张宇玉, 于敬华, 张守鑫, 孔景临*, 刘太宏*, 丁立平. 防化研究, 2025, 4 (5), 26-36. DOI: 10.20179/ j.cnki.fhyj.2025.05.003

Precise detection capabilities of chemical sensors and development of portable detection equipment are of great significance for the rapid detection and emergency response to nerve agents. Herein, two Schiff base-type fluorophores, TCNB and TPE-33-BD based on tetraphenylethylene, were synthesized and optimized properly. Their photophysical properties were systematically examined, and sensing capabilities for nerve agent simulants were comprehensively evaluated. The results indicated that the theoretical detection limits of the TCNB and TPE-33-BD for the nerve agent simulant diethyl chlorophosphate (DCP) were as low as 1.06 mg/m³ and 0.47 mg/m³, respectively. With the merits of high sensitivity, cross-reactive responses and easy miniaturization, a film-based fluorescent sensor array was constructed, which achieved sensitive, rapid, and selective detection of DCP vapor with a response time of less than 1.0 second and over 50 reusability cycles. Moreover, through dynamic data acquisition and cross-reactive signal processing, the accuracy and discrimination ability of the sensor array were significantly enhanced. The study could provide references for developing portable chemical agent detection equipment.

Figure 1. (a) Molecular structures and optical characteristics of the fluorophores TPE-33-BD and TCNB; (b) Discrimination performance of binary thin-film fluorescence sensor arrays for DCP, HCl, HAc, etc.

First Author: Zhang Yuyu, Master’s student, Shaanxi Normal University

Correspondence Authors: Assoc. Prof. Liu Taihong, Shaanxi Normal University; Prof. Kong Jinglin, State Key Laboratory of Chemistry for NBC Hazards Protection

Full Text Link: https://journal.mlpla.mil.cn/fhyj/article/doi/10.20179/j.cnki.fhyj.2025.05.003