Controlling the passage of light through metal microchannels by nanocoatings of phospholipids.
The flow of polarized light through a metal film with an array of microchannels is controlled by the phase of an optically active, phospholipid nanocoating, even though the coating does not cover the open area of the microchannels. The molecular details of the assembly (DPPC phospholipid monolayer/bilayer on a hexadecanethiol monolayer on a copper- or nickel-coated microarray) were determined using the infrared, surface-plasmon-mediated, extraordinary transmission of the metal microarrays. Infrared absorption spectra with greatly enhanced absorptions by comparison to literature were recorded and used as a diagnostic for the phase, composition, and molecular geometry of these nanocoatings. This approach presents new tools for nanoscale construction in constricted microspaces, which may ultimately be useful with individual microchannels.
Teeters-Kennedy
Shannon M
SM
Department of Chemistry, The Ohio State University, Columbus, Ohio 43210-1173, USA.
Rodriguez
Kenneth R
KR
Rogers
Trisha M
TM
Zomchek
Keith A
KA
Williams
Shaun M
SM
Sudnitsyn
Alexandra
A
Carter
Lauren
L
Cherezov
Vadim
V
Caffrey
Martin
M
Coe
James V
JV
D003300:Copper / Q000737:chemistry*; D008027:Light; D008958:Models, Molecular; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D009532:Nickel / Q000737:chemistry*; D044367:Phase Transition; D010743:Phospholipids / Q000737:chemistry*
D010743:Phospholipids; D003300:Copper; D009532:Nickel