Abstract
AbstractA detailed analysis of the hypo‐ and hyper‐chromic intensity changes as well as the changes in frequency and band shape in the Raman spectra of poly(m1A) upon melting has been made using a newly developed Raman difference technique. An interpretation of these changes allows us to suggest a structure for the double‐helix of this polymer in neutral solution which resembles that of poly(A) in acid pH. In the helix the backbone geometry is shown to be similar to the C 3 endo or A genus and the existence of a hydrogen bond is inferred from the asymmetric band shape of 1100 cm−1 PO−2 stretching vibration wich is not found either in self‐stacked poly(A) at neutral pH. It is expected that the application of the Raman difference technique will result in a detailed description of conformational features of these important macromolecules which cannot be drawn from the resuits of other optical methods.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Berichte der Bunsengesellschaft für physikalische Chemie
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
