Nanometer control in plasmonic systems through discrete layer-by-layer macrocycle-cation deposition

Steven J. Barrow, Aniello Palma, Bart De Nijs, Rohit Chikkaraddy, Richard W. Bowman, Jeremy J. Baumberg, Oren A. Scherman

Research output: Contribution to journalArticlepeer-review

2 Citations (SciVal)

Abstract

In this work, we demonstrate that coordination interactions between Fe3+ and cucurbit[7]uril (CB[7]) can be utilised to build up defined nanoscale spacing layers in metallic nanosystems. We begin by characterising the layer-by-layer deposition of CB[7] and FeCl3·6H2O coordination layers through the use of a Quartz-Crystal Microbalance (QCM) and contact angle measurements. We then apply this layered structure to accurately control the spacing, and thus optical properties, of gold nanoparticles in a Nanoparticle-on-Mirror (NPoM) structure, which is demonstrated via normalising plasmon resonance spectroscopy.

Original languageEnglish
Pages (from-to)8706-8710
Number of pages5
JournalNanoscale
Volume12
Issue number16
Early online date3 Apr 2020
DOIs
Publication statusPublished - 28 Apr 2020

Funding

S. J. B. acknowledges support from the European Commission for a Marie Curie Fellowship (NANOSPHERE, 658360). A. P. and O. A. S. acknowledge an ERC starting investigator grant (ASPiRe 240629) and EPSRC Programme Grant (NOtCH, EP/ L027151/1) for support. RC acknowledges support from the Dr Manmohan Singh scholarship from St. John’s College. BdN acknowledges support from the Leverhulme Trust and the Isaac Newton trust ECF. The authors would like to thank Dr Helena Shephered for valuable discussions.

ASJC Scopus subject areas

  • General Materials Science

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