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Dual-responsive smart window and visually attractive coating based on a diarylethene photochromic dye

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APPLIED OPTICS
卷 58, 期 36, 页码 9823-9828

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Optica Publishing Group
DOI: 10.1364/AO.58.009823

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  1. TKI (PPS Smart Materials for Greenhouses)

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Controlling the intensity and manipulating the spectral composition of sunlight are critical for many devices including smart windows, greenhouses, and photomicroreactors, but these are also important in more decorative applications. Here, we use a diarylethene dye incorporated in a liquid crystal host to create a dual-responsive smart window regulated both by an electrical trigger and by specific wavelengths of light. By incorporating the same diarylethene dye in a polymerizable host and using inkjet printing, coatings can be made with complete freedom in the applied pattern design, although the electrical response is lost. The color change of the diarylethene dye can be controlled in simulated sunlight by concurrent light exposure from an LED source, allowing a manual override for outdoor use. Photoluminescence of the closed isomer of the diarylethene from the light guide edges could be used for lighting or electricity generation in a luminescent solar concentrator architecture. (C) 2019 Optical Society of America

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