Ultrafast Vibrational Spectroscopy of the Flavin Chromophore
Ultrafast time-resolved infrared (TRIR) spectra of flavin adenine dinucleotide (FAD) and the anion of lumiflavin (Lf-) are described. Ground-state recovery and excited-state decay of FAD reveal a common dominant ultrafast relaxation and a minor slower component. The Lf- transient lacks a fast compon...
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Published in | The journal of physical chemistry. B Vol. 110; no. 41; pp. 20107 - 20110 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
American Chemical Society
19.10.2006
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Subjects | |
Online Access | Get full text |
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Summary: | Ultrafast time-resolved infrared (TRIR) spectra of flavin adenine dinucleotide (FAD) and the anion of lumiflavin (Lf-) are described. Ground-state recovery and excited-state decay of FAD reveal a common dominant ultrafast relaxation and a minor slower component. The Lf- transient lacks a fast component. No intermediate species are observed, suggesting that the quenching mechanism is internal conversion promoted by interaction of the adenine and isoalloxazine rings in FAD. Modes are assigned, and the potential for extension of the TRIR method to photoactive proteins is discussed. |
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Bibliography: | ark:/67375/TPS-5V7LJRDT-Z istex:47D3467577EEF580EC923DAF449FE23EDC928086 SourceType-Other Sources-1 ObjectType-Article-2 content type line 63 ObjectType-Correspondence-1 |
ISSN: | 1520-6106 1520-5207 |
DOI: | 10.1021/jp0650735 |