Enhancement of a Two-Photon-Induced Reaction in Solution Using Light-Harvesting Gold Nanodimer Structures.
We performed a quantitative analysis of plasmon-assisted two-photon photochromic reactions on light-harvesting gold nanodimer structures. Our strategy for the quantitative analysis of two-photon-induced photochemical reactions on gold nanostructures is using not only a confined photochemical reaction chamber but also a solution system. The strong intensification of near-field light at the nanogap positions on gold nanodimer pairs promoted two-photon absorption by a closed-form diarylethene derivative, resulting in highly efficient photochromic conversion to the open-form structure.
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.|‡State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
Botao
B
Wu
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.|§PRESTO, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan.
Kosei
K
Ueno
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
Yukie
Y
Yokota
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
Kai
K
Sun
‡State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
Heping
H
Zeng
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
Hiroaki
H
Misawa
gold nanoparticles; localized surface plasmon resonance; nanogap; photochromic reaction; two-photon-induced reaction