Chirality conferral enables the observation of hyper-Raman optical activity

IF 32.3 1区 物理与天体物理 Q1 OPTICS
Robin R. Jones, John F. Kerr, Hyunah Kwon, Samuel R. Clowes, Ruidong Ji, Emilija Petronijevic, Liwu Zhang, G. Dan Pantoș, Brian Smith, Tim Batten, Peer Fischer, Daniel Wolverson, David L. Andrews, Ventsislav K. Valev
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引用次数: 0

Abstract

Chirality conferral is fundamental for understanding the origin of life, and it is of direct importance for synthesizing new pharmaceuticals in the face of growing antibiotic resistance. Human-made, self-assembling nanostructures replicate the biological chirality conferral processes utilizing covalent and non-covalent bonds. However, chirality conferral from one form of matter to another via electromagnetic fields is more subtle and less explored. Here we report chirality conferral between gold nanohelices and achiral molecules (crystal violet). This conferral enables the experimental observation of a physical effect predicted in 1979—hyper-Raman optical activity. To benefit from Fermi’s golden rule, the chirality conferral system was designed as doubly resonant, with the nanohelices and molecules resonating at the fundamental frequency and at the second-harmonic, respectively. We provide a theoretical framework for our results that expands the original mathematical formalism to include surface-enhanced hyper-Raman scattering and the chirality conferral process. Our results demonstrate that field-driven chirality conferral mechanisms are opening up entire fields of research, as exemplified by the discovery of a physical phenomenon. Theoretically predicted in 1979, hyper-Raman optical activity is now experimentally observed through chirality conferral from the electromagnetic field of chiral plasmonic gold nanohelices to crystal violet molecules that are achiral, sparking new science at the organic–inorganic interface.

Abstract Image

Abstract Image

手性赋予可观测超拉曼光学活动
手性赋予是了解生命起源的基础,面对日益增长的抗生素耐药性,手性赋予对合成新药具有直接的重要意义。人造自组装纳米结构利用共价键和非共价键复制了生物手性赋予过程。然而,通过电磁场从一种物质形式到另一种物质形式的手性赋予过程更为微妙,探索较少。在此,我们报告了金纳米螺旋与非手性分子(紫水晶)之间的手性赋予。这种禀赋使我们能够在实验中观测到 1979 年预测的物理效应--超拉曼光学活动。为了受益于费米黄金定律,手性赋予系统被设计为双共振,纳米螺旋和分子分别在基频和二次谐波上共振。我们为研究结果提供了一个理论框架,扩展了原始数学形式主义,将表面增强超拉曼散射和手性赋予过程纳入其中。我们的结果表明,场驱动的手性赋予机制正在开辟整个研究领域,一个物理现象的发现就是例证。
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来源期刊
Nature Photonics
Nature Photonics 物理-光学
CiteScore
54.20
自引率
1.70%
发文量
158
审稿时长
12 months
期刊介绍: Nature Photonics is a monthly journal dedicated to the scientific study and application of light, known as Photonics. It publishes top-quality, peer-reviewed research across all areas of light generation, manipulation, and detection. The journal encompasses research into the fundamental properties of light and its interactions with matter, as well as the latest developments in optoelectronic devices and emerging photonics applications. Topics covered include lasers, LEDs, imaging, detectors, optoelectronic devices, quantum optics, biophotonics, optical data storage, spectroscopy, fiber optics, solar energy, displays, terahertz technology, nonlinear optics, plasmonics, nanophotonics, and X-rays. In addition to research papers and review articles summarizing scientific findings in optoelectronics, Nature Photonics also features News and Views pieces and research highlights. It uniquely includes articles on the business aspects of the industry, such as technology commercialization and market analysis, offering a comprehensive perspective on the field.
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