Static and dynamic model for 4-aminodiphenyl fluorescence quenching by carbontetrachloride in hexane.


Journal Article

The fluorescence quenching of 4-aminodiphenyl (4ADP) with chloromethanes (CH2Cl2, CHCl3 and CCl4) have been studied in solvents of different polarity and viscosity. The quenching rate constants (kq) have been determined in all solvents. For CCl4 and CHCl3 quenching, the kq depends on solvent viscosity whereas for CH2Cl2, the kq values show a mixed trend with no clear-cut variation with either solvent polarity or solvent viscosity. Quenching mechanism involving an intermediate donor-acceptor complex formation is proposed for CH2Cl2 quenching. A positive deviation was observed in the Stern-Volmer (SV) plot for CCl4 quenching in hexane. The static-dynamic model could explain this.

Full Text

Cited Authors

  • Swaminathan, M; Radha, N

Published Date

  • July 1, 2004

Published In

Volume / Issue

  • 60 / 8-9

Start / End Page

  • 1839 - 1843

PubMed ID

  • 15248958

Pubmed Central ID

  • 15248958

Electronic International Standard Serial Number (EISSN)

  • 1873-3557

International Standard Serial Number (ISSN)

  • 1873-3557

Digital Object Identifier (DOI)

  • 10.1016/j.saa.2003.09.023


  • eng