Title :
Electrochemical formation of gold nanodendrites by the additive toluene solvent
Author :
Chiu, Pin-Hsiang ; Huang, Chien-Jung ; Chen, Wen-Ray ; Wang, Yeong-Her ; Chen, Kan-Lin ; Yang, Cheng-Fu ; Meen, Teen-Hang
Author_Institution :
Dept. of Appl. Phys., Nat. Univ. of Kaohsiung, Kaohsiung, Taiwan
Abstract :
Gold nanodendrites (GDs) are successfully fabricated via a simple electrochemical method (ECM) using micelle templates formed by two surfactants with various amounts of toluene solvent, the primary surfactant being hexadecyltrimethylammonium bromide (CTAB) and the cosurfactant being tetradodecylammonium bromide (TTAB). To investigate the influence of toluene solvent on the GDs, the amount of toluene solvent was varied in the range from 10 to 50 μL. It was found that the shape of particles was changed from sphere to dendritic shape, and the UV-vis optical absorption measurement revealed a pronounced red shift of the surface plasmon resonance (SPR) peak from 525 to 540 nm. The selected-area electron diffraction (SAED) patterns reveal that GDs are single crystalline with lattice constant a = 4.072 Å. The GDs have been determined to be pure gold with a face-centered cubic (fcc) structure.
Keywords :
colloids; dendrites; electron diffraction; gold; lattice constants; nanofabrication; organic compounds; red shift; surface plasmon resonance; surfactants; ultraviolet spectra; visible spectra; Au; UV-vis optical absorption measurement; additive toluene solvent; dendritic shape; electrochemical formation; face-centered cubic structure; gold nanodendrites; hexadecyltrimethylammonium bromide; lattice constant; micelle templates; primary surfactant; red shift; selected-area electron diffraction; simple electrochemical method; sphere shape; surface plasmon resonance; tetradodecylammonium bromide; Electrochemical processes; Gold; Nanobioscience; Nanoparticles; Shape; Solvents; Surface morphology; electrochemicall; nanocomposites; nanoparticles;
Conference_Titel :
Nanoelectronics Conference (INEC), 2011 IEEE 4th International
Conference_Location :
Tao-Yuan
Print_ISBN :
978-1-4577-0379-9
Electronic_ISBN :
2159-3523
DOI :
10.1109/INEC.2011.5991712
