Li Guoqiang, Wang Yan, Li Yaohui, Wen Zengheng, Luo Zhuang, Song Weijun, Zhang Weidong
School of Chemical Engineering, Qinghai University Xining 810016 China
RSC Adv. 2025 May 12;15(20):15480-15489. doi: 10.1039/d5ra01331c.
Stimuli-responsive materials, especially multi-stimuli-responsive ones, represent a kind of intelligent materials with significant potential in high-tech innovations, owing to their ability to undergo physical property changes in response to external stimuli. This investigation produced three new functionalized donor-acceptor (D-A) fluorophores, specifically aminoboranes incorporating phenothiazyl groups (4a, 4b, and 4c), featuring analogous structural components. These aminoborane derivatives demonstrated excellent resistance to air/moisture degradation, along with reduced HOMO energy states compared to a CN-containing analog, 4d. Analysis indicated that these aminoborane compounds displayed fascinating photophysical characteristics, encompassing aggregation-induced emission (AIE). Notably, the diarylboryl-phenothiazines show case reversible and distinct multi-stimuli-responsive luminescence upon exposure to fluoride ions, voltage, and mechanical force. This investigation enhances understanding of molecular interaction mechanisms and structural modifications essential for developing advanced stimuli-responsive luminescent compounds.
刺激响应材料，尤其是多刺激响应材料，是一类在高科技创新中具有巨大潜力的智能材料，因为它们能够响应外部刺激而发生物理性质变化。本研究制备了三种新型功能化供体-受体（D-A）荧光团，具体为含吩噻嗪基的氨基硼烷（4a、4b和4c），它们具有相似的结构组成。这些氨基硼烷衍生物表现出优异的抗空气/水分降解性能，并且与含氰类似物4d相比，其最高占据分子轨道（HOMO）能量状态降低。分析表明，这些氨基硼烷化合物展现出迷人的光物理特性，包括聚集诱导发光（AIE）。值得注意的是，二芳基硼基-吩噻嗪在暴露于氟离子、电压和机械力时表现出可逆且独特的多刺激响应发光。本研究增进了对开发先进刺激响应发光化合物所必需的分子相互作用机制和结构修饰的理解。
