AI Article Synopsis
- The study introduces new fluorophores containing benzothiadiazole and benzoselenadiazole groups for detecting trimethyl arsine vapor.
- The benzoselenadiazole-based fluorophore exhibited stronger bonding and led to quicker and more sensitive fluorescence responses compared to the benzothiadiazole variant.
- The developed sensor demonstrates a rapid response time (∼3 seconds), high sensitivity (lower detection limit of 0.44 ppb), and could be used in health and environmental monitoring, as well as arsenic detection in soil and mines.
Article Abstract
In this work, we report the design of novel fluorophores that bear three benzothiadiazole and benzoselenadiazole groups, respectively, for sensitive detection of trimethyl arsine vapor. In particular, the fluorophore with the benzoselenadiazole groups can form stronger chalcogen bonding with trimethyl arsine than the fluorophore with the benzothiadiazole groups, which in turn triggers much faster and more sensitive fluorescence responses. On the basis of this novel mechanism, fluorescence detection of trimethyl arsine vapor with rapid response (∼3 s), high sensitivity (the theoretical LOD is 0.44 ppb), and high selectivity is achieved on bundled nanofibers from the fluorophore with the benzoselenadiazole groups. Here, the new fluorescence sensor may find wide applications in health and environmental monitoring, arsenic distribution recognition in soil, and arsenic mines exploration.
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Article Synopsis
- The study introduces new fluorophores containing benzothiadiazole and benzoselenadiazole groups for detecting trimethyl arsine vapor.
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