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学科主题: 基础医学
题名:
Interaction between CdSeS Quantum Dots and Gold Nanoparticles in Solution
作者: Han Rong-Cheng1; Yu Min1; Sha Yin-Lin1,2
关键词: Quantum dots ; Gold nanoparticles ; Quenching ; Energy transfer
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2011
DOI: 10.3866/PKU.WHXB20110135
卷: 27, 期:1, 页:255-261
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
关键词[WOS]: ENERGY-TRANSFER ; SEMICONDUCTOR NANOCRYSTALS ; FRET ; PHOTOLUMINESCENCE ; POLYELECTROLYTE ; LUMINESCENCE ; BIOSENSORS ; POLYMER ; LABELS ; DECAY
英文摘要:

We studied the interaction between CdSeS quantum dots (QDs) and gold nanoparticles (AuNPs) in solution. We found that the photoluminescence (PL) intensity of the QDs was efficiently quenched by the AuNPs with extraordinarily high Stern-Volmer quenching constant (K-sv) values that approach 10(8) L . mol(-1). The quenching efficiency is strongly related to the spectral overlap and the distance between the QDs and AuNPs and is independent of solvent polaritym, ion strength, and pH value. These results suggest that this superquenching behavior can be attributed to a long-range (Forster-type) energy transfer. Our findings allow for the design of exquisite multiple Forster resonance energy transfer (FRET)based biosensors for the highly sensitive and simultaneous monitoring of multiple molecules in live cells.

语种: 中文
所属项目编号: 2007CB935801
项目资助者: National Key Basic Research Program of China
WOS记录号: WOS:000285781600037
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.bjmu.edu.cn/handle/400002259/61429
Appears in Collections:基础医学院_生物物理学系_期刊论文

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作者单位: 1.Peking Univ, Sch Basic Med Sci, Dept Biophys, Beijing 100191, Peoples R China
2.Peking Univ, Biomed X Ctr, Beijing 100871, Peoples R China

Recommended Citation:
Han Rong-Cheng,Yu Min,Sha Yin-Lin. Interaction between CdSeS Quantum Dots and Gold Nanoparticles in Solution[J]. ACTA PHYSICO-CHIMICA SINICA,2011,27(1):255-261.
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