Excited state dipole moments and lifetimes of 2-cyanoindole from rotationally resolved electronic Stark spectroscopy.
Excited state dipole moments and lifetimes of 2-cyanoindole from rotationally resolved electronic Stark spectroscopy.
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来自旋转分辨电子斯塔克光谱的 2-氰基吲哚的激发态偶极矩和寿命
DOI:
10.1039/d1cp00097g
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Michael Schmitt
中科院分区:
文献类型:
--
作者:
Marie-Luise Hebestreit;Hilda Lartian;Christian Henrichs;Ralf Kuehnemuth;W. Leo Meerts;Michael Schmitt
The permanent dipole moments of 2-cyanoindole (cyanoindole = CNI) in its ground and lowest excited singlet states have been determined from rotationally resolved electronic Stark spectroscopy under jet-cooled conditions. From the orientation of the transition dipole moment and the geometry changes upon electronic excitation the lowest excited singlet state could be shown to be of Lb-symmetry. The general statement, that the La-state has the larger permanent dipole moment of the two lowest excited singlet states, will be challenged in this contribution. On the basis of the different electronic nature of the first excited singlet state the behavior of 2-, 3-, 4- and 5-CNI is discussed. The excited state lifetime of isolated 2-CNI in the gas phase has been determined to be 9.4 ns. This value is compared to the excited state lifetime in ethyl acetate solution of 2.6 ns, which was quantified with a Strickler–Berg analysis. Using water as solvent shortens the 2-CNI lifetime to <40 ps. The reason for this drastic shortening is discussed in detail. Additionally, the rotationally resolved electronic spectrum of 2-CNI(1-d1) has been measured and analyzed.
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影响因子:
2.8
作者:
Ahreum Min;Ahreum Ahn;C. J. Moon;Ji Hoon Lee;M. Y. Choi;S. K. Kim
通讯作者:
S. K. Kim
影响因子:
3.8
作者:
Marie;Hilda Lartian;Michael Schneider;R. Kühnemuth;A. Y. Torres;S. Romero;José Arturo Ruiz;L. Álvarez;W. Meerts;M. Schmitt
通讯作者:
M. Schmitt
DOI:
10.1039/c8cp04020f
发表时间:
2018
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
Michael Schneider;Marie;M. Lindic;Hilda Parsian;A. Y. Torres;L. Álvarez;W. Meerts;R. Kühnemuth;M. Schmitt
通讯作者:
M. Schmitt
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
M. Schmitt;J. Küpper;D. Spangenberg;A. Westphal
通讯作者:
A. Westphal
影响因子:
2.8
作者:
Min, Ahreum;Moon, Cheol Joo;Choi, Myong Yong
通讯作者:
Choi, Myong Yong