Clarification of Interface Magnetization in Gold Nanostructures using Magnetization-Induced Second Harmonic Generation (MSHG) and Application for Nanomaterials

2014 Fiscal Year Final Research Report

• Project/Area Number: 25600006
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural chemistry
• Research Institution: Kyushu University
• Principal Investigator: YONEMURA HIROAKI 九州大学, 工学(系)研究科(研究院), 准教授 (40220769)
• Co-Investigator(Renkei-kenkyūsha): TAKAHASHI Yukina 九州大学, 大学院工学研究院, 助教 (10596076) ; TAKAHASHI Yukina 独立行政法人産業技術総合研究所, 九州センター, 研究員 (00399510)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 第二高調波発生 / 金ナノロッド / Langmuir-Blodgett法 / 局在表面プラズモン共鳴 / 蛍光増強 / 光電流 / 磁化誘起第二高調波発生 / スチルバゾリウム

Outline of Final Research Achievements

The photocurrents in copper phthalocyanine (CuPc)-gold nanorod (AuNR) composite films were larger than those in CuPc films as a reference. The enhancements of the photocurrents in CuPc-AuNR composite films due to AuNR increased with increasing of wavelength up to near-infrared region. The enhancements are attributable to localized surface plasmon resonance (LSPR) due to AuNR. The enhancements at near-infrared wavelength due to the longitudinal LSPR were larger than those at visible wavelength due to the transverse LSPR.
Second Harmonic Generation (SHG) in dye (stilbazolium derivative; C18Stil or Azobenzene derivative; C12Azo)-AuNR composite films were measured. The SH light intensities in C18Stil-AuNR composite films decreased as compared with those in C18Stil films. Also the SH light intensities in C12Azo-AuNR composite films were slightly enhanced as compared with those in C12Azo films.

Free Research Field

ナノ化学、磁気科学