Interaction of water-soluble polypyridylphenylene dendrimers with a polymethacrylate anionстатья
Информация о цитировании статьи получена из
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Izumrudov V.A.a ,
Kuchkina N.V.b,
Rusanov A.L.b,
Shifrina Z.B.b
Журнал:
Polymer Science, Series A
Том:
51
Номер:
3
Год издания:
2009
Издательство:
Pleiades Publishing, Ltd
Местоположение издательства:
Road Town, United Kingdom
Первая страница:
229
Последняя страница:
241
DOI:
10.1134/S0965545X09030018
Аннотация:
Cationic water-soluble dendrimers have been prepared by the alkylation of pyridyl groups in polypyridylphenylene dendrimers of the first four generations, and their interaction with a polymethacrylate anion has been studied. The stability of polyelectrolyte complexes in aqueoussaline solutions has been studied by fluorimetric titration with the use of the pyrenyl-tagged polyanion, and it has been shown that the stability of these complexes significantly increases with the dendrimer generation number and the content of hydrophobic phenylene groups. Based on sedimentation analysis and turbidimetric titration, it is inferred that a significant part of charged groups of dendrimers are inaccessible to interaction with the polyanion and that water-soluble nonstoichiometric polyelectrolyte complexes develop in mixtures of higher generation dendrimers. Modeling results of this study may be useful for designing efficient cationic dendrimer carriers of genetic material and hydrophobic physiologically active compounds. © 2009 Pleiades Publishing, Ltd.
Добавил в систему:
Изумрудов Владимир Алексеевич