Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Monolayer Studies on Polyanhydro-L-glutamic and Polyanhydro-L-aspartic Acids
Shoichi IkedaToshizo Isemura
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1961 Volume 34 Issue 3 Pages 422-426


To examine the structures of polyanhydro-L-glutamic acid and polyanhydro-L-aspartic acid, we have studied their monolayer properties and compared them with those of poly-DL-pyrrolidone-2-carboxylic acid and poly-L-succinimide. It was found that polyanhydro-L-glutamic acid is not identical with polypyr-rolidone carboxylic acid but with poly-L-glutarimide, which has a rigidly folded configuration even in monolayer. This conclusion is in agreement with the results obtained by other methods. It was shown, however, that polyanhydro-L-aspartic acid can not be identified with poly-L-succinimide but it might be a copolymer of L-succinimide and L-aspartic acid.

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