SCHEDULED MAINTENANCE
Nanometer control in plasmonic systems through discrete layer-by-layer macrocycle–cation deposition†
Steven J.
Barrow, 
‡§a
Bart
de Nijs,
b
Rohit
Chikkaraddy,
b
Richard W.
Bowman,
||b
Oren A.
Scherman
*a
‡§a
Bart
de Nijs,
b
Rohit
Chikkaraddy,
b
Richard W.
Bowman,
||b
Oren A.
Scherman
*a
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.
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