Report/Journal Article

PUBDB-2016-03703

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hydrogen bonds in excited state proton transfer

Horke, D. (First author)CFEL*DESY* ; Watts, H. M. ; Smith, A. D. ; Jager, E. ; Springate, E. ; Alexander, O. ; Cacho, C. ; Chapman, R. T. ; Minns, R. S. (Corresponding author)

2016
APS College Park, Md.

This record in other databases:        

Please use a persistent id in citations: doi:10.1103/PhysRevLett.117.163002

Report No.: arXiv:1712.05655

Abstract: Hydrogen bonding interactions between biological chromophores and their surrounding protein and solvent environment significantly affect the photochemical pathways of the chromophore and its biological function. A common first step in the dynamics of these systems is excited state proton transfer between the non-covalently bound molecules, which stabilises the system against dissociation and principally alters relaxation pathways. Despite such fundamental importance, studying excited state proton transfer across a hydrogen bond has proven difficult, leaving uncertainties about the mechanism. Through time-resolved photoelectron imaging measurements we demonstrate how the addition of a single hydrogen bond and the opening of an excited state proton transfer channel dramatically changes the outcome of a photochemical reaction, from rapid dissociation in the isolated chromophore, to efficient stabilisation and ground state recovery in the hydrogen bonded case, and uncover the mechanism of excited state proton transfer at a hydrogen bond, which follows sequential hydrogen and charge transfer processes.

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Contributing Institute(s):

1. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)
2. CFEL-CMI (FS-CFEL-CMI)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)

Experiment(s):

1. Experiments at CFEL
2. Measurement at external facility

Appears in the scientific report 2016

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint/Report Horke, D.CFEL*DESY* ; Watts, H. M. ; Smith, A. D. ; Jager, E. ; Springate, E. ; Alexander, O. ; Cacho, C. ; Chapman, R. T. ; Minns, R. S. (Corresponding author)
Hydrogen Bonds in Excited State Proton Transfer
College Park, Md. : APS (2016) [10.3204/PUBDB-2017-13720]2016     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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