Abstract: The features of the spatial distribution of complexes of Cu(II) in hydroalcoholic solutions of linear poly(ethylenimine) (PEI) at 77 K have been studied by ESR. The mean local concentration <C(M)> of the metal complexes in the volume of a random coil of PEI have been measured experimentally. The character of the variation of the mean volume V(M) occupied by the Cu(II) ions in a single random coil of PEI as a function of the ligand:metal ratio has been established. At the limiting level of the binding of Cu(II) V(M)BAR reaches a value of approximately 12 nm3, and the mean distance between the complexes r(M) is equal to 8.5 +/- 0.3 angstrom. It has been established with the aid of computer calculations of ESR spectra that the Cu(PEI) complexes have strong triaxial anisotropy of the g and A tensors, and the fraction of the copper complexes found in regions with a very high value of <C(M)>, i.e., associates, has been determined. The possibilities and restrictions of the proposed approach for measuring the values of <C(M)> and its accuracy have been discussed.

Cite: Kokorin A.I. , Shubin A.A.
Spatial Organization of Random Coils of Linear Poly(ethylenimine) Containing Copper(II) Ions in Solution
Journal of Structural Chemistry. 1989. V.30. N2. P.260-267. DOI: 10.1007/BF00761315 WOS Scopus РИНЦ OpenAlex

Original: Кокорин А.И. , Шубин А.А.
Пространственная организация клубка линейного полиэтиленимина, содержащего ионы меди(II), в растворе
Журнал структурной химии. 1989. Т.30. №2. С.106-112. РИНЦ ANCAN

Dates:

Submitted:	Jun 1, 1987
Published print:	Mar 1, 1989

Identifiers:

Web of science:	WOS:A1989FT87600015
Scopus:	2-s2.0-34249965982
Elibrary:	29740326
OpenAlex:	W223820693

Citing: Пока нет цитирований

Altmetrics: