Abstract
Abstract Plasmon nanoantennas are extensively used with molecular systems for chemical and biological ultra-sensing, for boosting the molecular emissive and energy transfer properties, for nanoscale catalysis, and for building advanced hybrid nanoarchitectures. In this perspective, we focus on the latest developments of using plasmon nanoantennas for nanoscale chiral chemistry and for advancing molecular magnetism. We overview the decisive role nanoplasmonics and nano-optics can play in achieving chirally selective molecular synthesis and separation and the way such processes might be precisely controlled by potentially merging chirality and magnetism at the molecular scale. We give our view on how these insights might lead to the emergence of exciting new fundamental concepts in nanoscale materials science.
Highlights
Plasmon nanoantennas are extensively used with molecular systems for chemical and biological ultra-sensing, for boosting the molecular emissive and energy transfer properties, for nanoscale catalysis, and for building advanced hybrid nanoarchitectures
We focus on the latest developments of using plasmon nanoantennas for nanoscale chiral chemistry and for advancing molecular magnetism
We overview the decisive role nanoplasmonics and nano-optics can play in achieving chirally selective molecular synthesis and separation and the way such processes might be precisely controlled by potentially merging chirality and magnetism at the molecular scale
Summary
Chirality [18,19,20]. In a recent paper, from the Brasselet group, the role of lateral forces was used to understand a Newtonian Stern-Gerlach experiment, where a laser beam with spatially varying helicity gradient was used to displace microparticles in opposite directions depending on their handedness [21]. Superchiral electromagnetic near-fields (i.e. electromagnetic fields with optical chirality higher than that of free-propagating CP light) can be induced in the direct proximity of the nanostructures, interacting with CP or even linearly polarized light Such nanostructures may form extended arrays as photonic (semiconductor), plasmonic (nanometallic), or dielectric metasurfaces. The use of high-refractive-index semiconductor and dielectric nanoantennas presents the advantage of having strong electric and magnetic dipoles within the same nanostructure with the added benefit of low losses and high resonator quality factors. Such nanoantennas have been proposed by the group of Dionne for the generation of the chiral near-fields [7] (Figure 3C). An intriguing property of such high-index nanoantennas is the occurrence of
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