Ultrafast Excited State Dynamics in a First Generation Photomolecular Motor.
coherence
excited state
fluorescence
molecular motor
photochemistry
ultrafast dynamics
Journal
Chemphyschem : a European journal of chemical physics and physical chemistry
ISSN: 1439-7641
Titre abrégé: Chemphyschem
Pays: Germany
ID NLM: 100954211
Informations de publication
Date de publication:
02 04 2020
02 04 2020
Historique:
received:
12
12
2019
revised:
17
01
2020
pubmed:
25
1
2020
medline:
25
1
2020
entrez:
25
1
2020
Statut:
ppublish
Résumé
Efficient photomolecular motors will be critical elements in the design and development of molecular machines. Optimisation of the quantum yield for photoisomerisation requires a detailed understanding of molecular dynamics in the excited electronic state. Here we probe the primary photophysical processes in the archetypal first generation photomolecular motor, with sub-50 fs time resolved fluorescence spectroscopy. A bimodal relaxation is observed with a 100 fs relaxation of the Franck-Condon state to populate a red-shifted state with a reduced transition moment, which then undergoes multi-exponential decay on a picosecond timescale. Oscillations due to the excitation of vibrational coherences in the S
Identifiants
pubmed: 31975490
doi: 10.1002/cphc.201901179
pmc: PMC7187380
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
594-599Subventions
Organisme : EPSRC
ID : EP/R042357/1
Pays : International
Organisme : EPSRC
ID : EP/J009148/1
Pays : International
Organisme : European Research Council
ID : 694345
Pays : International
Organisme : Ministry of Education, Culture and Science
ID : 024.001.035
Pays : International
Organisme : Center for Information Technology of the University of Groningen
Pays : International
Informations de copyright
© 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.
Références
J Am Chem Soc. 2014 Jul 9;136(27):9692-700
pubmed: 24918780
J Phys Chem B. 2009 Feb 12;113(6):1623-31
pubmed: 19146438
J Am Chem Soc. 2003 Dec 10;125(49):15076-86
pubmed: 14653742
J Am Chem Soc. 2019 May 8;141(18):7622-7627
pubmed: 31017421
J Am Chem Soc. 2017 May 31;139(21):7408-7414
pubmed: 28486804
Chem Commun (Camb). 2019 Oct 17;55(84):12595-12602
pubmed: 31580358
J Phys Chem A. 2018 Sep 27;122(38):7548-7558
pubmed: 30230333
Nature. 1999 Sep 9;401(6749):152-5
pubmed: 10490022
Angew Chem Int Ed Engl. 2018 May 22;57(21):6203-6207
pubmed: 29633492
Chem Soc Rev. 2009 Jun;38(6):1542-50
pubmed: 19587950
J Am Chem Soc. 2008 Aug 13;130(32):10484-5
pubmed: 18636709
J Chem Theory Comput. 2011 Jul 12;7(7):2189-99
pubmed: 26606488
Angew Chem Int Ed Engl. 2007;46(1-2):72-191
pubmed: 17133632
J Phys Chem A. 2013 Feb 21;117(7):1400-5
pubmed: 23374075
Nat Chem. 2012 May 06;4(7):547-51
pubmed: 22717439
Chemphyschem. 2020 Apr 2;21(7):594-599
pubmed: 31975490
Chem Soc Rev. 2017 May 9;46(9):2592-2621
pubmed: 28426052
J Phys Chem A. 2009 Oct 29;113(43):11630-4
pubmed: 19627111
J Am Chem Soc. 2002 May 8;124(18):5037-51
pubmed: 11982368
Acc Chem Res. 2001 Jun;34(6):504-13
pubmed: 11412087
Org Biomol Chem. 2008 Feb 7;6(3):507-12
pubmed: 18219421
Annu Rev Phys Chem. 2009;60:407-28
pubmed: 18999995
Chem Soc Rev. 2012 Jan 7;41(1):19-30
pubmed: 22116531
Proc Natl Acad Sci U S A. 2018 Sep 18;115(38):9423-9431
pubmed: 29712825
J Phys Chem A. 2017 Mar 16;121(10):2138-2150
pubmed: 28218530
J Phys Chem A. 2010 Apr 22;114(15):5058-67
pubmed: 20349978