Chapter 7
Plasmon-Associated Control of Chemical
Reaction at Nanometer Scale
Shuichi Toyouchi, Tomoko Inose, Kenji Hirai, and Hiroshi Uji-i
Abstract In this chapter, we introduce multiphoton photochromic reversible reaction in a diarylethene derivative at nanometer scale much beyond the diffraction
limit. For this, we have utilized nonlinear plasmonics along a plasmonic waveguide, particularly on the chemically synthesized silver nanowire. Propagating nearfield surface plasmons excited by near-infrared femtosecond laser pulses successfully excite diarylethene derivatives surrounding a silver nanowire. Three-photon
cyclization and two-photon cycloreversion reaction induced through the propagating
surface plasmon polaritons were visualized by means of fluorescence imaging. We
demonstrated one-color near-infrared laser reversible control by tuning the laser
power.
Keywords Multiphoton photochromic reaction · Fluorescent diarylethene · Silver
nanowire · Plasmonic waveguiding · Nonlinear optical effects · Second-harmonic
generation
7.1 Introduction (Plasmonic Waveguiding on Silver
Nanowire)
The plasmonic waveguide effect arises from the strong coupling of light to collective electron motions and allows for the confinement and propagation of optical
fields on sub-diffraction limit sized metallic structures. It has the potential to miniaturize photonic and optoelectronic devices to the nanoscale. Among various metal
nanostructures for plasmonic waveguiding, chemically synthesized silver nanowires
S. Toyouchi · H. Uji-i (B)
Department of Chemistry, KU Leuven, Heverlee, Flemish-Brabant 3001, Belgium
e-mail: hiroshi.ujii@es.hokudai.ac.jp; hiroshi.ujii@kuleuven.be
S. Toyouchi
e-mail: toyo.toyouchi@kuleuven.be
T. Inose · K. Hirai · H. Uji-i
Research Institute for Electronic Science (RIES), Hokkaido University, Sapporo, Hokkaido
011-0020, Japan
© Springer Nature Singapore Pte Ltd. 2020
H. Miyasaka et al. (eds.), Photosynergetic Responses in Molecules
and Molecular Aggregates, https://doi.org/10.1007/978-981-15-5451-3_7
117
Plasmon-Associated Control of Chemical
Reaction at Nanometer Scale
Shuichi Toyouchi, Tomoko Inose, Kenji Hirai, and Hiroshi Uji-i
Abstract In this chapter, we introduce multiphoton photochromic reversible reaction in a diarylethene derivative at nanometer scale much beyond the diffraction
limit. For this, we have utilized nonlinear plasmonics along a plasmonic waveguide, particularly on the chemically synthesized silver nanowire. Propagating nearfield surface plasmons excited by near-infrared femtosecond laser pulses successfully excite diarylethene derivatives surrounding a silver nanowire. Three-photon
cyclization and two-photon cycloreversion reaction induced through the propagating
surface plasmon polaritons were visualized by means of fluorescence imaging. We
demonstrated one-color near-infrared laser reversible control by tuning the laser
power.
Keywords Multiphoton photochromic reaction · Fluorescent diarylethene · Silver
nanowire · Plasmonic waveguiding · Nonlinear optical effects · Second-harmonic
generation
7.1 Introduction (Plasmonic Waveguiding on Silver
Nanowire)
The plasmonic waveguide effect arises from the strong coupling of light to collective electron motions and allows for the confinement and propagation of optical
fields on sub-diffraction limit sized metallic structures. It has the potential to miniaturize photonic and optoelectronic devices to the nanoscale. Among various metal
nanostructures for plasmonic waveguiding, chemically synthesized silver nanowires
S. Toyouchi · H. Uji-i (B)
Department of Chemistry, KU Leuven, Heverlee, Flemish-Brabant 3001, Belgium
e-mail: hiroshi.ujii@es.hokudai.ac.jp; hiroshi.ujii@kuleuven.be
S. Toyouchi
e-mail: toyo.toyouchi@kuleuven.be
T. Inose · K. Hirai · H. Uji-i
Research Institute for Electronic Science (RIES), Hokkaido University, Sapporo, Hokkaido
011-0020, Japan
© Springer Nature Singapore Pte Ltd. 2020
H. Miyasaka et al. (eds.), Photosynergetic Responses in Molecules
and Molecular Aggregates, https://doi.org/10.1007/978-981-15-5451-3_7
117