Advanced

Time-Resolved Interception of Multiple-Charge Accumulation in a Sensitizer–Acceptor Dyad

Mendes Marinho, Stéphanie; Ha-Thi, Minh Huong; Pham, Van Thai LU ; Quaranta, Annamaria; Pino, Thomas; Lefumeux, Christophe; Chamaillé, Thierry; Leibl, Winfried and Aukauloo, Ally (2017) In Angewandte Chemie - International Edition 56(50). p.15936-15940
Abstract

Biomimetic models that contain elements of photosynthesis are fundamental in the development of synthetic systems that can use sunlight to produce fuel. The critical task consists of running several rounds of light-induced charge separation, which is required to accumulate enough redox equivalents at the catalytic sites for the target chemistry to occur. Long-lived first charge-separated state and distinct electronic signatures for the sequential charge accumulated species are essential features to be able to track these events on a spectroscopic ground. Herein, we use a double-excitation nanosecond pump–pump–probe experiment to interrogate two successive rounds of photo-induced electron transfer on a molecular dyad containing a... (More)

Biomimetic models that contain elements of photosynthesis are fundamental in the development of synthetic systems that can use sunlight to produce fuel. The critical task consists of running several rounds of light-induced charge separation, which is required to accumulate enough redox equivalents at the catalytic sites for the target chemistry to occur. Long-lived first charge-separated state and distinct electronic signatures for the sequential charge accumulated species are essential features to be able to track these events on a spectroscopic ground. Herein, we use a double-excitation nanosecond pump–pump–probe experiment to interrogate two successive rounds of photo-induced electron transfer on a molecular dyad containing a naphthalene diimide (NDI) linked to a [Ru(bpy)3]2+ (bpy=bipyridine) chromophore by using a reversible electron donor. We report an unprecedented long-lived two-electron charge accumulation (t=200 μs).

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
electron transfer, energy conversion, molecular dyads, photosynthesis, time-resolved spectroscopy
in
Angewandte Chemie - International Edition
volume
56
issue
50
pages
5 pages
publisher
John Wiley & Sons
external identifiers
  • scopus:85037350540
  • wos:000417200600023
ISSN
1433-7851
DOI
10.1002/anie.201706564
language
English
LU publication?
yes
id
bc3d5317-d846-4a41-8f3b-c117bf2ed667
date added to LUP
2017-12-21 10:02:24
date last changed
2018-03-11 04:45:37
@article{bc3d5317-d846-4a41-8f3b-c117bf2ed667,
  abstract     = {<p>Biomimetic models that contain elements of photosynthesis are fundamental in the development of synthetic systems that can use sunlight to produce fuel. The critical task consists of running several rounds of light-induced charge separation, which is required to accumulate enough redox equivalents at the catalytic sites for the target chemistry to occur. Long-lived first charge-separated state and distinct electronic signatures for the sequential charge accumulated species are essential features to be able to track these events on a spectroscopic ground. Herein, we use a double-excitation nanosecond pump–pump–probe experiment to interrogate two successive rounds of photo-induced electron transfer on a molecular dyad containing a naphthalene diimide (NDI) linked to a [Ru(bpy)<sub>3</sub>]<sup>2+</sup> (bpy=bipyridine) chromophore by using a reversible electron donor. We report an unprecedented long-lived two-electron charge accumulation (t=200 μs).</p>},
  author       = {Mendes Marinho, Stéphanie and Ha-Thi, Minh Huong and Pham, Van Thai and Quaranta, Annamaria and Pino, Thomas and Lefumeux, Christophe and Chamaillé, Thierry and Leibl, Winfried and Aukauloo, Ally},
  issn         = {1433-7851},
  keyword      = {electron transfer,energy conversion,molecular dyads,photosynthesis,time-resolved spectroscopy},
  language     = {eng},
  month        = {12},
  number       = {50},
  pages        = {15936--15940},
  publisher    = {John Wiley & Sons},
  series       = {Angewandte Chemie - International Edition},
  title        = {Time-Resolved Interception of Multiple-Charge Accumulation in a Sensitizer–Acceptor Dyad},
  url          = {http://dx.doi.org/10.1002/anie.201706564},
  volume       = {56},
  year         = {2017},
}