一、水相加熱法合成極小三角金奈米片狀結構     二、以植晶法製備具雙錐狀金奈米結構及其形狀轉換成多分支楊桃狀金奈米粒子

陳秋樺

doi:10.6843/NTHU.2007.00349

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一、水相加熱法合成極小三角金奈米片狀結構二、以植晶法製備具雙錐狀金奈米結構及其形狀轉換成多分支楊桃狀金奈米粒子

I. Thermal Aqueous Solution Approach for the Synthesis of Ultra-Small Gold Nanoplates II. Controlled Synthesis of Bipyramid-Shaped Gold Nanoparticles by Seed-Mediated Growth and Their Transformation into Star Fruit-Shaped Branched Nanocrystals

陳秋樺 , Masters　　Advisor：黃暄益　　

英文 DOI： 10.6843/NTHU.2007.00349

植晶；奈米粒子；奈米晶體；分支；截面；硝酸銀； seeding growth ； branch ； nanoparticle ； nanocrystal ； faceted

Abstract │ Reference (94) │ Times Cited (4) │ Altmetrics

Abstract 〈TOP〉

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Thermal Aqueous Solution Approach for the Synthesis of 
Ultra-Small Gold Nanoplates

We report a study on the thermal aqueous solution approach of ultrasmall triangular gold nanoplates with average widths of 40 ± 7 and 58 ± 10 nm. Because of their relatively uniform sizes, these tiny nanoplates can spontaneously self-assemble into some ordered 2-dimensional structures such as the hexagonally arranged pattern. UV-vis absorption spectroscopy showed that these nanoplates exhibit a strong absorption band at 590-602 nm and a weak and broadband centered at ~775-900 nm.

Controlled Synthesis of Bipyramid-Shaped Gold Nanoparticles by Seed-Mediated Growth and Their Transformation into Star Fruit-Shaped Branched Nanocrystals

We report a study on the synthesis of bipyramid-shaped gold nanoparticles by a seed-mediated approach and their transformation into star fruit-shaped branched nanocrystals by adding a certain amount of Ag+ ions to different solutions in the process. The colloidal of AgCl and AgBr nearby the side surfaces of gold seeds make the growth slowly, and gold atoms deposit at the twin boundaries and led to their unsymmetrical growth, all of which is the source of forming star fruit-shaped branched nanocrystals.

Reference ( 94 ) 〈TOP〉

(2) Nikoobakht, B.; El-Sayed, M. A. Chem. Mater. 2003, 15, 1957.
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(3) Nikoobakht, B.; El-Sayed, M. A. Langmuir 2001, 17, 6368.
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(8) Kim, F.; Song, J. H.; Yang, P. D. J. Am. Chem. Soc. 2002, 124, 14316.
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(12) Zhou, Y.; Wang, C. Y.; Zhu, Y. R.; Chen, Z. Y. Chem. Mater. 1999, 11, 2310.
連結：
(15) Sun, Y. G.; Xia, Y. N. J. Am. Chem. Soc. 2004, 126, 3892.
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