On the photophysics of artificial blue-light photoreceptors: an ab initio study on a flavin-based dye dyad at the level of coupled-cluster response theory |
| |
Authors: | Sadeghian Keyarash Schütz Martin |
| |
Institution: | Institute of Physical and Theoretical Chemistry, University of Regensburg, Universit?tsstrasse 31, D-93040 Regensburg, Germany. |
| |
Abstract: | The photophysical behavior of a phenothiazine-phenyl-isoalloxazine dye dyad, a model system for blue-light photoreceptors functioning on the basis of photoinduced electron transfer, was investigated by employing a combination of time-dependent density functional and coupled-cluster response theory. A conical intersection between a "bright" locally excited and a "dark" charge-transfer state was found in the low-energy region of the corresponding potential energy surfaces. We propose that, for the solvated dyad, this conical intersection is responsible for the experimentally observed fast fluorescence quenching in that system. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|