Topological characterization of normal modes in chains and rings
β Scribed by David D. Keeports
- Publisher
- Springer
- Year
- 1985
- Tongue
- English
- Weight
- 228 KB
- Volume
- 67
- Category
- Article
- ISSN
- 1432-2234
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π SIMILAR VOLUMES
The nature of the local main-chain conformation of polypeptides with charged side chains has been the subject of considerable discussion since Tiffany and Krimm first proposed [(l968) Bwpoljmers 6, 1379-13811 that, rather than being random, the chain is locally relatively regular, with conformations
The concept of characterizing normal vibrational modes l in terms of internal vibrational modes v typical of molecular fragments or structural subunits is n developed. Essential for this concept is the amplitude A A that provides the basis for a n quantitative comparison of modes l and v and, by thi
## Abstract Eight __s__βtriazineβcontaining polyimides were synthesized by solution polycondensation of diisocyanates having an __s__βtriazine ring with pyromellitic dianhydride in dimethylacetamide. Polyimides derived from __meta__βoriented diisocyanates were amorphous and soluble in dipolar aprot