1. An isocamphanyl-based fluorescent "turn-on" probe for highly sensitive and selective detection of Ga3+ and application in vivo and in vitro.
- Author
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Yang, Lijuan, Li, Mingxin, Wang, Yunyun, Zhang, Yan, Liu, Zhipeng, Ruan, Shutang, Wang, Zhonglong, and Wang, Shifa
- Subjects
LOGIC circuits ,CONDENSATION reactions ,BINDING constant ,FLUORESCENT probes ,METAL ions - Abstract
A novel fluorescent probe 2-(4-(diethylamino)-2-hydroxybenzylidene)-N-(2,3,3-trimethylbicyclo[2.2.1]heptan-2-yl)hydrazinecarbothioamide (HT) was prepared in this study by a condensation reaction. HT has been confirmed to possess high specificity toward Ga
3+ over other metal ions (including Al3+ and In3+ ) via a distinct fluorescence light-up response. Moreover, HT exhibited good detection performances for Ga3+ including high selectivity, excellent anti-interference ability, a wide working pH range, and good reversibility. The association constant and limit of detection (LOD) were calculated to be 5.34 × 103 M−1 and 1.18 × 10−6 M, respectively. The detection mechanism of HT toward Ga3+ was proposed and confirmed by1 H NMR analysis, HRMS analysis, and DFT calculations. A simple test strip-based portable detecting device and a molecular INHIBIT logic circuit were established for improving its practical applicability. Furthermore, the desirable sensing performance of HT for Ga3+ was successfully reconfirmed in MCF-7 cells and zebrafish. [ABSTRACT FROM AUTHOR]- Published
- 2021
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