Laser pulse trains for controlling excited state dynamics of adenine in water
نویسندگان
چکیده
منابع مشابه
Excited-state potential energy surface for the photophysics of adenine.
The decay paths on the singlet excited-state surface of 9H-adenine and the associated energy barriers have been calculated at the CAS-PT2//CASSCF level. There are three fundamental paths for the photophysics: two paths for the (1)L(b) state which are virtually barrierless at the present level of theory and correspond to formation of the (n,pi) intermediate and direct decay to the ground state a...
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We present a summary of recent advances in the understanding of the UV photophysics of the isolated DNA base adenine, emphasizing a discussion of the mechanisms behind the ultrafast relaxation following excitation to the pipi* band. Drawing on our femtosecond time-resolved photoelectron spectroscopy experiments, we discuss differences in the ultrafast relaxation of adenine and 9-methyladenine a...
متن کاملCritical appraisal of excited state nonadiabatic dynamics simulations of 9H-adenine.
In spite of the importance of nonadiabatic dynamics simulations for the understanding of ultrafast photo-induced phenomena, simulations based on different methodologies have often led to contradictory results. In this work, we proceed through a comprehensive investigation of on-the-fly surface-hopping simulations of 9H-adenine in the gas phase using different electronic structure theories (ab i...
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This study reveals that the periods, ablation areas and orientations of periodic surface structures (ripples) in fused silica can be adjusted by using designed femtosecond (fs) laser pulse trains to control transient localized electron dynamics and corresponding material properties. By increasing the pulse delays from 0 to 100 fs, the ripple periods are changed from ~550 nm to ~255 nm and the o...
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ژورنال
عنوان ژورنال: Physical Chemistry Chemical Physics
سال: 2012
ISSN: 1463-9076,1463-9084
DOI: 10.1039/c2cp24002e