Efficient Cycloreversion Reaction of a Diarylethene Derivative in Higher Excited States Attained by Off-Resonant Simultaneous Two-Photon Absorption

2017 ◽  
Vol 8 (14) ◽  
pp. 3272-3276 ◽  
Author(s):  
Hikaru Sotome ◽  
Tatsuhiro Nagasaka ◽  
Kanako Une ◽  
Chiaki Okui ◽  
Yukihide Ishibashi ◽  
...  
Keyword(s):  
Excited States ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Higher Excited States

Higher excited states of benzene: Polarized ultraviolet two‐photon absorption spectroscopy

1985 ◽  
Vol 82 (3) ◽  
pp. 1115-1134 ◽  
Author(s):  
R. L. Whetten ◽  
S. G. Grubb ◽  
C. E. Otis ◽  
A. C. Albrecht ◽  
E. R. Grant
Keyword(s):  
Excited States ◽  
Absorption Spectroscopy ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Higher Excited States

Fluorescence anisotropy in indole under two-photon excitation in the spectral range 385–510 nm

2018 ◽  
Vol 20 (30) ◽  
pp. 19922-19931 ◽  
Author(s):  
M. E. Sasin ◽  
A. G. Smolin ◽  
K.-H. Gericke ◽  
E. Tokunaga ◽  
O. S. Vasyutinskii
Keyword(s):  
Propylene Glycol ◽  
Excited States ◽  
Spectral Range ◽  
Ground State ◽  
Fluorescence Anisotropy ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Excitation ◽  
Molecular Ground State

This paper presents the detailed study of two-photon excited fluorescence in indole dissolved in propylene glycol produced by two-photon absorption from the molecular ground state to several high lying excited states.

Excited States and Two-Photon Absorption of Some Novel Thiophenyl Pt(II)−Ethynyl Derivatives

2007 ◽  
Vol 111 (2) ◽  
pp. 244-250 ◽  
Author(s):  
Eirik Glimsdal ◽  
Marcus Carlsson ◽  
Bertil Eliasson ◽  
Boris Minaev ◽  
Mikael Lindgren
Keyword(s):  
Excited States ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Trans-cis Photoisomerization of a Biomimetic Cyclocurcumin Analogue Rationalized by Molecular Modelling

2021 ◽  
Author(s):  
Raúl Losantos ◽  
Jeremy Pecourneau ◽  
Maxime Mourer ◽  
Stephane Parant ◽  
Andreea Pasc ◽  
...  
Keyword(s):  
Excited States ◽  
Density Functional ◽  
Parent Compound ◽  
Photon Absorption ◽  
Present Contribution ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photochemical Properties ◽  
A Minor ◽  
Π State

<div> <p>Cyclocurcumin is a natural compound extracted from turmeric and showing, in addition to antiinfective, antibacterial, and intinflammatory capabilities, solvent-dependent phtoswitching ability. The solvent-dependent photochemistry of cyclocurcumin has been rationalized on the basis of a competition between π-π* and n-π* states. Recently we have reported the synthesis of a biomimetic analogue showing enhanced photochemical properties and in particular presenting photoswitching capacity in various media. In the present contribution we rely on the use of molecular modeling and simulation, incuding density functional and wavefunction based methods to explore the excited states potential energy surface landscape. We see that the addition of a carbon-carbon double bond to the core of the natural compounds favors the population of the π-π* state, whatever the choice of the solvent, and hence leads to photoisomerisation, with fluorescence reduced to only a minor channel, rationalizing the experimental observations. In addition, the two photon absorption cross section is also strongly increased compared to the parent compound, paving the way to the use in biologically oriented applications.</p></div>

GIANT TWO-PHOTON ABSORPTION INTO EXCITED STATES OF BIEXCITON

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3765-3768
Author(s):  
I. DMITRUK ◽  
A. KASUYA ◽  
T. GOTO ◽  
Z. YANCHUK
Keyword(s):  
Absorption Spectra ◽  
Excited States ◽  
Direct Method ◽  
Picosecond Laser ◽  
Laser Pulses ◽  
Binding Energies ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
First Time

Excited states of excitonic molecule have been observed for the first time by direct method of giant two-photon absorption in monoclinic ZnP 2 single crystal. Two excited states with binding energies 3.3 meV and 1.9 meV have been observed in absorption spectra of intense picosecond laser pulses. First one corresponds to rotational excited state. Interpretation of the second one and details of nonlinear absorption spectra are discussed.

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