标题（中文）：基于巴比妥酸的1,4-二氢吡啶衍生物具有多种颜色发射转换固态酸致变色性质的研究
标题（英文）：Solid-state acidochromic properties of barbituric acid-based 1,4-dihydropyridine derivatives with multiple coloured emissions switching
刊物名称及期号、页码： Dyes and Pigments, 2019, 160, pp 378–385
作者姓名（中文）：王梦竹 钱乐彬 郭阳 吴华悦 刘妙昌 高文霞 李国兴 丁金昌 黄小波
作者姓名（英文）：Mengzhu Wang, Lebin Qian, Yang Guo, Huayue Wu, Miaochang Liu,Wenxia Gao, Guoxing Li, Jinchang Ding ,Xiaobo Huang
摘要（英文）： Solid-state acidochromic (SSAC) molecules often exhibit dual-coloured rather than multi-coloured stimuli-responsive properties. To obtain the molecule possessing a multi- coloured emission switching based on one specific solid-state of a single molecule, a new D-π-A type 1,4-dihydropyridine derivative 4a containing barbituric acid and N,N-dimethylaniline unit, which contains multiple sites that can be combined with H+, is designed and synthesized. Compound 4a is confirmed to have twisted molecular conformation by crystallographic data and exhibits aggregation-induced emission characteristic. Upon the stimuli of acid-base system, 4a exhibits rare seven-coloured emission switching in solid-state. Another 1,4-dihydropyridine derivative 4b based on 1,3-dimethylbarbituric acid is synthesized for comparison. Compared with 4b which only displays three-coloured solid-state emission switching, 4a exhibits a more abundant colour change, which might be attributed that the nitrogen atoms on the N-H bonds are also involved in the process of protonation and deprotonation, slowing down the transformation between D-π-A and A-π-A structures. The results provide a new idea for the development of multicolor SSAC materials.
研究现状（中文）：有机智能材料由于其在荧光传感器，存储设备，安全油墨领域的潜在应用，已经深入研究了固态排放在外部刺激（机械力，pH，温度，蒸汽和光）下的可逆转换。等等。在这些材料中，尽管溶液中的pH驱动荧光开关是常见的，但关于固态酸性变色（SSAC）现象的报道非常有限。这种现象的一个重要原因是，由于臭名昭著的聚集引起的猝灭效应，大多数有机分子通常不发射或弱的固态荧光。最近，唐等人报道了聚集诱导发射（AIE）效应，即发现一些有机分子在溶液中发出弱荧光，但在固态下显着增强荧光。显然，AIE效应的发现为具有SSAC活性有机分子的开发带来了有希望的益处。此外，大多数报道的具有SSAC特性的荧光化合物仅在用酸性 - 碱性蒸汽熏蒸时显示出双色发射转换，其通常源自分子结构的质子化和去质子化。据我们所知，基于单个荧光分子的一种特定固态的多色发射转换很少被报道，因此这种现象仍然是一个挑战，值得探讨。
创新点（中文）：
1. 两种新的1,4-二氢吡啶衍生物的合成和表征。
2. AIE活性化合物表现出固态酸致变色
3.巴比妥酸类化合物在固态下显示罕见的七色发射转换。
原文链接：
https://doi.org/10.1016/j.dyepig.2018.08.018
