Triphenylamine indanedione as an AIE-based molecular sensor with one-step facile synthesis toward viscosity detection of liquids

• DOI: 10.1039/d2an00850e
• Publication Date: 2022-08-03T09:01:10Z
• Authors: Lingfeng Xu; Fangzhi Xiong; Minqing Kang; Yanrong Huang; Kui Wu
• Keywords: Triphenylamine; Stokes shift

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 novel molecular sensors, namely, DPBID DPTMID, were strategically constructed by triphenylamine indanedione derivates; rotatable conjugate structure was utilized as recognition site fluorescence quencher. This couple sensors synthesized one-step facile manner. DPTMID displayed longer emission wavelength larger Stokes shift (195 nm water, 138 glycerol) with narrower energy band. Moreover, exhibited high selectivity, sensitivity, significant signal enhancement higher viscous microenvironment. The sensor good photostability, universality various commercial liquids featured typical aggregation-induced (AIE). With aid thickening effects thickeners can captured. More importantly, explored visualize fluctuations during metamorphic stages liquids, it found microenvironment level closely related spoilage degree liquids. rapid detection, cheap equipment, fast results output food quality achieved through study.