Journal of Physical Chemistry A, volume 123, issue 46, pages 10011-10018
Quantifying Triplet State Formation in Zinc Dipyrrin Complexes.
1
Department of Chemistry, East Tennessee State University, Johnson City, Tennessee 37614, United States
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Publication type: Journal Article
Publication date: 2019-10-30
Journal:
Journal of Physical Chemistry A
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor: 2.9
ISSN: 10895639, 15205215
Physical and Theoretical Chemistry
Abstract
Photocatalysis is a promising method to harness solar energy and use it to form fuels and other high value chemicals, but most sensitizers used in photocatalytic reactions are complexes of rare and expensive metals such as ruthenium and iridium. Zinc dipyrromethene complexes have potential to be a more earth-abundant alternative, but their photophysical properties are largely unexplored. In this study, triplet state formation was quantified in two zinc dipyrromethene complexes, with a and without heavy atoms, by transient absorption spectroscopy. Without heavy atoms the triplet quantum yield was 16% in toluene and 27% in THF. With the addition of heavy I atoms the triplet quantum yield is increased to 62-63% and is insensitive to solvent polarity. The fact that in the absence of heavy atoms the triplet yield in is affected by solvent polarity and in the presence of heavy atoms it is not suggests that triplet formation occurs through different pathways it the two complexes. These triplet yields meet or exceed those of successful organic photosensitizers, illustrating the potential for zinc dipyrromethene complexes as photosensitizers.
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Citations by publishers
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Elsevier
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Elsevier
1 publication, 20%
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Frontiers Media S.A.
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Multidisciplinary Digital Publishing Institute (MDPI)
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American Chemical Society (ACS)
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American Chemical Society (ACS)
1 publication, 20%
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Royal Society of Chemistry (RSC)
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Royal Society of Chemistry (RSC)
1 publication, 20%
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1
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Alqahtani N. Z., Blevins T. G., Mccusker C. E. Quantifying Triplet State Formation in Zinc Dipyrrin Complexes. // Journal of Physical Chemistry A. 2019. Vol. 123. No. 46. pp. 10011-10018.
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Alqahtani N. Z., Blevins T. G., Mccusker C. E. Quantifying Triplet State Formation in Zinc Dipyrrin Complexes. // Journal of Physical Chemistry A. 2019. Vol. 123. No. 46. pp. 10011-10018.
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TY - JOUR
DO - 10.1021/acs.jpca.9b08682
UR - https://doi.org/10.1021%2Facs.jpca.9b08682
TI - Quantifying Triplet State Formation in Zinc Dipyrrin Complexes.
T2 - Journal of Physical Chemistry A
AU - Alqahtani, Norah Z
AU - Blevins, Toni G
AU - Mccusker, Catherine E
PY - 2019
DA - 2019/10/30 00:00:00
PB - American Chemical Society (ACS)
SP - 10011-10018
IS - 46
VL - 123
SN - 1089-5639
SN - 1520-5215
ER -
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@article{2019_Alqahtani,
author = {Norah Z Alqahtani and Toni G Blevins and Catherine E Mccusker},
title = {Quantifying Triplet State Formation in Zinc Dipyrrin Complexes.},
journal = {Journal of Physical Chemistry A},
year = {2019},
volume = {123},
publisher = {American Chemical Society (ACS)},
month = {oct},
url = {https://doi.org/10.1021%2Facs.jpca.9b08682},
number = {46},
pages = {10011--10018},
doi = {10.1021/acs.jpca.9b08682}
}
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Alqahtani, Norah Z., et al. “Quantifying Triplet State Formation in Zinc Dipyrrin Complexes..” Journal of Physical Chemistry A, vol. 123, no. 46, Oct. 2019, pp. 10011-10018. https://doi.org/10.1021%2Facs.jpca.9b08682.