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A novel fluorescent indicator-based fluorene derivative for rapid and visual trace water sensing |
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| Authors: | Juan Chen Shengfeng Cui Jingwei Wan Meng Hu Yan Liu Hongmin Meng Wei Li Haifang Liu |
| Affiliation: | 1. Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, China;2. Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, China Contribution: Data curation, Formal analysis;3. Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, China Contribution: Writing - original draft;4. Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, China Contribution: Writing - review & editing;5. College of Chemistry, Zhengzhou University, Zhengzhou, China Contribution: Conceptualization, Data curation, Formal analysis;6. College of Chemistry, Zhengzhou University, Zhengzhou, China Contribution: Writing - review & editing;7. Henan Key Laboratory of Precision Diagnosis of Respiratory Infectious Diseases, Zhengzhou Key Laboratory of Precision Diagnosis of Respiratory Infectious Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China Contribution: Methodology |
| Abstract: | Fluorene nucleus derivatives show great potential for building outstanding fluorescence probes. In this paper, a novel fluorescent probe was developed by reacting with fluorene core with azacyclobutane, which exhibits typical solvation chromogenic effect in solvent. The fluorescence of the probe quenched in highly polar solvent. Based on this phenomenon, a novel fluorescence system for trace water was constructed. The response of this probe was fast (30 s) and sensitive for the detection of trace water in organic solvents, and the detection limit of water content in DMSO reached 0.13%. In addition, the probe can also be made as a test strip combined with homemade portable device and a smartphone for rapid detection of trace water. The luminescence mechanism of the probe is theoretically calculated based on time-contained density functional theory (TDDFT). To showcase its practicality, it has been applied for the detection of trace water in honey and alcohol by dipstick. This method provides a new idea for designing efficient fluorescent probes based on dipstick and mobile phone rapid detection. |
| Keywords: | fluorescence probes rapid detection test strip and smartphone trace water |