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论文类型：会议论文

发表时间：2006-07-01

页面范围：1

关键字：化学传感器;比例荧光探针;镉离子

摘要：We report here a newly synthesized ratiometric fluorescent sensor for Cd2+, which can work under physiological pH range (HEPES, pH = 7.2) and was not influenced by high concentration of the physiologically abundant anion, including Na+, K+, Ca2+, and Mg2+. Furthermore, the emission wavelength of the senor was blue shifted 44 nm by Cd2+. On the contrary, the emission wavelength was red shifted 27 nm by Zn2+. The fluorescent titration with Cd2+ in the presence of some other heavy and transition metals shows that this chemosensor has higher selectivity to Cd2+ over Zn2+, Fe3+, Hg2+, Ni2+, Pb2+ and Ag+.