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Design, synthesis and application of tetraphenylethene substituted chalcones as pH and Et3N indicators

Jing Zhang, Xudong Wu, Zhiyong Xing, and Zhi Li

Department of Materials Science and Engineering, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing, China



Received: 6 December 2022  Accepted: 25 March 2023


With outstanding AIE effect, TPE-substituted chalcone derivatives were widely used in the field of mechanochromic luminescent materials, chemical sensors, biosensing, etc. However, TPE-substituted chalcones which could function as pH indicator have not yet been reported until now. In this paper, three novel TPE-substituted chalcones were designed and synthesized as pH indicator for the first time. These TPE-substituted chalcones exhibited sensitive pH-chromic properties with continuous end points (pH = 9.77, 10.98 and 11.51 respectively). These pH indicators can be employed in fabrication of pH strips with higher accuracy compared to universal pH strips. Detection of Et3N can also be realized by these TPE-substituted chalcones with advantages in low cost, high sensitivity, easy-handle and real-time.

Keywords: TPE-substituted chalcone; pH indicator; pH strip; Et3N indicator; AIE

Full paper is available at

DOI: 10.1007/s11696-023-02799-z


Chemical Papers 77 (8) 4473–4487 (2023)

Wednesday, May 29, 2024

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