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Waveguiding molecular fiber self-assembled from organic dye molecules

由有机染料分子自组装的波导分子纤维

基本信息

批准号：
18550135
负责人：
TAKAZAWA Ken
金额：
$ 2.62万
依托单位：
National Institute for Materials Science
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-18550135/
关键词：
Organic dye Self-assembly Molecular fiber Optical waveguide 超分子ナノ材料光物性

项目摘要

Guiding and manipulating light on nano- to micrometer scales are key technologies to realize miniaturized photonic circuits, which have promising applications in high-speed microprocessors and telecommunication devices. Therefore, active dielectric waveguides on such scales constructed from semiconductors and organic materials have been intensively studied. Photonic crystals and plasmon waveguides have also attracted a great deal of attention due to their potential for manipulating light on the nanometer scale.We found that the organic dye molecule thiacyanine in aqueous solution self-assembles into fiber-shaped aggregates with a length of up to〜250μm that function as the active waveguides. The fibers are highly flexible and can be bent with a radius of curvature down to the sub-micrometer range. The waveguiding efficiencies (optical losses) of the bent fibers were quantitatively investigated by a newly developed laser scanning optical microscopy. It was found that the bending loss of the fibers is significantly low.We attempted to control the shape of the thiacyanine fiber by controlling the self-assembly process. Chloroform solutions of thiacyanine having long alkyl groups were drop-cast on a glass under highly humid conditions. It was found that well-defined rings with diameters of 5-30 μm were self-assembled after the solution were evaporated. It was found that the rings guided their fluorescence along the rings.

在纳米到微米尺度上引导和操纵光是实现微型化光子电路的关键技术，在高速微处理器和电信设备中具有广阔的应用前景。因此，由半导体和有机材料构造的这种尺度的有源介质波导已被深入研究。光子晶体和等离子体激元波导也因其在纳米尺度上操纵光的潜力而引起了人们的极大关注。我们发现有机染料分子硫菁在水溶液中自组装成纤维状聚集体，其长度可达250μm，可用作有源波导。这种纤维具有高度柔性，可以弯曲，曲率半径可达亚微米范围。利用激光扫描光学显微镜对弯曲光纤的波导效率（光损耗）进行了定量研究。我们尝试通过控制自组装过程来控制硫菁纤维的形状。在高度潮湿的条件下，将具有长烷基的噻菁的氯仿溶液滴铸在玻璃上。结果表明，溶液蒸发后，自组装形成了直径为5-30 μm的环状结构。发现环引导它们的荧光沿着环。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Optical waveguide self-assembled from organic dye molecules

由有机染料分子自组装的光波导

DOI：
发表时间：
2006
期刊：
影响因子：
0
作者：
K. Fujiwara;A. Ramesh;T. Maki;H. Hasegawa;K. Ueda;高澤健;K. Takazawa
通讯作者：
K. Takazawa

有機色素分子の自己組織化による微小光導波路

由有机染料分子自组装形成的微观光波导

DOI：
发表时间：
2006
期刊：
影响因子：
0
作者：
K. Fujiwara;A. Ramesh;T. Maki;H. Hasegawa;K. Ueda;高澤健
通讯作者：
高澤健

Flexibility and bending loss of waveguiding molecular fibers self-assembled from thiacyanine dye

硫氰染料自组装波导分子纤维的柔韧性和弯曲损耗

DOI：
发表时间：
2008
期刊：
Chemical Physics Letters 452
影响因子：
0
作者：
M. Azizur Rahman;H. Hasegawa;M. Mahfuzur Rahman;M. A. Majid Miah;A. Tasmin;K.Takazawa
通讯作者：
K.Takazawa

Waveguiding Properties of Fiber-Shaped Aggregates Self-Assembled from Thiacyanine Dye Molecules