Translational Diffusion and Unstable Conformer Trapping in Glassy Isopentane at 77 K

L. Zimányi, Sumesh B. Krishnan, Emily Williford, Shipra Gupta, Jonathan Sepulveda, Hadleigh Schwartz, Frank B. Mallory, Clelia W. Mallory, Olga Dmitrenko, Jack Saltiel

Research output: Contribution to journalArticle

Abstract

Diffusional quenching in isopentane (IP) glass at 77 K is demonstrated by the reduction of triphenylene phosphorescence lifetimes in the presence of 1,3-pentadiene and/or molecular oxygen. Fluorescence spectra and lifetimes of cis- A nd trans-1,2-di(1-methyl-2-naphthyl)ethene in IP glass at 77 K reveal that the cis → trans photoisomerization leads to the trapping of unstable conformers of the trans isomer. The claim that IP at 77 K is not sufficiently viscous to trap unstable photoproduct conformers is invalidated. ©

Original languageEnglish
JournalJournal of Physical Chemistry A
DOIs
Publication statusAccepted/In press - Jan 1 2019

Fingerprint

trapping
life (durability)
glass
phosphorescence
Photoisomerization
Glass
Phosphorescence
isomers
Molecular oxygen
quenching
traps
Isomers
fluorescence
Quenching
oxygen
Fluorescence
isopentane
triphenylene
1,3-pentadiene
ethylene

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Zimányi, L., Krishnan, S. B., Williford, E., Gupta, S., Sepulveda, J., Schwartz, H., ... Saltiel, J. (Accepted/In press). Translational Diffusion and Unstable Conformer Trapping in Glassy Isopentane at 77 K. Journal of Physical Chemistry A. https://doi.org/10.1021/acs.jpca.9b07964

Translational Diffusion and Unstable Conformer Trapping in Glassy Isopentane at 77 K. / Zimányi, L.; Krishnan, Sumesh B.; Williford, Emily; Gupta, Shipra; Sepulveda, Jonathan; Schwartz, Hadleigh; Mallory, Frank B.; Mallory, Clelia W.; Dmitrenko, Olga; Saltiel, Jack.

In: Journal of Physical Chemistry A, 01.01.2019.

Research output: Contribution to journalArticle

Zimányi, L, Krishnan, SB, Williford, E, Gupta, S, Sepulveda, J, Schwartz, H, Mallory, FB, Mallory, CW, Dmitrenko, O & Saltiel, J 2019, 'Translational Diffusion and Unstable Conformer Trapping in Glassy Isopentane at 77 K', Journal of Physical Chemistry A. https://doi.org/10.1021/acs.jpca.9b07964
Zimányi, L. ; Krishnan, Sumesh B. ; Williford, Emily ; Gupta, Shipra ; Sepulveda, Jonathan ; Schwartz, Hadleigh ; Mallory, Frank B. ; Mallory, Clelia W. ; Dmitrenko, Olga ; Saltiel, Jack. / Translational Diffusion and Unstable Conformer Trapping in Glassy Isopentane at 77 K. In: Journal of Physical Chemistry A. 2019.
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AU - Schwartz, Hadleigh

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