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

fYear

2011

fDate

21-24 June 2011

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoelectronics Conference (INEC), 2011 IEEE 4th International

Conference_Location

Tao-Yuan

ISSN

2159-3523

Print_ISBN

978-1-4577-0379-9

Electronic_ISBN

2159-3523

Type

conf

DOI

10.1109/INEC.2011.5991712

Filename

5991712