A new method for evaluating the rate constants of chemical reactions has been developed based on the differential photoconversion efficiencies of photochromic FRET acceptors incorporated into molecules on both sides of a chemical equilibrium. In the application of Photochromic Relaxation Kinetics (pcRelKin) to a bimolecular binding reaction, one of the two interacting molecules bears a FRET donor and the second a photochromic acceptor. The close proximity required for FRET is achieved only in the complex. After photoconversion, the system exists in a thermo-dynamically asymmetric state, which relaxes according to first order kinetics. PcRelKin offers unique advantages over classical relaxation kinetics.
Documento: | Artículo |
Título: | Photochromic relaxation kinetics |
Autor: | Jovin, T.M.; Jares-Erijman, E.A. |
Filiación: | Department of Molecular Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany Departamento de Quimica Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina Department of Molecular Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, D-37077 Göttingen, Germany |
Palabras clave: | PcFRET; Photochromism; Relaxation kinetics; Molecular dynamics; Photochromism; Rate constants; Thermodynamics; Chemical equilibrium; Photochromic Relaxation Kinetics (PcFRET); Photoconversion efficiencies; Relaxation kinetics; Relaxation processes |
Año: | 2005 |
Volumen: | 430 |
Página de inicio: | 281 |
Página de fin: | 286 |
DOI: | http://dx.doi.org/10.1080/15421400590946514 |
Título revista: | Molecular Crystals and Liquid Crystals |
Título revista abreviado: | Mol. Cryst. Liq. Cryst. |
ISSN: | 15421406 |
CODEN: | MCLCD |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15421406_v430_n_p281_Jovin |