Biological Molecules-Governed Plasmonic Nanoparticle Dimers with Tailored Optical Behaviors

The Journal of Physical Chemistry Letters
Yuan ZhaoChuanlai Xu

Abstract

Self-assembly opens new avenues to direct the organization of nanoparticles (NPs) into discrete structures with predefined configuration and association numbers. Plasmonic NP dimers provide a well-defined system for investigating the plasmonic coupling and electromagnetic (EM) interaction in arrays of NPs. The programmability and structural plasticity of biomolecules offers a convenient platform for constructing of NP dimers in a controllable way. Plasmonic coupling of NPs enables dimers to exhibit tunable optical properties, such as surface-enhanced Raman scattering (SERS), chirality, photoluminescence, and electrochemiluminescence (ECL) properties, which can be tailored by altering the biomolecules, the building blocks with distinct compositions, sizes and morphology, the interparticle distances, as well as the geometric configuration of the constituent NPs. An overview of recent developments in biological molecules-governed NP dimers, the tailored optical behaviors, and challenges in enhancing optical signals and proposing plasmonic biosensors are discussed in this Perspective.

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Citations

Feb 6, 2020·Topics in Current Chemistry·Yuan ZhaoChuanlai Xu
May 29, 2019·ACS Applied Materials & Interfaces·Ye MaJoshua B Edel
Sep 4, 2019·ACS Nano·Judith LangerLuis M Liz-Marzán
Dec 27, 2018·ACS Applied Materials & Interfaces·Yuan ZhaoWei Ke
Dec 12, 2018·ACS Applied Materials & Interfaces·Yevgeniya KalachyovaOleksiy Lyutakov

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