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Controllable Assembly of Dimers and Trimers of Gold Nanoparticle Bridged by Tris(2-aminoethyl)amine

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In this paper, dimer and trimer assemblies were prepared through covalent coupling of the monomer, i.e., carboxyl monofuntional gold nanoparticles using Tris(2-aminoethyl)amine (Tren) as a bridging ligand. TEM examination showed that the dimer structures could be obtained with an increased yield using Tren instead of ethylenediamine (EDA) as a bridging molecule without N,N′-Diisopropylcarbodiimide (DIC) in reaction solution. Comparatively, the main trimer structures were obtained when DIC was added into reaction solution. The absorption spectra showed the red shift of the surface plasmon resonance (SPR) from monomer to trimer due to dipole–dipole interaction between proximate particles.
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Keywords: DIMER; GOLD PARTICLE; NANOPARTICLE ASSEMBLY; TREN

Document Type: Research Article

Publication date: 2011-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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