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Proceedings Paper

Controlling electron transfer in condensed phase with bond-specific infrared excitation
Author(s): Milan Delor; Paul A. Scattergood; Igor V. Sazanovich; Theo Keane; Gregory M. Greetham; Anthony J. H. M. Meijer; Michael Towrie; Anthony W. Parker; Julia A. Weinstein
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Paper Abstract

Using an ultrafast electronic-vibrational pulse-sequence, we show that the outcome of light-induced ET can be radically altered by mode-specific infrared (IR) excitation of vibrations which are coupled to the ET-pathway. IR-control is particularly challenging in condensed phase systems due to the ultrafast timescales involved, in particular rapid intramolecular vibrational redistribution. We demonstrate how an IR-pulse following UV-excitation perturbs nuclear-electronic (vibronic) interactions within a donor-bridge-acceptor system similar in design to those utilized in (bio)chemical light-harvesting, and alters charge-transport pathways and product state yields.

Paper Details

Date Published: 10 September 2015
PDF: 6 pages
Proc. SPIE 9549, Physical Chemistry of Interfaces and Nanomaterials XIV, 95490U (10 September 2015); doi: 10.1117/12.2189056
Show Author Affiliations
Milan Delor, Univ. of Sheffield (United Kingdom)
Paul A. Scattergood, Univ. of Sheffield (United Kingdom)
Igor V. Sazanovich, Univ. of Sheffield (United Kingdom)
STFC Central Laser Facility (United Kingdom)
Theo Keane, Univ. of Sheffield (United Kingdom)
Gregory M. Greetham, STFC Central Laser Facility (United Kingdom)
Anthony J. H. M. Meijer, Univ. of Sheffield (United Kingdom)
Michael Towrie, STFC Central Laser Facility (United Kingdom)
Anthony W. Parker, STFC Central Laser Facility (United Kingdom)
Julia A. Weinstein, Univ. of Sheffield (United Kingdom)

Published in SPIE Proceedings Vol. 9549:
Physical Chemistry of Interfaces and Nanomaterials XIV
Sophia C. Hayes; Eric R. Bittner, Editor(s)

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