Synthesis of wavelength-tunable luminescent gold and gold/silver nanodots

被引：103

作者：

Huang, Chih-Ching ^{[2
]}

Liao, Hao-Ying ^{[1
]}

Shiang, Yen-Chun ^{[1
]}

Lin, Zong-Hong ^{[1
]}

Yang, Zusing ^{[1
]}

Chang, Huan-Tsung ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Natl Taiwan Ocean Univ, Inst Biosci & Biotechnol, Chilung 20224, Taiwan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 06期

关键词：

QUANTUM DOTS; HIGHLY FLUORESCENT; OPTICAL-PROPERTIES; CLUSTERS; NANOPARTICLES; SIZE; NANOCRYSTALS; COMPLEXES; PHOTOLUMINESCENCE; MICROEMULSIONS;

D O I：

10.1039/b808594c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper describes the preparation of wavelength-tunable luminescent Au nanodots (NDs) and Au/Ag NDs at room temperature. Controlling the molar ratios of tetrakis( hydroxymethyl) phosphonium chloride (THPC) to Au ions and of Ag ions to Au ions allows the preparation of different sizes of Au and Au/Ag nanoparticles. We then used 11-mercaptoundecanoic acid (11-MUA) to react with the as-prepared nanoparticles to prepare wavelength-tunable luminescent 11-MUA-Au NDs and 11-MUA-Au/Ag NDs, respectively. Our prepared luminescent NDs exhibit a number of attractive optical properties: tunable luminescence wavelengths (456-640 nm), long lifetimes (> 250 ns), and large Stokes shifts (> 100 nm). These properties suggest that the as-prepared 11-MUA-Au NDs and 11-MUA-Au/Ag NDs would be suitable for use in sensing applications after bio-conjugation.

引用

页码：755 / 759

页数：5

共 40 条

[1] Quantum dots as cellular probes [J].