scholarly journals Time-dependent Picosecond Transient Absorption Spectra of 9-Acetylanthracene, Benzophenone and Acridine in Solution

1984 ◽  
Vol 4 (1-6) ◽  
pp. 287-295 ◽  
Author(s):  
Kumao Hamanoue ◽  
Kazuo Nakajima ◽  
Toshiharu Hidaka ◽  
Toshihiro Nakayama ◽  
Hiroshi Teranishi
Keyword(s):  
Absorption Spectra ◽  
Time Scale ◽  
Room Temperature ◽  
Transient Absorption ◽  
Time Dependent ◽  
Spectral Change ◽  
Transient Absorption Spectra ◽  
Picosecond Time Scale ◽  
Spectral Shapes

The transient absorption spectra of the title compounds in solutions at room temperature have been measured on the picosecond time scale. For 9-acetylanthracene and acridine there were measurable changes of the spectral shapes in the first picosecond region, while no spectral change was observed for benzophenone.

scholarly journals A convenient nanosecond laser photolysis system for the measurements of transient absorption spectra on a microsecond time scale.

1987 ◽  
Vol 36 (2) ◽  
pp. 126-134 ◽  
Author(s):  
Toshihiro NAKAYAMA ◽  
Tetsuji YAMAGUCHI ◽  
Kumao HAMANOUE ◽  
Hiroshi TERANISHI ◽  
Toshihiko NAGAMURA ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Time Scale ◽  
Transient Absorption ◽  
Laser Photolysis ◽  
Nanosecond Laser ◽  
Transient Absorption Spectra ◽  
Nanosecond Laser Photolysis

scholarly journals Model-free decomposition of transient absorption spectra into components with time-dependent shape

2019 ◽  
Vol 205 ◽  
pp. 09011
Author(s):  
Lang B. ◽  
Rosspeintner A. ◽  
Angulo G. ◽  
Vauthey E.
Keyword(s):  
Absorption Spectra ◽  
Transient Absorption ◽  
Time Dependent ◽  
Absorption Data ◽  
Spectral Signatures ◽  
Additional Information ◽  
Transient Absorption Spectra ◽  
Model Free ◽  
Ultrafast Transient Absorption ◽  
Free Decomposition

Disentangling overlapping spectral signatures with time-dependent shape is performed using additional information contained in ultrafast transient absorption data, without applying any assumption on the underlying kinetics.

Photophysical properties of pyridinium salts derived from purine bases

1990 ◽  
Vol 68 (12) ◽  
pp. 2164-2170 ◽  
Author(s):  
Bohdan Skalski ◽  
Stefan Paszyc ◽  
Ryszard W. Adamiak ◽  
Ronald P. Steer ◽  
Ronald E. Verrall
Keyword(s):  
Absorption Spectra ◽  
Fluorescence Spectra ◽  
Room Temperature ◽  
Transient Absorption ◽  
Photophysical Properties ◽  
Pyridinium Salts ◽  
Excited Triplet ◽  
Transient Absorption Spectra ◽  
Counter Ions ◽  
Phosphorescence Spectra

The absorption spectra, fluorescence spectra, fluorescence lifetimes, fluorescence quenching, phosphorescence spectra, phosphorescence lifetimes, and picosecond transient absorption spectra of several purinyl-pyridinium salts have been measured in several solvents at room temperature and in ethanol glasses at 77 K. It is concluded that the previously observed photochemical transformation of N-[9-(2′,3′,5′-tri-O-acetyl-β-D-ribofuranosyl)purin-6-yl]pyridinium chloride 1 into the highly fluorescent tri-O-acetylluminarosine 6 occurs via an excited triplet state. It is also shown that intersystem crossing in purinyl-pyridinium salts is induced by an intermolecular charge-transfer interaction with the counter ions. Keywords: purinyl-pyridinium salts, fluorescence, phosphorescence.

Kinetic-Model-Free Analysis of Transient Absorption Spectra Enabled by 2D Correlation Analysis

2021 ◽  
pp. 4148-4153
Author(s):  
Julian Hniopek ◽  
Carolin Müller ◽  
Thomas Bocklitz ◽  
Michael Schmitt ◽  
Benjamin Dietzek ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Correlation Analysis ◽  
Absorption Spectra ◽  
Transient Absorption ◽  
Transient Absorption Spectra ◽  
Model Free ◽  
2D Correlation Analysis
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