Tetrahedron Letters p. 2560 - 2565 (2017)
Update date:2022-08-17
Topics:
Jiang, Cuicui
Wang, Mian
Wang, Yanxiu
Tang, Xiuneng
Zhang, Yamin
Zhang, Hui
Ma, Lin
Wang, Jianyi
Two low cytotoxic fluorescence probes Rb1 and Rb2 detecting Fe3+ were synthesized and evaluated. Rb1 and Rb2 exhibited an excellent selectivity to Fe3+, which was not disturbed by Ag+, Li+, K+, Na+, NH4+, Fe2+, Pb2+, Ba2+, Cd2+, Ni2+, Co2+, Mn2+, Zn2+, Mg2+, Hg2+, Ca2+, Cu2+, Ce3+, AcO?, Br?, Cl?, HPO42?, HSO3?, I?, NO3?, S2O32?, SO32? and SO42? ions. The detection limits were 1.87?×?10?7?M for Rb1 and 5.60?×?10?7?M for Rb2, respectively. 1:1 stoichiometry and 1:2 stoichiometry were the most likely recognition mode of Rb1 or Rb2 towards Fe3+, and the corresponding OFF–ON fluorescence mechanisms of Rb1 and Rb2 were proposed.
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