UV Resonance Raman Determination of Polyproline II, Extended 2.51-Helix, and β-Sheet Ψ Angle Energy Landscape in Poly-l-Lysine and Poly-l-Glutamic Acid

2005 ◽  
Vol 127 (21) ◽  
pp. 7712-7720 ◽  
Author(s):  
Aleksandr V. Mikhonin ◽  
Nataliya S. Myshakina ◽  
Sergei V. Bykov ◽  
Sanford A. Asher
Keyword(s):  
Glutamic Acid ◽  
Energy Landscape ◽  
Resonance Raman ◽  
Polyproline Ii ◽  
Uv Resonance Raman ◽  
Ψ Angle ◽  
Β Sheet

scholarly journals UV Resonance Raman Determination of Molecular Mechanism of Poly(N-isopropylacrylamide) Volume Phase Transition

2009 ◽  
Vol 113 (13) ◽  
pp. 4248-4256 ◽  
Author(s):  
Zeeshan Ahmed ◽  
Edward A. Gooding ◽  
Konstantin V. Pimenov ◽  
Luling Wang ◽  
Sanford A. Asher
Keyword(s):  
Phase Transition ◽  
Molecular Mechanism ◽  
Resonance Raman ◽  
Volume Phase Transition ◽  
Volume Phase ◽  
Uv Resonance Raman

UV resonance Raman contribution to structure determination of the X form of double-stranded poly(dA-dT)

1995 ◽  
Vol 344 (1-2) ◽  
pp. 11-20 ◽  
Author(s):  
Alena Tomkova ◽  
Pavol Miskovsky ◽  
Laurent Chinsky ◽  
Pierre-Yves Turpin
Keyword(s):  
Structure Determination ◽  
Resonance Raman ◽  
Uv Resonance Raman

Study of Residual Lignin in Pulp by UV Resonance Raman Spectroscopy

Holzforschung ◽  
2001 ◽  
Vol 55 (6) ◽  
pp. 631-638 ◽  
Author(s):  
M. Halttunen ◽  
J. Vyörykkä ◽  
B. Hortling ◽  
T. Tamminen ◽  
D. Batchelder ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Lignin Content ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Residual Lignin ◽  
Highly Sensitive ◽  
Uv Resonance Raman ◽  
Uv Resonance Raman Spectroscopy ◽  
Hexenuronic Acid

Summary A major problem in the development of new bleaching technologies for pulp is the difficulty of analysing the changes induced by bleaching chemicals in the structures of residual lignin. Separation and isolation of the residual lignin before the analysis may modify the constituents of interest, whereas if the pulp is analysed directly, the responses from cellulose and hemicelluloses will overlap the signal from the residual lignin. In this study, UV resonance Raman spectroscopy, a powerful technique for detecting trace components in complex mixtures, was applied to detect the changes in the residual lignin content after bleaching stages. The resonance Raman technique was found to be highly sensitive and selective for lignin structures allowing the detection of trace amounts of lignin after the final bleaching stages. Furthermore, it enabled rapid and easy determination of hexenuronic acid content. UV resonance Raman spectroscopy would appear to be a technique of great potential for pulping and bleaching research.

Dihedral ψ Angle Dependence of the Amide III Vibration:  A Uniquely Sensitive UV Resonance Raman Secondary Structural Probe

2001 ◽  
Vol 123 (47) ◽  
pp. 11775-11781 ◽  
Author(s):  
Sanford A. Asher ◽  
Anatoli Ianoul ◽  
Guido Mix ◽  
Mary N. Boyden ◽  
Anton Karnoup ◽  
...  
Keyword(s):  
Resonance Raman ◽  
Angle Dependence ◽  
Structural Probe ◽  
Uv Resonance Raman ◽  
Ψ Angle
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