Journal
TETRAHEDRON
Volume 69, Issue 37, Pages 7981-7987Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2013.07.007
Keywords
Non-sulfur; Fluorescent; Phenazine; Mercury ions; Recyclable; Test kits
Categories
Funding
- National Natural Science Foundation of China [21064006, 21262032, 21161018]
- Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China [IRT1177]
- Natural Science Foundation of Gansu Province [1010RJZA018]
- Youth Foundation of Gansu Province [2011GS04735]
- [NWNU-LKQN-11-32]
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A series of non-sulfur, fluorescent sensors (S-6, S6-1 or S6-2) for mercury ions bearing 1H-imidazo[4,5-b]phenazine derivatives have been designed and synthesized. Among these sensors, a furan group into the sensor S-6 molecule was as the functional group, compound S6-1 containing the 5-(4-Nitrophenyl)-2-furan group was synthesized, and in order to establish the furan group's contribution to the sensor's fluorescent sensing abilities, compound S6-2, which without containing the furan group was also synthesized. S-6 showed excellent fluorescent specific selectivity and high sensitivity for Hg2+ in aqueous solution. The detection limit of the sensor towards Hg2+ is 1.6x10(-7) M, and other ions, including Fe3+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn2+, Cr3+, and Mg2+ had nearly no influence on the probing behavior. Notably, this sensor serves as a recyclable component in sensing materials. The test strips based on S-6 were fabricated, which could act as a convenient and efficient Hg2+ test kits. (C) 2013 Elsevier Ltd. All rights reserved.
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