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Covalent Surface Functionalization and Self‐Organization of Silica Nanoparticles
Author(s) -
Beck Christian,
Härtl Wolfram,
Hempelmann Rolf
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990503)38:9<1297::aid-anie1297>3.0.co;2-9
Subject(s) - surface modification , covalent bond , nanoparticle , dispersity , ionic bonding , colloid , ionic strength , aqueous solution , carboxylic acid , dissociation (chemistry) , chemical engineering , schematic , materials science , chemistry , polymer chemistry , organic chemistry , nanotechnology , engineering , ion , electronic engineering
More than 10 000 carboxylic acid groups are covalently coated on monodisperse silica nanoparticles (see schematic diagram) prepared by a Stöber synthesis. Colloidal super crystals form spontaneously on dissociation in aqueous dispersion with low ionic strength.