Laser pulse trains for controlling excited state dynamics of adenine in water.
Laser pulse trains for controlling excited state dynamics of adenine in water.
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用于控制水中腺嘌呤激发态动力学的激光脉冲串
DOI:
10.1039/c2cp24002e
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
R. Mitrić
中科院分区:
文献类型:
--
作者:
J. Petersen;M. Wohlgemuth;B. Sellner;V. Bonačić-Koutecký;H. Lischka;R. Mitrić
We investigate theoretically the control of the ultrafast excited state dynamics of adenine in water by laser pulse trains, with the aim to extend the excited state lifetime and to suppress nonradiative relaxation processes. For this purpose, we introduce the combination of our field-induced surface hopping method (FISH) with the quantum mechanical–molecular mechanical (QM/MM) technique for simulating the laser-driven dynamics in the condensed phase under explicit inclusion of the solvent environment. Moreover, we employ parametric pulse shaping in the frequency domain in order to design simplified laser pulse trains allowing to establish a direct link between the pulse parameters and the controlled dynamics. We construct pulse trains which achieve a high excitation efficiency and at the same time keep a high excited state population for a significantly extended time period compared to the uncontrolled dynamics. The control mechanism involves a sequential cycling of the population between the lowest and higher excited states, thereby utilizing the properties of the corresponding potential energy surfaces to avoid conical intersections and thus to suppress the nonradiative decay to the ground state. Our findings provide a means to increase the fluorescence yield of molecules with an intrinsically very short excited state lifetime, which can lead to novel applications of shaped laser fields in the context of biosensing.
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3.4
作者:
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通讯作者:
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影响因子:
8.6
作者:
DenHartog Ea;O'Brian Tr;J. Lawler
通讯作者:
J. Lawler
影响因子:
2.9
作者:
R. Mitrić;J. Petersen;Matthias Wohlgemuth;U. Werner;V. Bonačić‐Koutecký;L. Wöste;J. Jortner
通讯作者:
J. Jortner
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
S. Patchkovskii;A. Koslowski;W. Thiel
通讯作者:
W. Thiel
DOI:
10.1039/c0cp02935a
发表时间:
2011
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
R. Mitrić;J. Petersen;Matthias Wohlgemuth;U. Werner;V. Bonačić‐Koutecký
通讯作者:
V. Bonačić‐Koutecký