Artificial Plasmonic Molecules and Their Interaction with Real Molecules

Chemical Reviews
Gilad Haran, Lev Chuntonov

Abstract

Plasmonic molecules are small assemblies of nanosized metal particles. Interactions between the particles modify their optical properties and make them attractive for multiple applications in spectroscopy and sensing. In this review, we focus on basic properties rather than on applications. Plasmonic molecules can be created using either nanofabrication methods or self-assembly techniques in solution. The interaction of plasmonic molecules with light leads to excitations that are classified using the concept of normal modes. The simplest plasmonic molecule is a dimer of particles, and its lowest energy excitation takes the form of a symmetric dipolar mode. More complex excitations take place when a larger number of particles is involved. The gaps between particles in a plasmonic molecule form hotspots in which the electromagnetic field is concentrated. Introducing molecules into these hotspots is the basis of a vast spectrum of enhanced spectroscopies, from surface-enhanced Raman scattering to surface-enhanced fluorescence and others. We show in this review how these spectroscopic methods can be used to characterize the fields around plasmonic molecules. Furthermore, the strong fields can be used to drive new phenomena, from pl...Continue Reading

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Citations

Apr 9, 2020·International Journal of Molecular Sciences·Xue BaiLin Feng
Jan 26, 2020·Nature Communications·Ora BittonGilad Haran
Aug 11, 2020·The Journal of Chemical Physics·Lev Chuntonov, Igor V Rubtsov
Mar 17, 2019·Optics Express·Longkun YangZhipeng Li
Jul 23, 2021·The Journal of Physical Chemistry Letters·Bar CohnLev Chuntonov
Jul 26, 2018·The Journal of Physical Chemistry Letters·Bar CohnLev Chuntonov
Apr 13, 2019·The Journal of Physical Chemistry Letters·Anup GhoshLev Chuntonov
Apr 11, 2020·The Journal of Physical Chemistry. a·Ann-Kathrin GöppertHelmut Cölfen
Aug 18, 2021·The Journal of Physical Chemistry. a·Giulia GiannoneFabio Della Sala
Jan 9, 2019·Nano Letters·Alexander Al-ZubeidiChristy F Landes
Sep 21, 2019·ACS Nano·Hyeon-Ho JeongPeer Fischer
Feb 18, 2020·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Sören WasserrothStephanie Reich
Sep 1, 2021·Journal of the American Chemical Society·Qiong WuWeihong Tan
Oct 6, 2021·ACS Nano·Lauren A WarningStephan Link

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