Exciting out-of-equilibrium states in macromolecules through light pumping
arXiv:2006.11008 · doi:10.1038/s41598-021-85856-5
Abstract
In the present paper we address the problem of the energy downconversion of the light absorbed by a protein into its internal vibrational modes. We consider the case in which the light receptors are fluorophores either naturally co-expressed with the protein or artificially covalently bound to some of its amino acids. In a recent work [Phys. Rev. X 8, 031061 (2018)], it has been experimentally found that by shining a laser light on the fluorophores attached to a protein the energy fed to it can be channeled into the normal mode of lowest frequency of vibration thus making the subunits of the protein coherently oscillate. Even if the phonon condensation phenomenon has been theoretically explained, the first step - the energy transfer from electronic excitation into phonon excitation - has been left open. The present work is aimed at filling this gap.
22 pages, 8 figures
References in corpus (5)
- Statistical mechanics and dynamics of solvable models with long-range interactions
- On the role of electrodynamic interactions in long-distance biomolecular recognition
- Memory Effects in Spin Chain Channels for Information Transmission
- Experimental detection of long-distance interactions between biomolecules through their diffusion behavior: Numerical study
- Detection of long-range electrostatic interactions between charged molecules by means of Fluorescence Correlation Spectroscopy