Rate constants of quenching of the fluorescence of pterins by the iodide anion in aqueous solution
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 tha...
| Autores: | , , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2012 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/80999 |
| Acesso em linha: | http://hdl.handle.net/11336/80999 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Pterins Fluorescence Aqueous Solution Constants of Quenching https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Resumo: | 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. |
|---|