Ultrafast charge transfer dynamics in supramolecular Pt(II) donor-bridge-acceptor assemblies

The effect of vibronic coupling

Paul A. Scattergood, Milan Delor, Igor V. Sazanovich, Michael Towrie, Julia A. Weinstein

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Thanks to major advances in laser technologies, recent investigations of the ultrafast coupling of nuclear and electronic degrees of freedom (vibronic coupling) have revealed that such coupling plays a crucial role in a wide range of photoinduced reactions in condensed phase supramolecular systems. This paper investigates several new donor-bridge-acceptor charge-transfer molecular assemblies built on a trans-Pt(ii) acetylide core. We also investigate how targeted vibrational excitation with low-energy IR light post electronic excitation can perturb vibronic coupling and affect the efficiency of electron transfer (ET) in solution phase. We compare and contrast properties of a range of donor-bridge-acceptor Pt(ii) trans-acetylide assemblies, where IR excitation of bridge vibrations during UV-initiated charge separation in some cases alters the yields of light-induced product states. We show that branching to multiple product states from a transition state with appropriate energetics is the most rigid condition for the type of vibronic control we demonstrate in our study.

Original languageEnglish
Pages (from-to)69-86
Number of pages18
JournalFaraday Discussions
Volume185
DOIs
Publication statusPublished - 2015

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assemblies
Charge transfer
charge transfer
excitation
polarization (charge separation)
products
electronics
Infrared radiation
electron transfer
Electrons
Lasers
degrees of freedom
vibration
lasers
energy

Cite this

Scattergood, Paul A. ; Delor, Milan ; Sazanovich, Igor V. ; Towrie, Michael ; Weinstein, Julia A. / Ultrafast charge transfer dynamics in supramolecular Pt(II) donor-bridge-acceptor assemblies : The effect of vibronic coupling. In: Faraday Discussions. 2015 ; Vol. 185. pp. 69-86.
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Ultrafast charge transfer dynamics in supramolecular Pt(II) donor-bridge-acceptor assemblies : The effect of vibronic coupling. / Scattergood, Paul A.; Delor, Milan; Sazanovich, Igor V.; Towrie, Michael; Weinstein, Julia A.

In: Faraday Discussions, Vol. 185, 2015, p. 69-86.

Research output: Contribution to journalArticle

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