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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.49A [2010] >
IJC-A Vol.49A(12) [December 2010] >
| Title: | 2,7-Dichlorofluorescein, a fluorescent sensor to detect Cd2+ over Na+, K+, Ca2+, Cu2+, Ni2+ and Zn2+ |
| Authors: | Goswami, Priyanka
Baruah, Sukanya
Das, Diganta Kumar |
| Keywords: | Electrochemistry
Sensors
Fluorescence
Cadmium |
| Issue Date: | Dec-2010 |
| Publisher: | NISCAIR-CSIR, India |
| IPC Code: | Int. Cl.9 G01N21/64 |
| Abstract: | The intensity of the fluorescent emission
spectra of
2,7-dichlorofluorescein (510-640 nm) on excitation with 350 nm enhances on
interaction with Cd2+ ions. Minor enhancement is observed with Na+
and Zn2+ ions, while no enhancement at all in fluorescence is
observed with K+, Ca2+, Cu2+ and Ni2+.
The enhancement in the fluorescence is explained on the basis of photoinduced
electron transfer (PET) mechanism due to the binding of two Cd2+
ions to 2,7-dichlorofluorescein (log b = 3.80). |
| Page(s): | 1617-1620 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.49A(12) [December 2010]
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