Studies on the Excitation of a Surface-Modified Electrode by Surface Plasmon Field

表面等离子体场激发表面修饰电极的研究

• 批准号: 12650812
• 负责人: ISHIDA Akito
• 金额: $ 0.96万
• 依托单位: Kyoto Prefecture University (2001)Osaka University (2000)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650812/
• 关键词: surface plasmon; surface-modified electrodes; self-assembly monolayer; porphyrin; J-aggregates; near-IR excitation; field enhancement; nano-constructed surface; 表面修飾電極; 表面プラズモン増強電場; 顕微蛍光分光; 表面ナノ構造; 光電流発生; 蛍光免疫分析; 蛍光遺伝子分析; 電場増強効果; 薄膜太陽電池

In this study, the excitation mechanism of surface-modified gold electrode by the electromagnetic field of surface plasmon has been studied. Surface plasmon is charge density wave propagating on metal surface converted from the incident light. The field is strongly localized on the surface and suitable for excitation of photofunctional molecules attached on the gold surface. Moreover, the field intensity is remarkably enhanced compared with the incident light. These features have offered considerable advantages over conventional direct photoexcitation upon excitation of porphyrin self-assembly monolayers on a gold surface. Particularly, surface plasmon excitation is effective for the excitation of very slight absorption bands in near-IR due to the molecular aggregation, because the field enhancement increases with increasing wavelength of the incident light. Localization of the enhanced surface plasmon field into the wavelength-sized wells on the gold surface also has been studied for the practical applications.

本研究探讨了表面等离子体激元电磁场对表面修饰金电极的激发机理。表面等离子体激元是入射光在金属表面传播时产生的电荷密度波。该场强烈地定位在表面上，并且适合于激发附着在金表面上的光功能分子。此外，与入射光相比，场强度显著增强。这些功能提供了相当大的优势，在传统的直接光激发激发卟啉自组装单层在金表面上的激发。特别地，表面等离子体激元激发对于由于分子聚集而在近红外中激发非常轻微的吸收带是有效的，因为场增强随着入射光的波长增加而增加。为了实际应用，还研究了增强的表面等离子体场在金表面波长大小的威尔斯阱中的局域化。

项目成果

石田昭人: "ナノ構造化金表面における光の局在化と光化学への応用"レーザー研究. 29. 739-743 (2001)

Akito Ishida：“纳米结构金表面的光定位及其在光化学中的应用”激光研究 29. 739-743 (2001)。

Akito ISHIDA: "Fluorescenct Analysis Element with the Use of Metallic Nanowell and Process for Producing the Same"PCT/JP02/00026, WO 02/056012 A1.

Akito ISHIDA：“使用金属纳米孔的荧光分析元件及其生产方法”PCT/JP02/00026，WO 02/056012 A1。

Akito ISHIDA: "Method for Preparing Ultra Fine Particle of Metal Chalcogenide"PCT/JPO1/10264, EPC 1243553.

Akito ISHIDA：“金属硫属化物超细颗粒的制备方法”PCT/JPO1/10264，EPC 1243553。

Akito Ishida: "Photocurrent Generation of a Porphyrin Self-Assembly Monolayer on a Gold Film Electrode by Surface Plasmon Excitation using Near-IR Light"Chem.Phys.Lett.. 342. 242-246 (2000)

Akito Ishida：“使用近红外光通过表面等离子体激发在金膜电极上产生卟啉自组装单层的光电流”Chem.Phys.Lett.. 342. 242-246 (2000)

Akito ISHIDA: "Localization of Photon Energy on the Nano-constructed Gold Surface and Photochemical Applications"Laser Research. 29. 739-743 (2001)

Akito ISHIDA：“纳米结构金表面上光子能量的局域化和光化学应用”激光研究。