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Uniaxially Oriented and Polymerized Chromonic Nanocolumns for Redox-Responsive Smart Glass
Chemistry of Materials ( IF 8.6 ) Pub Date : 2020-07-22 , DOI: 10.1021/acs.chemmater.0c00669
Dong-Gue Kang 1 , Minwoo Rim 1 , Hyeyoon Ko 1 , Jahyeon Koo 1 , Seok-In Lim 1 , Minwook Park 1 , Won-Jin Yoon 1 , Yu-Jin Choi 1 , Kwang-Un Jeong 1
Affiliation  

Bandwidth-tunable anisotropic spatial light modulators are fabricated with redox-responsive dichroic mesogens. By introducing an ionic group and a polymerizable group into the chromophore, the programmed reactive mesogen (PDI-MA) exhibits a lyotropic chromonic liquid crystal (LCLC) phase. The PDI-MA molecule forms a stable aromatic dianion state so that the absorption wavelengths of the dichroic mesogen can be reversibly tuned by redox reactions. Through a continuous process of coating, molecular self-assembly, and polymerization, redox-responsive and uniaxially oriented LCLC polymer films are fabricated. Because of the high dichroic ratio of PDI-MA, the uniaxially oriented LCLC network is capable of anisotropic light modulation in the visible-light spectrum. Uniaxially oriented LCLC films are applied to flexible multichromic smart windows and optical security filters for anticounterfeiting.

中文翻译:

用于氧化还原响应型智能玻璃的单轴取向和聚合的色子纳米柱

带宽可调的各向异性空间光调制器是由氧化还原响应性二向色性液晶元构成的。通过将离子基团和可聚合基团引入生色团,程序化反应性液晶元(PDI-MA)表现出溶致发色液晶(LCLC)相。PDI-MA分子形成稳定的芳族二价阴离子状态,因此可以通过氧化还原反应可逆地调节二色性液晶元的吸收波长。通过连续的涂覆,分子自组装和聚合过程,制造出了氧化还原响应性和单轴取向的LCLC聚合物薄膜。由于PDI-MA的高二色性比,单轴取向LCLC网络能够在可见光光谱中进行各向异性光调制。
更新日期:2020-09-22
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