Layer-by-layer self assembly of polyelectrolytes on colloidal particles

Gleb B. Sukhorukov, Edwin Donath, Heinz Lichtenfeld, Eberhard Knippel, Monika Knippel, Axel Budde, Helmuth Möhwald

Результат исследований: Вклад в журналСтатьярецензирование

793 Цитирования (Scopus)

Аннотация

Polyelectrolytes have been consecutively adsorbed onto charged polystyrene latex particles, forming stable ultrathin multilayer films. Film growth has been followed by electrophoresis, dynamic light scattering, single particle light scattering and fluorescence intensity measurements. Desorption of bound polyelectrolytes has been followed by HPLC. A low percentage of particle aggregates were found if a centrifugation-based technique was applied, whereas a larger number of particle aggregates were observed if polyelectrolytes were consecutively added at saturating concentrations and if centrifugation was avoided. Single particle light scattering allowed for adsorption layer thickness determination. If a layer refractive index of 1.47 was assumed the thickness of a poly(allylamine hydrochloride)/poly(styrene sulfonate) layer pair formed in 0.5 M NaCl was found to be 2-3 nm.

Язык оригиналаАнглийский
Страницы (с-по)253-266
Число страниц14
ЖурналColloids and Surfaces A: Physicochemical and Engineering Aspects
Том137
Номер выпуска1-3
DOI
СостояниеОпубликовано - 15 июн. 1998
Опубликовано для внешнего пользованияДа

Fingerprint

Подробные сведения о темах исследования «Layer-by-layer self assembly of polyelectrolytes on colloidal particles». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать