Probing the Location of the Terminal Groups of Dendrimers in Dilute Solution

Autor:	Donald A. Tomalia, Andreas Topp, Ralph Spindler, Barry J. Bauer, Eric J. Amis, June W. Klimash
Rok vydání:	1999
Předmět:	Polymers and Plastics Molecular model Scattering Chemistry Organic Chemistry Neutron scattering Small-angle neutron scattering Inorganic Chemistry End-group Crystallography Deuterium Dendrimer Polymer chemistry Materials Chemistry Radius of gyration
Zdroj:	Macromolecules. 32:7226-7231
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma990125s
Popis:	The spatial distribution of the terminal groups of poly(amido amine) dendrimers have been determined experimentally by small-angle neutron scattering with deuterium labeling and scattering contrast variation. The radius of gyration of deuterated terminal units of generation 7 dendrimers is 39.3 ± 1.0 A. This is significantly larger than the radius of gyration of the whole dendrimer, which is 34.4 ± 0.2 A. These data indicate that dendrimers have terminal groups that are concentrated near the periphery. These results are inconsistent with many computer simulations and some molecular models.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a787a69ecfb74a5f6ff7dcc07a136759 https://doi.org/10.1021/ma990125s Zobrazit plný text záznamu