
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Active and passive modulation of solar light transmittance in a hybrid thermochromic soft-matter system for energy-saving smart window applications

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Abstract

Thermochromic systems are promising candidates for energy-saving smart window applications. However, these passively responsive optical materials are subject to limitations such as a lack of active optical control, poor solar modulation (ΔTsol) ability, and rather inconvenient switching-temperature tunability. Herein, we present a simply processed hybrid thermochromic soft-matter material sandwiched between two transparent graphene sheets, where the intermediate material possesses a phase-separated polymer framework containing liquid-crystalline micro-domains with sematic A (SmA) to chiral nematic (N*) phase change behavior and tungsten doped vanadium dioxide (W–VO2) nanocrystals (NCs). This hybrid organic/inorganic thermochromic system not only features high mechanical strength, excellent flexibility and large-area processibility, but also possesses a dual-active/passive optical modulation mode, controllable visible and near infrared light transmittance, a tunable switching-temperature and a high ΔTsol of 40.9%. This work not only enriches the family of thermochromic materials, embracing broad practical applications in buildings and automobiles, but also gives new insights into the next generation of smart window technologies.

Graphical abstract: Active and passive modulation of solar light transmittance in a hybrid thermochromic soft-matter system for energy-saving smart window applications

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Publication details

The article was received on 16 Mar 2018, accepted on 10 Jun 2018 and first published on 12 Jun 2018


Article type: Paper
DOI: 10.1039/C8TC01274A
Citation: J. Mater. Chem. C, 2018,6, 7054-7062
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    Active and passive modulation of solar light transmittance in a hybrid thermochromic soft-matter system for energy-saving smart window applications

    X. Liang, M. Chen, Q. Wang, S. Guo, L. Zhang and H. Yang, J. Mater. Chem. C, 2018, 6, 7054
    DOI: 10.1039/C8TC01274A

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