Issue 23, 2019

Room temperature quantum coherence vs. electron transfer in a rhodanine derivative chromophore

Abstract

Understanding electron transfer in organic molecules is of great interest in quantum materials for light harvesting, energy conversion and integration of molecules into solar cells. This, however, poses the challenge of designing specific optimal molecular structure for which the processes of ultrafast quantum coherence and electron transport are not so well understood. In this work, we investigate subpicosecond time scale quantum dynamics and electron transfer in an efficient electron acceptor rhodanine chromophoric complex. We consider an open quantum system approach to model the complex–solvent interaction, and compute the crossover from weak to strong dissipation on the reduced system dynamics for both a polar (methanol) and a non polar solvent (toluene). We show that the electron transfer rates are enhanced in the strong chromophore–solvent coupling regime, being the highest transfer rates those found at room temperature. Even though the computed dynamics are highly non-Markovian, and they may exhibit a quantum character up to hundreds of femtoseconds, we show that quantum coherence does not necessarily optimise the electron transfer in the chromophore.

Graphical abstract: Room temperature quantum coherence vs. electron transfer in a rhodanine derivative chromophore

Article information

Article type
Paper
Submitted
12 mar 2019
Accepted
23 máj 2019
First published
30 máj 2019

Phys. Chem. Chem. Phys., 2019,21, 12640-12648

Room temperature quantum coherence vs. electron transfer in a rhodanine derivative chromophore

D. Madrid-Úsuga, C. E. Susa and J. H. Reina, Phys. Chem. Chem. Phys., 2019, 21, 12640 DOI: 10.1039/C9CP01398A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements