期刊
JOURNAL OF FLUORESCENCE
卷 23, 期 3, 页码 495-501出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-013-1169-y
关键词
Chemosensors; Rhodamine B; Cations; Static quenching; Living cells
资金
- DST, Govt. of India [SR/FT/CS-047/2008]
A rhodamine B-based fluorescence probe (1) for the sensitive and selective detection of Cu2+ ion has been designed and synthesized using pyridine moiety. The optical properties of this compound have been investigated in acetonitrile-water binary solution (7:3 v/v). Compound 1 is found to be an excellent sensor for a biologically/physiologically very important transition metal ion (Cu2+) using only the two very different modes of measurements (absorption and emission); one case displayed intensity enhancement whereas in other case showed intensity depletion (quenching). A mechanistic investigation has been performed to explore the static nature of quenching process. The sensor has been found to be very effective in sensing Cu2+ ion inside living cells also.
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