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Controlled Aggregation of Functionalized Gold Nanoparticles with a Novel Conjugated Oligomer
Author(s) -
Liu Xiaofeng,
He Xiaorong,
Jiu Tonggang,
Yuan Mingjian,
Xu Jialiang,
Lv Jing,
Liu Huibiao,
Li Yuliang
Publication year - 2007
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200600763
Subject(s) - dynamic light scattering , oligomer , conjugated system , toluene , colloidal gold , nanoparticle , materials science , transmission electron microscopy , phenylene , solvent , polymer chemistry , porphyrin , photochemistry , chemical engineering , chemistry , nanotechnology , organic chemistry , polymer , engineering
A new route is developed to control the self‐assembly of gold nanoparticles (AuNPs) functionalized with a novel pyridyl‐ended porphyrin–oligo( p ‐phenylene vinylene) conjugated oligomer (P–OPV–Py) into branched‐rods, chain‐networks, uniform fractal‐like Au clusters, and larger nanoparticles. The techniques of optical spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS) are used to characterize the self‐assembly in various solvent systems (pure toluene, CHCl 3 /toluene, THF/toluene and n‐ butanol/toluene). A combination of the ligand/AuNPs molar ratio and relative concentration serves as the driving force to control the size and shape of P–OPV–Py capped AuNPs.