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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Rigid-to-Flexible Transition in a Molecular Brush in a Good Solvent at a Semidilute Concentrationстатья
- Авторы: Jia-Jhen Kang, Sachse Clemens, Ko Chia-Hsin, Schroer Martin A., Vela Stefano Da, Molodenskiy Dmitry, Kohlbrecher Joachim, Bushuev Nikita V., Gumerov Rustam A., Potemkin Igor I., Jordan Rainer, Papadakis Christine M.
- Журнал: Langmuir
- Том: 38
- Номер: 17
- Год издания: 2022
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 5226
- Последняя страница: 5236
- DOI: 10.1021/acs.langmuir.1c02589
- Аннотация: The structures of a molecular brush in a good solvent are investigated using synchrotron small-angle X-ray scattering in a wide range of concentrations. The brush under study, PiPOx239-g-PnPrOx14, features a relatively long poly(2-isopropenyl-2-oxazoline) (PiPOx) backbone and short poly(2-n-propyl-2-oxazoline) (PnPrOx) side chains. As a solvent, ethanol is used. By model fitting, the overall size and the persistence length as well as the interaction length and interaction strength are determined. At this, the interplay between form and structure factor is taken into account. The conformation of the molecular brush is traced upon increasing the solution concentration, and a rigid-to-flexible transition is found near the overlap concentration. Finally, the results of computer simulations of the molecular brush solutions confirm the experimental results.
- Добавил в систему: Гумеров Рустам Анрикович