INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Rate constants of quenching of the fluorescence of pterins by the iodide anion in aqueous solution
Autor/es:
SRIDHAR SWARNA; CAROLINA LORENTE; ANDRÉS H. THOMAS; CHRISTOPHER B. MARTIN
Revista:
CHEMICAL PHYSICS LETTERS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 542 p. 62 - 65
ISSN:
0009-2614
Resumen:
The fluorescence of various pterins (6-methylpterin, 6-hydroxymethylpterin, 6-formylpterin, and 6-carboxypterin) was quenched using iodide in neutral, aerated neutral phosphate buffer. Stern-Volmer plots and the fluorescence lifetimes were used to determine fluorescence quenching rate constants that approach the rate of diffusion. Given that pterin photoproducts have been detected in the human skin exposed to UV radiation, biological implications of the high rate constants are discussed.
