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A Facile Synthesis of Dynamic Supramolecular Aggregates of Cucurbit[ n ]uril ( n =5–8) Capped with Gold Nanoparticles in Aqueous Media
Author(s) -
Lee TungChun,
Scherman Oren A.
Publication year - 2012
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.201102675
Subject(s) - supramolecular chemistry , nanoparticle , colloidal gold , metastability , aqueous solution , molecule , chemical engineering , chemistry , aqueous medium , nanotechnology , materials science , combinatorial chemistry , organic chemistry , engineering
Supramolecular capping of cucurbit[ n ]uril (CB[ n ]), where n =5–8, by narrowly dispersed gold nanoparticles has been achieved through a facile synthetic route with metastable gold nanoparticles as a labile intermediate. The resultant assemblies were stable in solution, and were found to form dynamic aggregates consisting of a controllable ratio of singly and doubly capped CB[ n ]. The stability of the system was attributed to the presence of sodium cations bound on the vacant carbonyl portals of the singly capped CB[ n ] molecules. These dynamically capped CB[ n ] systems can find potential use in a range of applications varying from ultrasensitive multiplexed in situ sensing to photocatalysis.