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Triphenylamine indanedione as an AIE-based molecular sensor with one-step facile synthesis toward viscosity detection of liquids
Analyst ( IF 3.6 ) Pub Date : 2022-08-03 , DOI: 10.1039/d2an00850e Lingfeng Xu 1, 2 , Fangzhi Xiong 1 , Minqing Kang 1 , Yanrong Huang 3 , Kui Wu 4
Analyst ( IF 3.6 ) Pub Date : 2022-08-03 , DOI: 10.1039/d2an00850e Lingfeng Xu 1, 2 , Fangzhi Xiong 1 , Minqing Kang 1 , Yanrong Huang 3 , Kui Wu 4
Affiliation
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Viscosity is one of the most important physical parameters in a liquid, noninvasive, and effective viscosity inspection method toward liquid safety that needs to be developed urgently. In this study, two kinds of novel molecular sensors, namely, DPBID and DPTMID, were strategically constructed by the triphenylamine indanedione derivates; the rotatable conjugate structure was utilized as the recognition site and fluorescence quencher. This couple of molecular sensors was synthesized in a one-step facile manner. DPTMID displayed longer emission wavelength and larger Stokes shift (195 nm in water, 138 nm in glycerol) with a narrower energy band. Moreover, DPTMID exhibited high selectivity, sensitivity, and significant fluorescence signal enhancement toward a higher viscous microenvironment. The molecular sensor displayed good photostability, selectivity, and universality in various commercial liquids and featured with typical aggregation-induced emission (AIE). With the aid of DPTMID, the thickening effects of liquid thickeners can be captured. More importantly, DPTMID was explored to visualize the viscosity fluctuations during the metamorphic stages of liquids, and it was found that the microenvironment viscosity level is closely related to the spoilage degree of liquids. The method with rapid detection, high sensitivity, cheap equipment, and fast results output toward food quality and safety inspection can be achieved through this study.
中文翻译：
三苯胺茚满二酮作为基于 AIE 的分子传感器，具有一步简便合成的液体粘度检测
粘度是液体中最重要的物理参数之一，对液体安全性的无创有效的粘度检测方法亟待开发。本研究利用三苯胺茚满二酮衍生物战略性地构建了DPBID和DPTMID两种新型分子传感器；可旋转的共轭结构用作识别位点和荧光猝灭剂。这对分子传感器是以一步简单的方式合成的。DPTMID显示更长的发射波长和更大的斯托克斯位移（水中 195 nm，甘油中 138 nm），能带更窄。此外，DPTMID对更高粘性的微环境表现出高选择性、灵敏度和显着的荧光信号增强。该分子传感器在各种商业液体中表现出良好的光稳定性、选择性和通用性，并具有典型的聚集诱导发射（AIE）特征。在DPTMID的帮助下，可以捕捉液体增稠剂的增稠效果。更重要的是，探索DPTMID可视化液体变质阶段的粘度波动，发现微环境粘度水平与液体的腐败程度密切相关。通过本研究可以实现检测快速、灵敏度高、设备便宜、结果输出快的食品质量安全检测方法。
更新日期：2022-08-03
中文翻译：
三苯胺茚满二酮作为基于 AIE 的分子传感器，具有一步简便合成的液体粘度检测
粘度是液体中最重要的物理参数之一，对液体安全性的无创有效的粘度检测方法亟待开发。本研究利用三苯胺茚满二酮衍生物战略性地构建了DPBID和DPTMID两种新型分子传感器；可旋转的共轭结构用作识别位点和荧光猝灭剂。这对分子传感器是以一步简单的方式合成的。DPTMID显示更长的发射波长和更大的斯托克斯位移（水中 195 nm，甘油中 138 nm），能带更窄。此外，DPTMID对更高粘性的微环境表现出高选择性、灵敏度和显着的荧光信号增强。该分子传感器在各种商业液体中表现出良好的光稳定性、选择性和通用性，并具有典型的聚集诱导发射（AIE）特征。在DPTMID的帮助下，可以捕捉液体增稠剂的增稠效果。更重要的是，探索DPTMID可视化液体变质阶段的粘度波动，发现微环境粘度水平与液体的腐败程度密切相关。通过本研究可以实现检测快速、灵敏度高、设备便宜、结果输出快的食品质量安全检测方法。
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