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Gold Nanostructures Formed in Ionic Clusters of Perfluorinated Ionomer
Author(s) -
Han TaiHoon,
Kim DongOuk,
Lee Youngkwan,
Suh SuJeong,
Jung HyunChul,
Oh YongSoo,
Nam JaeDo
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600312
Subject(s) - nafion , nanorod , ionomer , colloidal gold , materials science , small angle x ray scattering , gold cluster , nanostructure , nanoparticle , cluster (spacecraft) , ionic bonding , nanotechnology , chemical engineering , polymer , composite material , chemistry , ion , scattering , copolymer , electrochemistry , organic chemistry , optics , electronic structure , electrode , physics , computer science , engineering , programming language , computational chemistry
Summary: Gold nanoparticles and nanorods have been synthesized in the ionic cluster network of Nafion using a liquid‐phase chemical impregnation/reduction process seemingly visualizing the phase‐separated hydrated cluster network of Nafion. The spherical shape of the hydrated clusters is clearly seen by the replicated gold nanoparticles with diameters of 5–6 nm. The gold nanoparticles grow through the Nafion cluster network to form gold nanorods with diameters of 5–6 nm and a characteristic length of 12–15 nm, which compare well to the previously reported small‐angle X‐ray scattering results. Tiny channels between adjacent spherical clusters are also observed, which expand to form a rod structure by a reorganization of ion exchange sites and an elastic deformation of Nafion polymer chains. The gold nanorods become interconnected in a cascadic feature, and a tripod‐shaped nanorod structure is one of the most commonly observed structures of the replicated gold. Although further study should be performed, the synthesized gold may be used to visualize the hydrated cluster and the network structure of Nafion, which could be used as important information in identifying the morphology and ion transport phenomena of Nafion.Gold nanoparticles and nanorods growing through a hydrated Nafion cluster network.