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  3. Fluorescence quenching of Rhodamine B base by two amines

Fluorescence quenching of Rhodamine B base by two amines

  • Spectrochim Acta A Mol Biomol Spectrosc. 2013 Mar 15:105:557-62. doi: 10.1016/j.saa.2012.11.091.
S Bakkialakshmi 1,  P Selvarani,  S Chenthamarai
Affiliations

Affiliation

  • 1 Department of Physics, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India. bakkialakshmis@rocketmail.com
PMID: 23353689 DOI: 10.1016/j.saa.2012.11.091
Abstract

Fluorescence quenching of Rhodamine B base (RhB) in DMF solution has been studied at different concentrations of the amine Triethyl amine (TEA) and n-butyl amine (NBA) at room temperature. It has been observed that the fluorescence intensity of RhB decrease with increase in the concentration of the TEA and NBA. It has been observed that the quenching due to amines proceeds via dynamic quenching process. The rate constants for the quenching process have been calculated using Stern-Volmer equation. Time resolved fluorescence study and (1)H NMR spectral study have also been carried out and discussed.

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