Positron annihilation study of polyphenylene dendrimers

Autor:	Károly Süvegh, Uwe-Martin Wiesler, Klaus Müllen, T. Marek, Attila Vértes, Andrzej Ernst, Roland E. Bauer, Markus Klapper, Tanja Weil
Rok vydání:	2003
Předmět:	Condensed Matter::Soft Condensed Matter Quantitative Biology::Biomolecules Molecular dynamics Radiation Materials science Chemical physics Computational chemistry Positron Lifetime Spectroscopy Dendrimer Molecule Positronium Positron annihilation
Zdroj:	Handbook of Porous Solids
ISSN:	0969-806X
DOI:	10.1016/s0969-806x(03)00061-6
Popis:	The free volume of a series of rigid polyphenylene dendrimers was studied by positron lifetime spectroscopy and the experimental data were compared with results from molecular dynamics calculations. Contrary to dendrimers containing flexible repeat units rigid polyphenylene dendrimers proved to contain large stable “inner” voids of a distinct size between their dendritic branches. The size of the “inner” cavities increases with the size of the dendrimer. Due to these voids, polyphenylene dendrimers are potentially attractive with respect to the selective incorporation of guest molecules.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d01de3751ed02d1050177deafe5fb8e6 https://doi.org/10.1016/s0969-806x(03)00061-6 Zobrazit plný text záznamu Full Text from ScienceDirect