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Photochromism and Fluorescence Switch of Furan-Containing Tetraarylethene Luminogens with Aggregation-Induced Emission for Photocontrolled Interface-Involved Applications.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-08-19 , DOI: 10.1021/acsami.0c12603 Sidan Guo 1 , Shasha Zhou 1 , Jiajing Chen 1 , Ping Guo 1 , Riqing Ding 1 , Huili Sun 1 , Hui Feng 1 , Zhaosheng Qian 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-08-19 , DOI: 10.1021/acsami.0c12603 Sidan Guo 1 , Shasha Zhou 1 , Jiajing Chen 1 , Ping Guo 1 , Riqing Ding 1 , Huili Sun 1 , Hui Feng 1 , Zhaosheng Qian 1
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It is extremely challenging to design photocontrolled molecular switches with absorption and fluorescence dual-mode outputs that are suited for a solid surface and interface. Herein, we report a group of furan-containing tetraarylethene derivatives with unique photophysical behavior of aggregation-induced emission (AIE) and distinct photochemical reaction-triggered photochromic behaviors by combining a photoactive furan or benzofuran group and an AIE-active triphenylethene molecule. The introduction of a furyl or benzofuryl group into the AIE luminogen endows the molecules with significant reversible photochromism and solid-state fluorescence. The coloration and decoloration of these molecules can be switched by respective irradiation of UV and visible light in a reversible way, and the photochromic changes are accompanied by a switch-on and switch-off of the solid-state fluorescence. It is revealed that the photocontrolled cyclization and cycloreversion reactions are responsible for the reversible photochromism and fluorescence switching based on experimental data and theoretical analysis. Both the position and conjugation of the introduced photoactive units have significant influence on the color and strength of the photochromism, and the simultaneous occurrence of photoinduced fluorescence change in the solid state is perfectly suited for surface-involved applications. The demonstrations of dual-mode signaling in photoswitchable patterning on a filter paper and anti-counterfeiting of an anti-falsification paper strongly highlight the unique advantage of these photochromic molecules with an aggregation-induced emission characteristic in various practical applications. This work proposes a general strategy to design photochromic molecules with AIE activity by introducing photoactive functionals into an AIEgen and demonstrates incomparable advantage in dual-mode signaling and multifunctional applications of these molecules.
中文翻译：
含呋喃的四芳基乙烯发光体的光致变色和荧光开关，具有聚集诱导的发射，可用于涉及光控界面的应用。
设计具有适合固态表面和界面的吸收和荧光双模输出的光控分子开关是极具挑战性的。在这里，我们通过结合光敏性呋喃或苯并呋喃基团和AIE活性三苯乙稀分子，报道了一组含呋喃的四芳基乙烯衍生物，它们具有独特的聚集诱导发射（AIE）光物理行为和独特的光化学反应触发的光致变色行为。在AIE发光剂中引入呋喃基或苯并呋喃基使分子具有显着的可逆光致变色和固态荧光。这些分子的着色和脱色可以通过可逆方式分别通过紫外线和可见光的照射进行切换，并且光致变色变化伴随着固态荧光的开启和关闭。实验数据和理论分析表明，光控环化和环还原反应是造成可逆光致变色和荧光转换的原因。引入的光敏单元的位置和共轭都对光致变色的颜色和强度有显着影响，并且在固态下同时发生光致荧光变化非常适合于涉及表面的应用。在滤纸上进行光转换图案化和防伪纸的防伪双模信号的演示，强烈突出了这些光致变色分子在各种实际应用中具有聚集诱导的发射特性的独特优势。这项工作提出了通过将光敏功能引入AIEgen来设计具有AIE活性的光致变色分子的一般策略，并展示了在这些分子的双模式信号传导和多功能应用中无与伦比的优势。
更新日期：2020-09-16
中文翻译：
含呋喃的四芳基乙烯发光体的光致变色和荧光开关，具有聚集诱导的发射，可用于涉及光控界面的应用。
设计具有适合固态表面和界面的吸收和荧光双模输出的光控分子开关是极具挑战性的。在这里，我们通过结合光敏性呋喃或苯并呋喃基团和AIE活性三苯乙稀分子，报道了一组含呋喃的四芳基乙烯衍生物，它们具有独特的聚集诱导发射（AIE）光物理行为和独特的光化学反应触发的光致变色行为。在AIE发光剂中引入呋喃基或苯并呋喃基使分子具有显着的可逆光致变色和固态荧光。这些分子的着色和脱色可以通过可逆方式分别通过紫外线和可见光的照射进行切换，并且光致变色变化伴随着固态荧光的开启和关闭。实验数据和理论分析表明，光控环化和环还原反应是造成可逆光致变色和荧光转换的原因。引入的光敏单元的位置和共轭都对光致变色的颜色和强度有显着影响，并且在固态下同时发生光致荧光变化非常适合于涉及表面的应用。在滤纸上进行光转换图案化和防伪纸的防伪双模信号的演示，强烈突出了这些光致变色分子在各种实际应用中具有聚集诱导的发射特性的独特优势。这项工作提出了通过将光敏功能引入AIEgen来设计具有AIE活性的光致变色分子的一般策略，并展示了在这些分子的双模式信号传导和多功能应用中无与伦比的优势。
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