Single-Molecule Plasmon Sensing: Current Status and Future Prospects.

Single-Molecule Plasmon Sensing: Current Status and Future Prospects.
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单分子等离子体传感:当前状态和未来前景。

DOI:
10.1021/acssensors.7b00382
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发表时间:
2017-08-25
期刊:
影响因子:
8.9
通讯作者:
Zijlstra P
Zijlstra P
中科院分区:
化学1区
文献类型:
--
作者:
Taylor AB;Zijlstra P

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单分子检测长期以来依赖于高量子产率荧光团的荧光标记。等离子体增强检测通过允许弱发射和完全非荧光物质的直接光学检测来规避对标记的需要。本文综述了近年来利用等离子体金属纳米结构作为传感平台,特别是利用单粒子-单分子方法进行单分子检测的研究进展。在过去的十年中,等离子体增强的单分子检测的两种机制已被证明:(1)通过等离子体增强弱荧光生物分子的发射,或(2)通过监测由单分子相互作用诱导的等离子体共振的位移。我们开始的动机,关于单分子检测的重要性,等离子体检测提供的优势。我们描述了这两种检测机制,并讨论了挑战和潜在的解决方案。最后,我们强调了分析化学和医学诊断中令人兴奋的可能性。
Single-molecule detection has long relied on fluorescent labeling with high quantum-yield fluorophores. Plasmon-enhanced detection circumvents the need for labeling by allowing direct optical detection of weakly emitting and completely nonfluorescent species. This review focuses on recent advances in single molecule detection using plasmonic metal nanostructures as a sensing platform, particularly using a single particle–single molecule approach. In the past decade two mechanisms for plasmon-enhanced single-molecule detection have been demonstrated: (1) by plasmonically enhancing the emission of weakly fluorescent biomolecules, or (2) by monitoring shifts of the plasmon resonance induced by single-molecule interactions. We begin with a motivation regarding the importance of single molecule detection, and advantages plasmonic detection offers. We describe both detection mechanisms and discuss challenges and potential solutions. We finalize by highlighting the exciting possibilities in analytical chemistry and medical diagnostics.
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发表时间: 2014
期刊: Plasmonics (Norwell, Mass.)
影响因子: --
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