Effects of plasmonic field due to gold nanoparticles and magnetic field on photocurrents of zinc porphyrin-viologen linked compound-gold nanoparticle composite films

Hiroaki Yonemura, Tomoki Niimi, Sunao Yamada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Composite films of zinc-porphyrin-viologen (ZnP-V2+) linked compound containing six methylene group [ZnP(6)V]-gold nanoparticles (AuNP) were fabricated by combining electrostatic layer-by-layer adsorption and the Langmuir-Blodgett method. The anodic photocurrents of the ZnP(6)V-AuNP composite films are higher than those of the ZnP(6)V films. The large photocurrents in ZnP(6)V-AuNP composite films are most likely attributable to the combination of localized surface plasmon resonance due to AuNP and photoinduced intramolecular electron transfer from excited state of ZnP to V2+. The photocurrents of the ZnP(6)V-AuNP composite films increase in the presence of magnetic field. The photocurrents increase with low magnetic fields (B : 150 mT) and are almost constant under high magnetic fields (B ; 150 mT). Magnetic field effects (MFEs) were clearly observed for both ZnP(6)V-AuNP composite films and ZnP(6)V films. The MFEs can be explained by a radical pair mechanism.

Original languageEnglish
Article number03DD05
JournalJapanese Journal of Applied Physics
Volume55
Issue number3
DOIs
Publication statusPublished - Mar 2016

Fingerprint

Gold compounds
Porphyrins
Composite films
Photocurrents
porphyrins
photocurrents
Zinc
zinc
Gold
gold
Magnetic fields
Nanoparticles
nanoparticles
composite materials
Magnetic field effects
magnetic fields
Surface plasmon resonance
Excited states
Electrostatics
surface plasmon resonance

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Effects of plasmonic field due to gold nanoparticles and magnetic field on photocurrents of zinc porphyrin-viologen linked compound-gold nanoparticle composite films. / Yonemura, Hiroaki; Niimi, Tomoki; Yamada, Sunao.

In: Japanese Journal of Applied Physics, Vol. 55, No. 3, 03DD05, 03.2016.

Research output: Contribution to journalArticle

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