Plasmon-Resonant Optics on an Indium–Tin-Oxide Film for Exciting a Two-Photon Photochromic Reaction
Author(s) -
Takao Ochiai,
Katsuhiro Isozaki,
Francesca Pincella,
Tomoya Taguchi,
Koh-ichi Nittoh,
Kazushi Miki
Publication year - 2013
Publication title -
applied physics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.911
H-Index - 94
eISSN - 1882-0786
pISSN - 1882-0778
DOI - 10.7567/apex.6.102001
Subject(s) - photochromism , materials science , indium tin oxide , optoelectronics , surface plasmon resonance , plasmon , colloidal gold , diarylethene , optics , nanoparticle , surface plasmon , localized surface plasmon , layer (electronics) , nanotechnology , physics
Two-dimensional arrays of gold nanoparticles (AuNPs) as localized surface plasmon-resonant (LSPR) optics on a transparent conductive layer of indium–tin-oxide (ITO) were successfully fabricated. The typical surface coverage of the 10 nm sized AuNPs is over 87% for on ITO film roughness of ±0.2 nm. The LSPR wavelength is tunable in the range of 622–905 nm. By adjusting the LSPR wavelength to 905 nm at peak, two-photon photochromic reaction of diarylethene derivative in solution phase was demonstrated with irradiation by an incoherent near-infrared light in the range of 0.017–0.033 W/cm2 instead of a laser, thanks to the AuNP two-dimensional array
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