Highly stable Ag–Au nanoplates and nanoframes for two-photon luminescence

Jingsong Sun; Xiaolei Wang; Junfeng Liu; Pengbo Wan; Qing Liao; Feng Wang; Liang Luo; Xiaoming Sun

doi:10.1039/C4RA06514J

Highly stable Ag–Au nanoplates and nanoframes for two-photon luminescence†

Jingsong Sun,^ab Xiaolei Wang,^a Junfeng Liu,^a Pengbo Wan,^a Qing Liao,^c Feng Wang,^b Liang Luo*^a and Xiaoming Sun^a

* Corresponding authors

^a State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, P.O. Box 98, Beijing 100029, P.R. China
E-mail: luoliang@mail.buct.edu.cn
Fax: +86-10-64425385
Tel: +86-10-64448751

^b Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China

^c Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing 100048, P.R. China

Abstract

Highly stable Ag–Au triangular nanoplates and nanoframes were fabricated through well controlled galvanic reaction, which showed tunable localized surface plasmon resonance (LSPR) and efficient two-photon luminescence with the guarantee of high stability under both strong near infrared laser and tough ion-contained environments. The two-photon absorption cross section (6.34 × 10⁴ GM) could reach double that of Au nanorods. As revealed by excitation wavelength dependent TPL spectra and the simulation of the localized electric field of the nanostructures, the TPL performance of the Ag–Au TNFs was possibly mainly determined by the matched LSPR absorbance and the Ag–Au alloys composition. The high stability and the strong TPL make the Ag–Au TNFs promising candidates for various nonlinear optical applications and further the understanding of the two-photon behavior of noble metals.

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DOI: https://doi.org/10.1039/C4RA06514J
Article type: Communication
Submitted: 02 Jul 2014
Accepted: 06 Aug 2014
First published: 06 Aug 2014

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RSC Adv., 2014,4, 35263-35267

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Highly stable Ag–Au nanoplates and nanoframes for two-photon luminescence

J. Sun, X. Wang, J. Liu, P. Wan, Q. Liao, F. Wang, L. Luo and X. Sun, RSC Adv., 2014, 4, 35263 DOI: 10.1039/C4RA06514J

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Highly stable Ag–Au nanoplates and nanoframes for two-photon luminescence†

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Highly stable Ag–Au nanoplates and nanoframes for two-photon luminescence

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