Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy
Zhangrong Lou
1, 2
,
Yuqi Hou
1
,
Kepeng Chen
1
,
Jianzhang Zhao
1
,
Shaomin Ji
3
,
Fang-Fang Zhong
1
,
Yavuz Dede
4
,
Bernhard Dick
5
Тип публикации: Journal Article
Дата публикации: 2017-12-20
scimago Q1
wos Q3
БС1
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Краткое описание
It is well-known that the fluorescence of a chromophore can be efficiently quenched by the free rotor effect, sometimes called intramolecular rotation (IMR), i.e. by a large-amplitude torsional motion. Using this effect, aggregation induced enhanced emission (AIE) and fluorescent molecular probes for viscosity measurements have been devised. However, the rotor effect on triplet excited states was rarely studied. Herein, with molecular rotors of Bodipy and diiodoBodipy, and by using steady state and time-resolved transient absorption/emission spectroscopies, we confirmed that the triplet excited state of the Bodipy chromophore is not quenched by IMR. This is in stark contrast to the fluorescence (singlet excited state), which is significantly quenched by IMR. This result is rather interesting since a long-lived excited state (triplet, 276 μs) is not quenched by the IMR, but the short-lived excited state (singlet, 3.8 ns) is quenched by the same IMR. The unquenched triplet excited state of the Bodipy was us...
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Lou Z. et al. Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy // Journal of Physical Chemistry C. 2017. Vol. 122. No. 1. pp. 185-193.
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Lou Z., Hou Y., Chen K., Zhao J., Ji S., Zhong F., Dede Y., Dick B. Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy // Journal of Physical Chemistry C. 2017. Vol. 122. No. 1. pp. 185-193.
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TY - JOUR
DO - 10.1021/acs.jpcc.7b10466
UR - https://doi.org/10.1021/acs.jpcc.7b10466
TI - Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy
T2 - Journal of Physical Chemistry C
AU - Lou, Zhangrong
AU - Hou, Yuqi
AU - Chen, Kepeng
AU - Zhao, Jianzhang
AU - Ji, Shaomin
AU - Zhong, Fang-Fang
AU - Dede, Yavuz
AU - Dick, Bernhard
PY - 2017
DA - 2017/12/20
PB - American Chemical Society (ACS)
SP - 185-193
IS - 1
VL - 122
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2017_Lou,
author = {Zhangrong Lou and Yuqi Hou and Kepeng Chen and Jianzhang Zhao and Shaomin Ji and Fang-Fang Zhong and Yavuz Dede and Bernhard Dick},
title = {Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy},
journal = {Journal of Physical Chemistry C},
year = {2017},
volume = {122},
publisher = {American Chemical Society (ACS)},
month = {dec},
url = {https://doi.org/10.1021/acs.jpcc.7b10466},
number = {1},
pages = {185--193},
doi = {10.1021/acs.jpcc.7b10466}
}
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Lou, Zhangrong, et al. “Different Quenching Effect of Intramolecular Rotation on the Singlet and Triplet Excited States of Bodipy.” Journal of Physical Chemistry C, vol. 122, no. 1, Dec. 2017, pp. 185-193. https://doi.org/10.1021/acs.jpcc.7b10466.