Development of light emitting devices using artificial photonic synthesis model dendrimers

使用人工光子合成模型树枝状聚合物开发发光器件

• 批准号: 18550122
• 负责人: KAWAI Hideki
• 金额: $ 2.26万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18550122/
• 关键词: Polymeric molecular structure; Photophysical properties; artificial photonic synthesis model; dendrimers; Emission

Polymer laser devices attracted considerable attention for the next generation optical fiber for communications. In this works, we focused attention on photosensitized dendrimers as a novel polymer laser medium and measured amplified spontaneous emission (ASE) by chromophores (emission center) excitation through intramolecular energy transfer.Novel photosensitized dendrimers were synthesized by combinatorial method employing direct coupling reactions of anthracene of branch units and perylene of a core unit. The fluorescence measurement with these dendrimers revealed that excitation of the anthracene groups led to the perylene core emissions, indicating efficient energy transfer should be involved.Spin-coated polystyrene thin films containing those dendrimers were excited by the third harmonic of pulsed Nd: YAG laser (355 nm). The full width at half maximum of emission band of dendrimers having inner shell anthracene was decreased with increasing pumping energy (FWHM=47 nm). The spectral narrowing were attributed to the amplified spontaneous emission. Meanwhile, the emission spectra were hardly changed in the dendrimers without inner shell anthracene chromophores (FWHM = 84 nm). These results suggested that amplified spontaneous emission is affected by the energy transfer efficiency.

聚合物激光器件对于下一代通信光纤引起了广泛关注。在这项工作中，我们重点关注光敏树枝状聚合物作为一种新型聚合物激光介质，并通过分子内能量转移测量发色团（发射中心）激发的放大自发发射（ASE）。采用蒽直接偶联反应的组合方法合成了新型光敏树枝状聚合物支链单元和核心单元的苝。这些树枝状聚合物的荧光测量表明，蒽基团的激发导致苝核心发射，表明应该涉及有效的能量转移。含有这些树枝状聚合物的旋涂聚苯乙烯薄膜被脉冲Nd：YAG激光的三次谐波激发（ 355 纳米）。具有内壳蒽的树枝状聚合物的发射带半峰全宽随着泵浦能量的增加而减小(FWHM＝47nm)。光谱变窄归因于自发发射的放大。同时，没有内壳蒽发色团的树枝状聚合物的发射光谱几乎没有变化（FWHM = 84 nm）。这些结果表明，放大的自发发射受到能量转移效率的影响。

项目成果

Evaluation of energy transfer in perylene-cored anthracene dendrimers

• DOI: 10.1039/b606215f
• 发表时间: 2006-01-01
• 期刊: CHEMICAL COMMUNICATIONS
• 影响因子: 4.9
• 作者: Takahashi, Masaki;Morimoto, Hironao;Yamaguchi, Kentaro
• 通讯作者: Yamaguchi, Kentaro

Construction of reversed micelle nanoclusters based on anthracene-perylenelight- harvesting antenna molecules

基于蒽-苝收光天线分子的反胶束纳米团簇的构建

• 发表时间: 2007
• 作者: S. Kutsumizu;H. Mori;M. Fukatami;K. Saito;M.Takahashi;Y.Hasegawa;K.Nakamura;M. Takahashi;M. Takahashi;K.Nakamura;M.Takahashi;M. Takahashi;M. Takahashi;川井秀記;M.Takahashi;M.Takahashi;M. Takahashi;川井秀記;高橋雅樹;H. Kawai;高橋雅樹;川井秀記;高橋雅樹;川井秀記;M. Takahashi;H. Kawai;川井秀記;H. Kawai;川井秀記;高橋雅樹;H. Kawai;M. Takahashi
• 通讯作者: M. Takahashi

光捕集機能を有するデンドリマーの増幅自然放出光

具有光捕获功能的树枝状聚合物的放大自发发射

• 发表时间: 2006
• 作者: 高橋雅樹;M. Takahashi;川井秀記
• 通讯作者: 川井秀記

Highly ordered structure control and light emit ting application of photosensitized dendrimers

光敏树枝状聚合物的高度有序结构控制及其发光应用

• 发表时间: 2007
• 作者: S. Kutsumizu;H. Mori;M. Fukatami;K. Saito;M.Takahashi;Y.Hasegawa;K.Nakamura;M. Takahashi;M. Takahashi;K.Nakamura;M.Takahashi;M. Takahashi;M. Takahashi;川井秀記;M.Takahashi;M.Takahashi;M. Takahashi;川井秀記;高橋雅樹;H. Kawai;高橋雅樹;川井秀記;高橋雅樹;川井秀記;M. Takahashi;H. Kawai;川井秀記;H. Kawai;川井秀記;高橋雅樹;H. Kawai
• 通讯作者: H. Kawai

Enhanced Lasing Properties of Dissyimnetric Eu(III) Complex with Bidentate Phosphine Ligands

双齿膦配体二对称 Eu(III) 配合物增强激光性能

• 发表时间: 2007
• 期刊: J.Phys.Chem.A 111
• 作者: S. Kutsumizu;H. Mori;M. Fukatami;K. Saito;M.Takahashi;Y.Hasegawa;K.Nakamura;M. Takahashi;M. Takahashi;K.Nakamura
• 通讯作者: K.Nakamura