scholarly journals The Resonance Raman Spectra Of Biologically Relevant Polyene Derivatives in T1: A Theoretical Investigation

1999 ◽  
Vol 19 (1-4) ◽  
pp. 191-194
Author(s):  
Fabrizia Negri ◽  
Giorgio Orlandi
Keyword(s):  
Raman Spectra ◽  
Quantum Chemical ◽  
Resonance Raman ◽  
Vibrational Structure ◽  
Biologically Relevant ◽  
Exciting Wavelength ◽  
Equilibrium Structures ◽  
Resonance Raman Spectra ◽  
Franck Condon ◽  
Semiempirical Quantum Chemical Calculations

The vibrational structure of the T1 resonance Raman spectra of β-ionylidene acetaldehyde (C15 aldehyde) and retinal are analyzed with the help of semiempirical quantum chemical calculations. The T1 equilibrium structures and vibrational force fields, along with the structure in the Tn state which is in resonance with the exciting wavelength, are obtained and employed to model the spectra under the assumption of a dominant Franck–Condon mechanism.

Ultraviolet Resonance Raman Spectra of Escherichia Coli with 222.5–251.0 nm Pulsed Laser Excitation

1988 ◽  
Vol 42 (5) ◽  
pp. 782-788 ◽  
Author(s):  
K. A. Britton ◽  
R. A. Dalterio ◽  
W. H. Nelson ◽  
D. Britt ◽  
J. F. Sperry
Keyword(s):  
Escherichia Coli ◽  
Amino Acids ◽  
Nucleic Acid ◽  
Raman Spectra ◽  
Resonance Raman ◽  
Aromatic Amino Acids ◽  
Selective Excitation ◽  
Exciting Wavelength ◽  
Resonance Raman Spectra ◽  
Ultraviolet Resonance Raman

Resonance Raman spectra of the gram-negative organism, Escherichia coli, have been obtained with 222.5-, 230.6-, and 251.0-nm excitation, and the results have been compared with those reported earlier for 242.4-nm excitation. Major changes in bacterial spectra have been observed with changes in exciting wavelength. The origins of the major peaks in each spectrum have been explained primarily in terms of contributions of nucleic acid bases and aromatic amino acids. As an aid in making assignments, spectra of aromatic amino acids, nucleosides, and mixtures of the two have been obtained at each wavelength used to excite bacterial spectra. Background fluorescence has been observed to be negligible below 251 nm. Selective excitation of bacterial nucleic acid and protein components has been done with ease. Results suggest that an extension of the exciting wavelength range to 190–220 nm will allow the selective excitation of additional cell components.

Resonance Raman spectra and quantum chemical vibrational analysis of the C7H7⋅ and C7D7⋅ benzyl radicals

1994 ◽  
Vol 100 (5) ◽  
pp. 3503-3513 ◽  
Author(s):  
Frans W. Langkilde ◽  
Krzysztof Bajdor ◽  
Robert Wilbrandt ◽  
Fabrizia Negri ◽  
Francesco Zerbetto ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Quantum Chemical ◽  
Resonance Raman ◽  
Vibrational Analysis ◽  
Benzyl Radicals ◽  
Resonance Raman Spectra

Probing the structure and Franck-Condon region of protochlorophyllideathrough analysis of the Raman and resonance Raman spectra

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
Robert Hanf ◽  
Stefanie Tschierlei ◽  
Benjamin Dietzek ◽  
Sonja Seidel ◽  
Gudrun Hermann ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Resonance Raman ◽  
Resonance Raman Spectra ◽  
Franck Condon

scholarly journals Lowest excited triplet state of 2,5-dimethyl-1,3,5-hexatriene: resonance Raman spectra and quantum chemical calculations

1991 ◽  
Vol 95 (18) ◽  
pp. 6895-6904 ◽  
Author(s):  
Fabrizia Negri ◽  
Giorgio Orlandi ◽  
Albert M. Brouwer ◽  
Frans W. Langkilde ◽  
Soeren Moeller ◽  
...  
Keyword(s):  
Triplet State ◽  
Quantum Chemical Calculations ◽  
Raman Spectra ◽  
Quantum Chemical ◽  
Resonance Raman ◽  
Excited Triplet State ◽  
Excited Triplet ◽  
Resonance Raman Spectra
Sign in / Sign up

Export Citation Format

Share Document