Photochemical reactions of triplet state of safranine-T studied by transient absorption spectroscopy in visible/near-IR regions

1999 ◽  
Vol 1 (16) ◽  
pp. 3737-3742 ◽  
Author(s):  
Shafiqul D.-M. Islam ◽  
Mamoru Fujitsuka ◽  
Osamu Ito
Keyword(s):  
Triplet State ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Photochemical Reactions ◽  
Transient Absorption Spectroscopy ◽  
Near Ir ◽  
Safranine T

Charge delocalization of naphthalene cations formed in triad molecules studied by near-IR transient absorption spectroscopy

2003 ◽  
Vol 374 (1-2) ◽  
pp. 137-142 ◽  
Author(s):  
Hideo Ohkita ◽  
Toshiki Fushimi ◽  
Kunihiro Atsumi ◽  
Yusuke Fujita ◽  
Shinzaburo Ito ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Charge Delocalization ◽  
Near Ir

Triplet state quenching of phenosafranine dye by indolic compounds studied by transient absorption spectroscopy

2015 ◽  
Vol 14 (2) ◽  
pp. 407-413 ◽  
Author(s):  
Martín F. Broglia ◽  
Carlos M. Previtali ◽  
Sonia G. Bertolotti
Keyword(s):  
Triplet State ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Transient Absorption Spectroscopy ◽  
Synthetic Dye ◽  
Biological Relevance ◽  
Indolic Compounds

The interaction of the triplet state of the synthetic dye phenosafranine (3,7-diamino-5-phenylphenazinium chloride) with indolic compounds of biological relevance was investigated in water by means of laser flash photolysis.

scholarly journals Investigation of different photochemical reactions of avobenzone derivatives by ultrafast transient absorption spectroscopy

2019 ◽  
Vol 18 (12) ◽  
pp. 3000-3007
Author(s):  
Jialin Wang ◽  
Yibo Lei ◽  
Yan Guo ◽  
Junxiao Wang ◽  
Jiani Ma
Keyword(s):  
Absorption Spectroscopy ◽  
Photochemical Reaction ◽  
Density Functional ◽  
Transient Absorption ◽  
Density Functional Theory Calculations ◽  
Photochemical Reactions ◽  
Transient Absorption Spectroscopy ◽  
Functional Theory ◽  
Ultrafast Transient Absorption ◽  
Ultrafast Transient Absorption Spectroscopy

Ultrafast transient absorption spectroscopy and density functional theory calculations are utilized to get a better understanding of photophysical and photochemical reaction mechanisms of AB-Me, AB-Pr, AB-Br and AB-Cl.

Ultrafast Transient Absorption Spectroscopy Investigations of Excited State Dynamics in SWNT/Polymer Composites

2004 ◽  
Vol 858 ◽  
Author(s):  
David J. Styers-Barnett ◽  
Steven P. Ellison ◽  
Cheol Park ◽  
Kristopher E. Wise ◽  
John M. Papanikolas
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Hot Electron ◽  
Plasmon Band ◽  
Near Ir ◽  
Spectral Shifts ◽  
Femtosecond Transient Absorption ◽  
Transient Spectra ◽  
Walled Carbon Nanotubes

ABSTRACTWavelength-resolved femtosecond transient absorption spectroscopy is used to follow the electronic dynamics of single-walled carbon nanotubes in polymers following visible and near IR photoexcitation. Electron-hole (e-h) pairs give rise to sharp features in the transient spectra that decay in amplitude and exhibit rapid spectral shifts. The decay reflects (e-h) recombination on both short (1.3 ps) and long (35 ps) time scales. Transient spectra also exhibit a broad photobleach at early times that arises from the cooling of a hot electron gas created via excitation at the red edge of a π-plasmon band.

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