Synthesis of new type photo-induced materials using sigma-conjugated polysilanes as an electron donor

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550052
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Organic chemistry
• Research Institution: Tottori University
• Principal Investigator: NANJO Masato 鳥取大学, 工学(系)研究科(研究院), 教授 (50302352)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ポリシラン / デンドリマー / フラーレン / 光起電力材料 / 紫外可視吸収スペクトル / 蛍光スペクトル

Outline of Final Research Achievements

Polysilanes have attracted much attention as the electronic properties arising from σ-conjugation along the Si-Si backbone. Despite some reports on a physical mixing polysilanes with fullerene, C60-grafted linear type polysilanes or C60-subtituted highly branched polysilanes, polysilane dendrimers, had never been synthesized and well characterized. In this study, synthesis of the linear-type polysilanes and branched-type polysilane dendrimers containing C60 by covalent bonding were successful. Characterization and electronic spectra (UV-vis and emission) for the resulting C60-grafted polysilanes and fulleropolysilane dendrimers were also investigated. Especially diminished fluorescence spectra for C60-grafted polysilanes under the condition of 310 nm excite wavelength was observed, suggesting that the light emitted charge transfer took place from sigma-conjugated Si-Si backbone to the fullerene.

Free Research Field

有機金属化学