Abstract
Two amphiphilic TPE E / Z isomers with aggregation induced emission (AIE) property have been synthesized and characterized. The logarithmic fluorescent intensity of the two molecules was in positive relationship with logarithmic viscosity of liquid. To note, the Z -TPE isomer exhibited more sensitivity in the viscosity of liquid sensing in comparison with the corresponding E -TPE counterpart (around 1.80 folds). Furthermore, two molecules could be used as fluorescent sensors for mechanical properties (viscosity and storage modulus) of hydrogel as well. In addition, two sensors displayed low cytotoxicity in normal tissue cell line (L929) within the concentration range of 2–10 µmol/L. These results potentially promised their applications as fluorescent sensors for mechanical properties in the fields of biological and biomedical. Amphiphilic tetraphenyl ethylene molecules (E-TPE and Z-TPE) realized fluorescent sensing of liquid viscosity and mechanical properties (viscosity and storage modulus).
Published Version
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