Development of photosensitized dendrimers for laser medium

用于激光介质的光敏树枝状聚合物的开发

• 批准号: 20550121
• 负责人: KAWAI Hideki
• 金额: $ 2.91万
• 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: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20550121/
• 关键词: 高分子構造・物性; 光物性; 光合成モデル; デンドリマー; 発光

Polymer laser devices attracted considerable attention for the next generation optical fibers. In this works, we focused attention on photosensitized dendrimers as a novel polymer laser medium and measured amplified spontaneous emission (ASE). The polystyrene thin films containing those dendrimers were excited by the third harmonic of pulsed Nd : YAG laser (355 nm). The emission intensities of dendrimers increased with an increase of the excitation energy. The threshold level of dendrimer having inner shell anthracene was much smaller than those of the dendrimers without inner shell anthracene chromophores. These results suggested that amplified spontaneous emission is affected by the geometry of photosensitized dendrimers.

聚合物激光器作为下一代光纤的代表性器件，引起了人们的广泛关注。在本论文中，我们将注意力集中在光敏树枝状大分子作为一种新型的聚合物激光介质，并测量了放大自发辐射（ASE）。用脉冲Nd：YAG激光的三次谐波（355 nm）激发含有这些树枝状大分子的聚苯乙烯薄膜。树枝状大分子的发光强度随激发能的增加而增加。具有蒽内壳结构的树枝状大分子的阈值水平比没有蒽内壳结构的树枝状大分子的阈值水平小得多。这些结果表明，光敏树枝状大分子的几何结构对放大自发辐射有影响。

项目成果

Absorption cross-section control of Eu (III) complexes for increase of amplified spontaneous emission excited by third harmonic of nanosecond Nd : YAG laser

Eu (III) 配合物的吸收截面控制可增加纳秒 Nd : YAG 激光三次谐波激发的放大自发发射

• 期刊: Journal of Alloys and Compounds (in press)
• 作者: G. X. Liu;H. Yang;S. Nishihara;X. M. Ren;Y. Hasegawa
• 通讯作者: Y. Hasegawa

Emission properties of Yb (III) complexes containing phosphine oxide derivatives

含有氧化膦衍生物的Yb(III)配合物的发射特性

• 发表时间: 2009
• 作者: G.X.Liu;H.Xu;S.Nishihara;X.M.Ren;H. Kawai
• 通讯作者: H. Kawai

ローダミン色素をコアに配した光捕集デンドリマー分子システムの合成とスペクトル特性

罗丹明染料核吸光树枝状分子体系的合成及光谱特性

• 发表时间: 2008
• 作者: 高橋雅樹;川井秀記;仙石哲也;依田秀実
• 通讯作者: 依田秀実

Enhanced deep-red luminescence of tris(hexafluoroacetylacetonato) Sm(III) complex with phenanthroline in solution by control of ligand coordination

通过控制配体配位增强溶液中三（六氟乙酰丙酮）Sm(III)络合物与菲咯啉的深红色发光

• 发表时间: 2008
• 期刊: Journal of Physical Chemistry, A 112
• 作者: Y.Hasegawa;S.Tsuruoka;T.Yoshida;H.Kawai T.Kawai
• 通讯作者: H.Kawai T.Kawai

Mechanistic investigation of energy transfer in perylene-cored anthracene dendrimers

• DOI: 10.1039/b716908f
• 发表时间: 2008-03
• 期刊: New Journal of Chemistry
• 影响因子: 3.3
• 作者: Masaki Takahashi;H. Morimoto;Kentaro Miyake;H. Kawai;Y. Sei;K. Yamaguchi;T. Sengoku;H. Yoda