Chiral nanoparticle assemblies: circular dichroism, plasmonic interactions, and exciton effects
Chiral nanoparticle assemblies: circular dichroism, plasmonic interactions, and exciton effects
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DOI：
10.1039/c1jm12345a
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Naik, Rajesh R.
中科院分区：
文献类型：
--
作者：
Govorov, Alexander O.;Gun'ko, Yurii K.;Naik, Rajesh R.
本文综述了近年来利用诱导光学手性和相关的圆二色性进行手性组装的研究进展。许多天然分子和生物分子是手性的，并且由于它们在大系综中惊人均匀的原子组成而表现出非常强的光学手性（圆二色性）。由于人工纳米结构的原子结构可能并不总是可控的或甚至是已知的，因此实现具有光学手性的人工纳米尺度系统是具有挑战性的。尽管如此，人工光学手征已经完成，这是本综述的主要范围。特别是，我们讨论了将手性分子，金属纳米晶体和半导体量子点的组件。等离子体激元诱导和等离子体激元增强的圆二色性效应出现在由金属纳米晶体构建的纳米尺度组件中，而激子和表面态相关的现象在与手性分子共轭的半导体量子点中观察到。
The paper reviews recent progress on chiral nanocrystal assemblies with induced optical chirality and related circular dichroism. Many natural molecules and biomolecules are chiral and exhibit remarkably strong optical chirality (circular dichroism) due to their amazingly uniform atomic composition in a large ensemble. It is challenging to realize artificial nanoscale systems with optical chirality since the atomic structure of artificial nanostructures may not be always controlled or even known. Nevertheless, the artificial optical chirality has been accomplished and it is the main scope of this review. In particular, we discuss assemblies incorporating chiral molecules, metal nanocrystals, and semiconductor quantum dots. Plasmon-induced and plasmon-enhanced circular dichroism effects appear in nanoscale assemblies built with metal nanocrystals, while excitonic and surface-states related phenomena are observed in semiconductor quantum dots conjugated with chiral molecules.