水友性共晶与水切换的发光效应
Lei Gao1,2, Glib V Baryshnikov3,4, Amjad Ali3
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China.
Angewandte Chemie (International ed. in English)
|January 5, 2024
概括
研究人员使用水友性捐赠体和1,2,4,5-四亚烯 (TCNB) 制造了对水敏感的发光共晶体. 添加水可逆切换发光"打开"和"关闭",使传感器应用.
科学领域:
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
- 摄影化学的使用.
背景情况:
- 在固体材料中用水控制发光是很困难的.
- 有机共晶通过分子组装提供可调节的特性.
- 开发响应刺激的发光材料对于先进的应用至关重要.
研究的目的:
- 设计和合成新的水触发发光变共晶.
- 为了研究水诱导发光调节的机制.
- 探索这些共晶体作为传感器和信息加密的潜在应用.
主要方法:
- 与1,2,4,5-四亚二烯 (TCNB,受体) 一起组装化衍生物 (供体).
- 使用光物理测量,粉末X射线衍射 (PXRD) 和密度函数理论 (DFT) 计算进行了表征.
- 测试对水,温度,湿度和特定离子 (H+/NH4+) 的反应性.
主要成果:
- 合成了两个共晶体,2PYTC和4PYTC,表现出热激活的辐射.
- 水分子通过与供体和受体分子相互作用,可逆地灭或减弱发光.
- DFT的计算显示,水的OH键振动吸收了激发能量,抑制了光.
- 晶显示可逆光"开启-关闭"切换和对温度,湿度和H+/NH4+的响应.
结论:
- 成功开发了一种创建水触发发光交换共晶的策略.
- 可逆光调制归因于水分子的结合和在晶格内的振动.
- 这些智能水友性有机共晶体对传感和信息加密应用有很大的前景.
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