Controlled aggregation of functionalized gold nanoparticles with a novel conjugated oligomer.
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.
Liu
Xiaofeng
X
Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Organic Solids, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P.R. China.
He
Xiaorong
X
Jiu
Tonggang
T
Yuan
Mingjian
M
Xu
Jialiang
J
Lv
Jing
J
Liu
Huibiao
H
Li
Yuliang
Y
D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D008958:Models, Molecular; D015394:Molecular Structure; D010316:Particle Size; D011166:Porphyrins / Q000138:chemical synthesis / Q000737:chemistry; D011725:Pyridines / Q000138:chemical synthesis / Q000737:chemistry; D020349:Surface Plasmon Resonance; D013499:Surface Properties
D011166:Porphyrins; D011725:Pyridines; D006046:Gold