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Conformations of Highly Charged Dendronized Polymers in Aqueous Solutions of Varying Ionic Strength
Author(s) -
Girbasova Nina,
Aseyev Vladimir,
Saratovsky Sergey,
Moukhina Irina,
Tenhu Heikki,
Bilibin Alexander
Publication year - 2003
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200300016
Subject(s) - dendrimer , polyacrylic acid , polymer , chemistry , aspartic acid , polymer chemistry , aqueous solution , residue (chemistry) , molecule , amide , ionic strength , organic chemistry , amino acid , biochemistry
Conformations of two linear, charged dendronized polymers in aqueous solutions of different ionic strengths have been studied by light scattering. Both polymers have a polyacrylic core. The repeating unit of the first of the polymers studied contains a residue of aspartic acid bound to a carboxylic group of the core by an amide group as a first‐generation dendron, whereas the second polymer contains second‐generation dendrons constructed of three molecules of aspartic acid. The dendritic polymers adopt different conformations depending on the generation. Polymers with first‐generation dendrons are flexible and their conformation is sensitive to salt. The polymers with dendrons of the second generation adopt a semi‐flexible rod conformation. Their conformation is not sensitive to salt but is determined by the bulkiness of the dendrons.Polyacrylic polymers having a residue of aspartic acid as a first‐generation dendron ( P1 ), and having a second‐generation dendron on the basis of aspartic acid ( P2 ).