Facile synthesis of a water-soluble fluorescence sensor for Al3+ in aqueous solution and on paper substrate
Tianqi Liu1, Xuejuan Wan2, Yunsheng Dong3
1Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China; Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
Abstract:
In this study, a facile water-soluble fluorescence sensor 2-((2-hydroxybenzylidene)-amino)-2-(hydroxymethyl)propane-1,3-diol (ST) was synthesized via one-step reaction, and its fluorescence sensing performance for Al3+ both in aqueous solution and on paper substrate was evaluated. The results showed that ST exhibited an specific fluorescence "turn-on" response to Al3+ over other cations in aqueous solution as well as on the test paper. The limit of detection was found to be 3.2×10-7M, which revealed that the obtained Schiff-base based fluorescence chemosensor ST possessed a great potential for the rapid, quantitative and qualitative detection of Al3+.
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