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

Chih Ching Huang; Hao Ying Liao; Yen Chun Shiang; Zong Hong Lin; Zusing Yang; Huan Tsung Chang

doi:10.1039/b808594c

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

Chih Ching Huang, Hao Ying Liao, Yen Chun Shiang, Zong Hong Lin, Zusing Yang, Huan Tsung Chang^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

107 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	755-759
Number of pages	5
Journal	Journal of Materials Chemistry
Volume	19
Issue number	6
DOIs	https://doi.org/10.1039/b808594c
State	Published - 2009
Externally published	Yes

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title = "Synthesis of wavelength-tunable luminescent gold and gold/silver nanodots",

abstract = "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.",

author = "Huang, {Chih Ching} and Liao, {Hao Ying} and Shiang, {Yen Chun} and Lin, {Zong Hong} and Zusing Yang and Chang, {Huan Tsung}",

year = "2009",

doi = "10.1039/b808594c",

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pages = "755--759",

journal = "Journal of Materials Chemistry",

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AU - Huang, Chih Ching

AU - Liao, Hao Ying

AU - Shiang, Yen Chun

AU - Lin, Zong Hong

AU - Yang, Zusing

AU - Chang, Huan Tsung

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

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JO - Journal of Materials Chemistry

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

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