Primed for Efficient Motion: Ultrafast Excited State Dynamics and Optical Manipulation of a Four Stage Rotary Molecular Motor

The Journal of Physical Chemistry. a
Theodore E WileyRoseanne J Sension

Abstract

All isomers of a four stage rotary molecular motor, dimethyl-tetrahydro-bi(cyclopenta[α]napthal-enylidene), are studied with ultrafast transient absorption spectroscopy. Single and two pulse excitations (pump and delayed repump with a different wavelength) are used to optically probe the excited state dynamics. These measurements demonstrate that this motor is not only designed for unidirectional isomerization, but is also "primed" for efficient rotary motion. The yield for photoisomerization from the stable P-cis isomer to the metastable M-trans isomer is 85% ± 10%, while the yield for the undesired back reaction is ca. 0.08 (+0.02, -0.05). The yield for photoisomerization from stable P-trans to the metastable M-cis isomer is ca. 85% ± 3% and the yield for the back reaction is 15% ± 3%. Excitation of P-trans in the lowest singlet state results in formation of a dark state on a 3.6 ps time scale and formation of the M-cis isomer on a ca. 12 ps time scale. Excitation of P-cis in the lowest singlet state results in formation of a dark state on ca. 13 ps time scale and formation of the M-trans isomer on a 71 ps time scale. Excitation of either isomer at 269 nm, higher in the excited state manifold, accesses additional excited stat...Continue Reading

References

May 1, 1982·Biophysical Journal·J F NagleR H Lozier
Dec 5, 2003·Journal of the American Chemical Society·Matthijs K J ter WielBen L Feringa
Jul 9, 2004·Biochimica Et Biophysica Acta·Ivo H M van StokkumRienk van Grondelle
Jan 26, 2008·Organic & Biomolecular Chemistry·Michael M PollardBen L Feringa
Mar 31, 2010·The Journal of Physical Chemistry. a·Andranik KazaryanMichael Filatov
Jun 22, 2012·Nature Chemistry·Jamie ConyardStephen R Meech
Jan 28, 2014·The Journal of Physical Chemistry. B·M QuickS A Kovalenko
Mar 29, 2014·The Journal of Organic Chemistry·Michael Filatov, Massimo Olivucci
Jun 12, 2014·Journal of the American Chemical Society·Jamie ConyardStephen R Meech
Oct 14, 2014·The Journal of Physical Chemistry. a·Cassandra L Ward, Christopher G Elles
Oct 18, 2012·The Journal of Physical Chemistry Letters·Cassandra L Ward, Christopher G Elles
Dec 17, 2015·The Journal of Physical Chemistry Letters·Alexander NikiforovMichael Filatov
Mar 11, 2016·The Journal of Physical Chemistry. B·Amanda L HoukChristopher G Elles
Apr 12, 2016·The Journal of Physical Chemistry Letters·Triet S NguyenJohn Parkhill
Nov 4, 2016·The Journal of Physical Chemistry. a·Saeed AmirjalayerSander Woutersen
Feb 22, 2017·The Journal of Physical Chemistry. a·Jamie ConyardStephen R Meech
Apr 21, 2017·Chemical Society Reviews·Salma KassemDavid A Leigh
May 11, 2017·Journal of the American Chemical Society·Christopher R HallStephen R Meech
Jun 20, 2017·Journal of the American Chemical Society·Jos C M KistemakerBen L Feringa
Oct 7, 2017·Journal of the American Chemical Society·Ilya N IoffeSergey A Kovalenko
Apr 11, 2018·Angewandte Chemie·Christopher R HallStephen R Meech
Jun 22, 2018·The Journal of Physical Chemistry. a·Jack Saltiel, Shipra Gupta
Jul 3, 2018·Chemical Communications : Chem Comm·Yuan WangRoman Boulatov

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Citations

Dec 24, 2018·Chemistry : a European Journal·Saeed Amirjalayer, Wybren Jan Buma
Mar 10, 2021·The Journal of Chemical Physics·Danielle L SoffermanRoseanne J Sension
Apr 20, 2021·The Journal of Physical Chemistry. B·Cody R AldazRoseanne J Sension
Sep 3, 2021·The Journal of Physical Chemistry. B·Danielle L SoffermanRoseanne J Sension

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