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Stimuli-responsive materials, especially piezo- or mechano-fluorochromic (PFC) materials, have attracted much attention due to their potential applications in optical recording and fluorescence sensors.1–3 In principle, changes in the solid-state fluorescence of conjugated organic materials could be achieved by chemical or physical methods. The chemical method involves solid-state chemical reactions that provoke chemical structural changes of molecules4 and are usually incompleteand irreversible. The physical method, which involves the change of molecular packing mode instead of chemical alteration of the molecular structure, has been attracting considerable interest because switching and tuning the solid-state color and/or luminescence properties by controlling the molecular packing mode could not only provide practical applications in optical recording and sensing but also profit the fundamental understanding of photophysical properties. While there have been a variety of reports on organic and organometallic chromophores with PFC behaviour,1–3,5–8 recently, some conjugated organic molecules exhibiting aggregation-induced/crystallization- enhanced emission (AIE/CEE) have been the new mainstay of PFC materials.9–13 |
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| 由于其在光学记录和荧光传感器的应用潜力【1-3】，刺激－反应性材料，特别是压致或机械 - 氟致变色（PFC）材料备受关注。原则上，可以通过化学或物理方法来实现共轭有机材料的固态荧光的变化。化学方法包括引发分子的化学结构变化的固态化学反应【4】，这类反应通常是不彻底和不可逆的。物理方法，涉及到改变分子堆积模式，而不是分子结构的化学变化，已经引起了相当大的兴趣，因为通过控制所述分子的堆积模式而转换和调制固态颜色和/或发光特性，不仅可以在光学记录和检测领域提供实际应用，而且对光物理性质获取基本认识。虽然有各种各样具有PFC的性能的有机和有机金属发色团的报告【1-3,5-8】，最近，具有聚集诱导/结晶增强的发光（AIE/ CEE）的一些共轭有机分子已成为PFC的新支柱材料【9-13】。 |
2楼2014-10-17 22:07:10