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Potentiometric Studies on Interactions of α-L-glutamic Acid Oligomers with Cu(II) in aqueous Solutions

✍ Scribed by L. Mosoni; M. M. Petit-Ramel; A. Domard; M. Rinaudo

Publisher
Wiley (John Wiley & Sons)
Year
1979
Tongue
English
Weight
419 KB
Volume
18
Category
Article
ISSN
0006-3525

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✦ Synopsis

Four oligomers of a-L-glutamic acid with ends blocked by nonionizable protecting groups were studied in 0.1M NaC104 solution using potentiometric measurements. The titrations were analyzed using a pit-mapping method. The results are compared with those obtained with the corresponding polymer. The successive dissociation constants of the carboxylic side chains are obtained for oligomers with degrees of polymerization varying from 1 to 6. Then the successive stability constants corresponding to the association Cu2+-oligomer are given, and the MpHyLr distribution is calculated for each oligomer introducing MH,L complexes.

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