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New cholesteric comb-shaped polymers based on (S)-(+)-1,1′-binaphthalene-2,2′-diylphosphoric acidстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Kalinovskii I.O.a, Boiko N.I.a, Shibaev P.V.b, Shibaev V.P.a
- Журнал: Vysokomolekularnye Soedineniya. Ser.A Ser.B Ser.C - Kratkie Soobshcheniya
- Том: 40
- Номер: 3
- Год издания: 1998
- Издательство: Russian Academy of Sciences
- Местоположение издательства: Russian Federation
- Первая страница: 395
- Последняя страница: 396
- Аннотация: A series of liquid-crystal copolymers was synthesized for the first time on the basis of a nematogenic phenylbenzoate acrylic monomer and a new chiral acrylic monomer obtained from an enantiomerically pure (S)-(+)-1,1′-binaphthalene-2,2′-diylphosphoric acid. It was found that copolymers containing less than 12 mol % of the above atropenantiomer form a cholesteric phase with a helical twisting power of the chiral fragment more three times that for the similar cholesterol-based copolymers. A weak temperature dependence of the helical twisting power for the chiral fragments of synthesized copolymers (in contrast to the strong temperature dependence observed for the open 1,1′-binaphthyl derivatives) was explained on the basis of molecular dynamics modeling of the conformational states for the open and closed forms of binaphthyl fragment in a liquid-crystal matrix.
- Добавил в систему: Шибаев Петр Валерьевич