Surfactant Directed Synthesis of Intrinsically Chiral Plasmonic Nanostructures and Precise Tuning of their Optical Activity through Controlled Self‐Assembly

Author:

Maniappan Sonia1,Dutta Camelia1,Solís Diego M.2,Taboada José M.2,Kumar Jatish1ORCID

Affiliation:

1. Department of Chemistry Indian Institute of Science Education and Research (IISER) Tirupati Tirupati 517507 India

2. Departamento de Tecnología de los Computadores y de las Comunicaciones University of Extremadura 10003 Cáceres Spain

Abstract

AbstractFabrication and transmission of plasmonic chirality is a rapidly developing area of research. While nanoscale chirality is reasonably well explored, research on intrinsically chiral nanostructures, that has ramifications to origin of homochirality, is still in its infancy. Herein, we report the synthesis of dog‐bone shaped chiral gold nanostructures using a chiral cationic surfactant with excess ascorbic acid. Chiral growth is attributed to the specific binding and structure breaking ability of chiral surfactant and ascorbic acid. The controlled assembly of particles facilitated tuning and enhancement of chiral signals. Experimental observations were validated with theoretical simulations modelled in frequency domain with a surface integral‐equation parameterization. Work highlighting the generation and tuning of plasmonic chirality provides new insights into the understanding of intrinsic chirality and paves way for their application in enantioselective catalysis and biosensing.

Publisher

Wiley

Subject

General Medicine

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