Chiral Plasmonic Hybrid Nanostructures: A Gateway to Advanced Chiroptical Materials

Abstract

Chirality introduces a new dimension of functionality to materials, unlocking new possibilities across various fields. When integrated with plasmonic hybrid nanostructures, this attribute synergizes with plasmonic and other functionalities, resulting in unprecedented chiroptical materials that push the boundaries of the system's capabilities. Recent advancements have illuminated the remarkable chiral light–matter interactions within chiral plasmonic hybrid nanomaterials, allowing for the harnessing of their tunable optical activity and hybrid components. These advancements have led to applications in areas such as chiral sensing, catalysis, and spin optics. Despite these promising developments, there remains a need for a comprehensive synthesis of the current state‐of‐the‐art knowledge, as well as a thorough understanding of the construction techniques and practical applications in this field. This review begins with an exploration of the origins of plasmonic chirality and an overview of the latest advancements in the synthesis of chiral plasmonic hybrid nanostructures. Furthermore, representative emerging categories of hybrid nanomaterials are classified and summarized, elucidating their versatile applications. Finally, the review engages with the fundamental challenges associated with chiral plasmonic hybrid nanostructures and offer insights into the future prospects of this advanced field.

Chiral Flipping in Viedma Deracemization

“…Deracemization is the process of converting a racemic mixture, which contains equal amounts of two enantiomers made up of chiral or achiral molecules, into a single enantiomerically pure form. − This process is highly significant and has garnered considerable interest due to its critical role in the field of chiral chemistry. In the pharmaceutical industry, for instance, access to enantiomerically pure drugs is vital since the two enantiomers can exhibit contrasted biological activities and side effects. − Furthermore, in agriculture, the use of enantiomerically pure compounds can lead to more targeted and efficient pest control, thus minimizing environmental impacts. − The advancements in deracemization techniques also drive innovation in the development of asymmetric catalysis and the synthesis of novel optical materials and chemicals. − …”

Precise Construction of Chiral Plasmonic Nanoparticles for Enantioselective Discrimination

“…Among those nanomaterials, chiral plasmonic nanostructures have attracted widespread attention because of their surface plasmon resonance (SPR) properties, which display satisfactory performance in guiding, controlling, and responding to light . Owing to localized surface plasmon resonance (LSPR), the enhancement on Raman signals of absorbed molecules as the surface-enhanced Raman scattering (SERS) effect has been proven as a powerful spectroscopic technique. − This method with high sensitivity, multiplexing capability, and label-free detection enables it as a valuable tool for identifying trace amounts of analytes and measuring molecular interactions.…”