Morpholine‐Substituted Rhodamine Analogue with Multi‐Configurational Switches for Optical Sensing of pH Gradient under Extreme Acidic Environments
Morpholine‐Substituted Rhodamine Analogue with Multi‐Configurational Switches for Optical Sensing of pH Gradient under Extreme Acidic Environments
复制标题
具有多配置开关的吗啉取代罗丹明类似物，用于极端酸性环境下 pH 梯度的光学传感
DOI：
10.1002/chem.202004254
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Sawada Daisuke
中科院分区：
文献类型：
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作者：
Koga Natsumi;Tanioka Masaru;Kamino Shinichiro;Sawada Daisuke
开发适用于先进分子技术的功能材料需要上级pH响应性分子。尽管已经被广泛开发，许多罗丹明基pH响应分子表现出单一的“开启”构型开关。在此，我们报道了一种新型的基于罗丹明的pH响应分子，具有多构型开关，显示稳定的两步结构和颜色转换响应pH。这种罗丹明类似物可以成功地应用于极端酸性环境下的pH梯度光学传感，无论是在溶液中还是在水凝胶上，通过高对比度的颜色变化。我们证明了这种多响应特性使不同pH信息的光学记忆成为可能。
Superior pH‐responsive molecules are required for the development of functional materials applicable to advanced molecular technologies. Despite having been widely developed, many rhodamine‐based pH‐responsive molecules exhibit a single configurational switch for “turn‐on”. Herein, we report a new type of rhodamine‐based pH‐responsive molecule with multi‐configurational switches displaying stable two‐step structural and color conversion in response to pH. This rhodamine analogue could be successfully applied to optical sensing of pH gradient under extreme acidic environments both in solution and on hydrogel through high‐contrast color change. We demonstrated that this multi‐responsive character enabled optical memory of different pH information.