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Gold Nanoparticles in Organic Capsules: A Supramolecular Assembly of Gold Nanoparticles and Cucurbituril
Author(s) -
Corma Avelino,
García Hermenegildo,
MontesNavajas Pedro,
Primo Ana,
Calvino José Juan,
Trasobares Susana
Publication year - 2007
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200601900
Subject(s) - cucurbituril , colloidal gold , supramolecular chemistry , nanoparticle , nanotechnology , aqueous solution , chemical engineering , materials science , particle (ecology) , adsorption , chemistry , inorganic chemistry , organic chemistry , molecule , oceanography , geology , engineering
Gold nanoparticles (≤1 nm) have been encapsulated inside cucurbit[7]uril (CB[7]) by vapor deposition or chemical reduction in aqueous solutions. CB[7] has unique host properties compared with CB[5] and CB[6]. The particle size distribution obtained with CB[5] and CB[6] is similar to that obtained in the absence of CBs and the particles obtained are much too large to be incorporated inside the organic capsules. When gold nanoparticles are prepared inside CB[7] the resulting supramolecular assembly has shape‐selective properties for gold interactions with amines, cyanide, and quaternary ammonium ions. Thus, CB[7] has the potential to be used in applications such as selective adsorption, sensing, and catalysis.