Reactive and unreactive pathways in a photochemical ring opening reaction from 2D femtosecond stimulated Raman

Physical Chemistry Chemical Physics : PCCP
David T ValleyRichard A Mathies

Abstract

Two-dimensional femtosecond stimulated Raman spectroscopy (2D-FSRS) is used to probe the structural evolution of a modified cyclohexadiene as it undergoes a photoinduced ring opening reaction. Analysis of the excited state stimulated Raman vibrational data reveals oscillations of the center frequencies and amplitudes of 21 high frequency modes. These oscillations in vibrational properties are due to anharmonic couplings between the high frequency finger print modes and the impulsively driven low frequency molecular distortions in the excited state. The largest anharmonic couplings, with intrinsic oscillation magnitudes of up to 40 cm(-1), are observed between the 467 cm(-1) C-C bend and the 1333 cm(-1) C-C stretch with the 191 cm(-1) methyl wag, all of which are centered on the reactive cyclohexadiene moiety. Conversely, motions located on the periphery - the 993 cm(-1) phenyl bend, the 1389 cm(-1) methyl bend and 1580 cm(-1) phenyl C-C stretch - are coupled with the 104 cm(-1) asymmetric bend. These couplings reveal two key energetic pathways: one leading to formation of the ring-opened product and the other reversion back to the ground state. This work is also important because it presents a new powerful method for measuring ...Continue Reading

References

Jan 5, 2002·Chemical Reviews·M. Irie
Dec 22, 2006·The Review of Scientific Instruments·David W McCamantRichard A Mathies
Nov 13, 2008·Annual Review of Physical Chemistry·Wesley R Browne, Ben L Feringa
Dec 17, 2008·Physical Chemistry Chemical Physics : PCCP·K KosmaW E Schmid
Nov 9, 2010·Annual Review of Physical Chemistry·Sanghamitra Deb, Peter M Weber
Mar 1, 2012·Physical Chemistry Chemical Physics : PCCP·David P Hoffman, Richard A Mathies
Mar 24, 2012·The Journal of Physical Chemistry. B·Tomotsumi FujisawaRichard A Mathies
May 11, 2013·The Journal of Physical Chemistry. B·Emily B DunkelbergerMartin T Zanni
Oct 10, 2013·Optics Express·David P HoffmanRichard A Mathies
Jun 3, 2014·The Journal of Physical Chemistry. B·Emanuele PontecorvoTullio Scopigno
Sep 23, 2014·The Journal of Chemical Physics·Brian P MoleskyAndrew M Moran
Oct 18, 2012·The Journal of Physical Chemistry Letters·Cassandra L Ward, Christopher G Elles

❮ Previous
Next ❯

Citations

Sep 22, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Giuseppe FumeroTullio Scopigno
Feb 26, 2016·The Journal of Physical Chemistry. a·B Jayachander RaoWolfgang Domcke
Mar 24, 2016·Accounts of Chemical Research·David P Hoffman, Richard A Mathies
Oct 3, 2015·The Journal of Chemical Physics·Zhenkun GuoAndrew M Moran
Aug 13, 2015·The Journal of Physical Chemistry Letters·David P HoffmanRichard A Mathies
Feb 27, 2016·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Daniel R Dietze, Richard A Mathies
Jul 28, 2016·The Journal of Chemical Physics·Brian P MoleskyAndrew M Moran
Oct 7, 2016·Physical Chemistry Chemical Physics : PCCP·I HamdiS Aloïse
Oct 12, 2018·Physical Chemistry Chemical Physics : PCCP·Maria Gabriella ChiarielloNadia Rega
Sep 16, 2019·The Journal of Chemical Physics·Thomas P Cheshire, Andrew M Moran
Jan 24, 2020·Physical Chemistry Chemical Physics : PCCP·Chana R HonickArthur E Bragg
Nov 17, 2016·The Journal of Chemical Physics·Brian P MoleskyAndrew M Moran
Aug 25, 2018·Topics in Current Chemistry·Tiago Buckup, Jérémie Léonard
Jun 4, 2020·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Hikaru SotomeHiroshi Miyasaka
Apr 21, 2021·Physical Chemistry Chemical Physics : PCCP·Selina JuberLars V Schäfer
Dec 14, 2016·Chemical Reviews·Tatu KumpulainenEric Vauthey
Aug 20, 2019·The Journal of Physical Chemistry. a·Matthew S BarclayChristopher G Elles
Sep 27, 2018·The Journal of Physical Chemistry. a·Timothy J QuincyChristopher G Elles

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.