Direct spectroscopic evidence of photoisomerization in para-methoxy methylcinnamate revealed by low-temperature matrix-isolation FTIR spectroscopy

Journal of Physical Chemistry Letters Volume 6 Issue 7 Page 1134-1139 published_at 2015-04-02
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Title ( eng )
Direct spectroscopic evidence of photoisomerization in para-methoxy methylcinnamate revealed by low-temperature matrix-isolation FTIR spectroscopy
Creator
Miyazaki Yasunori
Akai Nobuyuki
Source Title
Journal of Physical Chemistry Letters
Volume 6
Issue 7
Start Page 1134
End Page 1139
Abstract
The photoisomerization of para-methoxy methylcinnamate (p-MMC) has been studied by low-temperature matrix-isolation FTIR spectroscopy. In particular, the difference spectrum of mid-IR frequency region (1100-1800 cm-1) allows us to distinguish the structural change before and after ultraviolet (UV) light irradiation at ≥300 nm and to convince that the cis-isomer is produced from the trans-isomer by comparing with the calculated IR spectra. Additionally, a reversible isomerization of p-MMC is demonstrated upon a sequential irradiation with different wavelengths of UV light. These findings provide a new insight of the electronic excited state dynamics of p-MMC.
Descriptions
This is a preprint of an article published by American Chemical Society in Journal of Physical Chemistry Letters, 2015, available online: http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.5b00203.
This work is supported from Japan Society for the Promotion (JSPS) through a Grand-in-Aid project (No. 25410017).
NDC
Chemistry [ 430 ]
Language
eng
Resource Type journal article
Publisher
American Chemical Society
Date of Issued 2015-04-02
Rights
Copyright (c) 2015 American Chemical Society
Publish Type Author’s Original
Access Rights open access
Source Identifier
[DOI] 10.1021/acs.jpclett.5b00203
[PMID] 26262962
[DOI] http://dx.doi.org/10.1021/acs.jpclett.5b00203 isVersionOf