Back to Search Start Over

Dynamic response and discrimination of gaseous sarin using a boron‐difluoride complex film‐based fluorescence sensor.

Authors :
Zhou, Zhijie
Zhang, Lei
Peng, Lingya
Li, Yingjie
Zhu, Xiaolin
Wu, Yidi
Qiu, Zebiao
He, Gang
Qin, Molin
Peng, Haonan
Fang, Yu
Source :
Aggregate; Dec2024, Vol. 5 Issue 6, p1-9, 9p
Publication Year :
2024

Abstract

This study presents a novel boron‐difluoride complex‐based fluorescent nanofilm sensor capable of detecting sarin vapors in the environment by reporting an output fluorescence signal. The sensor's evaluation demonstrated an exceptionally low detection limit for sarin vapor, even in the presence of various interfering gases, with theoretical and practical limits of detection of 0.7 and 1 ppb, respectively. The sensor featured a rapid response time (less than 2 s), a broad linear detection range (1 ppb–1000 ppm), and superior selectivity for sarin vapor over a group of interfering analytes, outperforming existing sarin sensors. Mechanistic study indicates that the sensor's heightened sensitivity to sarin vapor is due to the robust affinity of nitrogen atoms within the core BODIQ unit for sarin. Additionally, the tetraphenylethylene structure with steric hindrance effectively inhibits the tight packing of BODIQ derivatives, and forms numerous microporous structures in the self‐assembled nanofilm, which are beneficial for the mass transfer, enhancing the sensor efficiency in detecting vapors. Furthermore, we have achieved the differentiation of sarin, diethyl chlorophosphate, and HCl vapor through the analysis of sensing kinetic. This fluorescent sensor opens new avenues for sustainable, low‐cost, and environment‐friendly portable devices, as well as for environmental monitoring and tracking applications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
27668541
Volume :
5
Issue :
6
Database :
Complementary Index
Journal :
Aggregate
Publication Type :
Academic Journal
Accession number :
181662483
Full Text :
https://doi.org/10.1002/agt2.629