Enhancing fluorescence of quantum dots by silica-coated gold nanorods under one- And twophoton excitation

Xin Li*, Fu Jen Kao, Chien Chin Chuang, Sailing He

*此作品的通信作者

研究成果: Article同行評審

70 引文 斯高帕斯(Scopus)

摘要

Nano-composites of quantum dots (QDs) and gold nanorods (GNRs) or silica-coated GNRs (GNRs-SiO2) were synthesized. The attached GNRs modify the excitation intensity and spontaneous emission of QDs through the surface plasmonic effects. The fluorescence from QDs is enhanced and can be optimized by modifying the thickness of silica coated on GNRs, under both one- and two-photon excitations. The measurements of fluorescence intensity and lifetime demonstrate that the enhancement may be attributed to the matching of the localized surface plasmon resonance of GNR to the excitation wavelength. In addition to enhancing QD-fluorescence in QD-GNR@SiO2, GNRs also present as an effective contrast agent for bio-imaging, through light scattering and or two-photon emission, as well as for photo-thermal therapy. The composite's multifunctional characteristics are highly valuable and to be exploited in bio-applications.

原文English
頁(從 - 到)11335-11346
頁數12
期刊Optics Express
18
發行號11
DOIs
出版狀態Published - 24 5月 2010

指紋

深入研究「Enhancing fluorescence of quantum dots by silica-coated gold nanorods under one- And twophoton excitation」主題。共同形成了獨特的指紋。

引用此