scholarly journals Excited States of Water-Soluble Metal Porphyrins as Microenvironmental Probes for DNA and DNA-Model Compounds:  Time-Resolved Transient Absorption and Resonance Raman Studies of Ni(TMpy-P4) in [Poly(dG-dC)]2and [Poly(dA-dT)]2

1996 ◽  
Vol 100 (30) ◽  
pp. 12649-12659 ◽  
Author(s):  
Victor A. Galievsky ◽  
Vladimir S. Chirvony ◽  
Sergei G. Kruglik ◽  
Vladimir V. Ermolenkov ◽  
Valentine A. Orlovich ◽  
...  



1995 ◽  
Vol 99 (15) ◽  
pp. 5732-5741 ◽  
Author(s):  
Sergei G. Kruglik ◽  
Victor A. Galievsky ◽  
Vladimir S. Chirvony ◽  
Pavel A. Apanasevich ◽  
Vladimir V. Ermolenkov ◽  
...  


1996 ◽  
Vol 100 (8) ◽  
pp. 3075-3083 ◽  
Author(s):  
Sae Chae Jeoung ◽  
Dongho Kim ◽  
Dae Won Cho ◽  
Minjoong Yoon






2006 ◽  
Vol 110 (25) ◽  
pp. 12766-12781 ◽  
Author(s):  
Michel Negrerie ◽  
Simona Cianetti ◽  
Marten H. Vos ◽  
Jean-Louis Martin ◽  
Sergei G. Kruglik


2015 ◽  
Vol 17 (47) ◽  
pp. 31646-31652 ◽  
Author(s):  
Yoshio Teki ◽  
Sadaharu Miyamoto ◽  
Kentaro Koide

We have studied the relationship between the π-topology and the photo-excited high-spin states of π-conjugated spin systems, 9-anthracen-(3-phenyl-t-butylnitroxide) radical (1m) and 9-anthracen-(4-phenyl-t-butylnitroxide) radical (1p) systems, by time-resolved ESR and transient absorption spectroscopies.



1999 ◽  
Vol 19 (1-4) ◽  
pp. 271-274 ◽  
Author(s):  
S. E. J. Bell ◽  
J. H. Rice ◽  
J. J. McGarvey ◽  
R. E. Hester ◽  
J. N. Moore ◽  
...  

Time-resolved resonance Raman (TR3) and absorbance difference studies of the excited states of Cu(TPP) (TPP=5,10,15,20-tetraphenylporphyrin) have been carried out with < 10 ps times resolution in THF and pyridine solvents. In THF the distinctive transient Raman bands in the ν2 and ν4 regions, previously observed with ns laser pulses, grow in the first 55 ps before decaying in 100's of ps. The ∆A spectra also show biphasic decay. This behaviour is associated with attack by solvent on the 4-coordinate excited state to form the longer lived species observed in TR3 experiments.In pyridine two component decay is also observed but it is the shorter-lived species which gives the transient Raman bands seen previously with ns laser excitation. This state is different from that seen in THF. At 5 ps delay ν4 is broader than in the ground state and, more importantly, there is a significant shift in the two pyridine bands at ca. 1000 cm-1. This implies a significant involvement of the pyridine-based orbitals in the excited state.



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