Thermodynamics and Kinetics of Formation of Intramolecular Naphthalene Dimer Radical Cation Studied by Near-IR Transient Absorption Spectroscopy

2004 ◽  
Vol 77 (8) ◽  
pp. 1443-1448 ◽  
Author(s):  
Toshiki Fushimi ◽  
Yusuke Fujita ◽  
Hideo Ohkita ◽  
Shinzaburo Ito
Keyword(s):  
Radical Cation ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Thermodynamics And Kinetics ◽  
Near Ir ◽  
Kinetics Of Formation ◽  
Kinetics Of ◽  
Dimer Radical Cation

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

Transient Absorption Spectroscopy of the Electron Transfer Step in the Photochemically Activated Polymerizations of N-ethylcarbazole and 9-phenylcarbazole.

2021 ◽  
Author(s):  
Georgia Thornton ◽  
Ryan Phelps ◽  
Andrew Orr-Ewing
Keyword(s):  
Electron Transfer ◽  
Radical Cation ◽  
Absorption Spectroscopy ◽  
Electron Acceptor ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Transfer Step

The polymerization of photoexcited N-ethylcarbazole (N-EC) in the presence of an electron acceptor begins with an electron transfer (ET) step to generate a radical cation of N-EC (N-EC+.). Here, the...

Oxygen diffusion dynamics in organic semiconductor films

2015 ◽  
Vol 3 (39) ◽  
pp. 10079-10084 ◽  
Author(s):  
Safa Shoaee ◽  
James R. Durrant
Keyword(s):  
Excited States ◽  
Absorption Spectroscopy ◽  
Organic Semiconductor ◽  
Oxygen Diffusion ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Semiconductor Films ◽  
Diffusion Dynamics ◽  
Kinetics Of

Transient absorption spectroscopy is commonly used to probe the yield and kinetics of excited states of materials.

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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