The symmetry of functionalized poly(propylene imine) dendrimers probed with hyper-Rayleigh scattering

Autor:	André Persoons, H.A.M. Biemans, Koen Clays, Erik J. H. Put, C.M.P. Luijkx, E. W. Meijer
Přispěvatelé:	Macromolecular and Organic Chemistry, Macro-Organic Chemistry
Rok vydání:	1996
Předmět:	chemistry.chemical_classification Materials science Scattering General Physics and Astronomy Hyperpolarizability Polymer Chromophore symbols.namesake Crystallography chemistry Dendrimer Polymer chemistry Molecular symmetry symbols Physical and Theoretical Chemistry Rayleigh scattering Macromolecule
Zdroj:	Chemical Physics Letters, 260(1-2), 136-141. Elsevier
ISSN:	0009-2614
DOI:	10.1016/0009-2614(96)00840-8
Popis:	Dendrimers are well-defined highly branched macromolecules that emanate from a central core and are synthesized through a stepwise, repetitive reaction sequence. In this study, different generations of a poly(propylene imine) dendrimer have been functionalized with second-order non-linear optical chromophores. The non-linear optical properties of these macromolecules have been investigated using the hyper-Rayleigh scattering technique. The sensitivity of this technique to molecular symmetry is exploited. The measurements show, in a unique way at the molecular level, that the dendrimers in solution form globular structures at generations with 32 and 64 4-dimethylaminophenylcarboxamide end-groups with restricted mobility of the end-groups.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5194119bfdd4e190213ba0f1c0546a4c https://doi.org/10.1016/0009-2614(96)00840-8 Zobrazit plný text záznamu Full Text from ScienceDirect