Fabrication of Phorochromic Molecular Arrays and Single Molecule Photoisomerization

光致变色分子阵列的制备和单分子光异构化

基本信息

批准号：
16510090
负责人：
OTSUKI Joe
金额：
$ 2.5万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16510090/
关键词：
Photochromism Porphyrin Axial Coordination High-Density Memory Molecular Switch Energy Transfer Electron Transfer Scanning Tunneling Microscopy HOPG STM 超分子化学分子メモリ分子アレイ

项目摘要

It is expected for photochromic molecules to play a role in molecular electronics as a conductivity switch in molecular wires and a single molecule memory. The purpose of this work is to establish the fabrication method for high-density arrays of photochromic compounds, to reveal changes in molecular conductivities by photochromic reactions on an individual molecule basis, and to fabricate a prototype of super-high density memory. We have achieved the following points in the past two years and obtained high-density arrays of photochromic compounds. The next challenge will be to obtain photoresponse on an individual molecule basis.1.Photochromism. We have revealed the characteristics of phenylazoimidazoles as a novel class of photochromes2.Fabrication of Arrays. We have fabricated high-density, ordered arrays of molecules, in particular porphyrins, which are expected to template the array formation for photochromic compounds through axial coordination, and revealed the structure at mole … More cular level.(1)We have shed light on the rotation of molecules with the array of double-decker porphyrins.(2)We have shown that two-dimensional patterning is possible by means of porphyrins with hydrogen bonding capability.(3)We have fabricated the arrays of tripod-type molecules, which are expected to be the pedestals for photochromes.3.Porphyrin Assemblies. We have constructed porphyrin assemblies, in particular to incorporate photochromic compounds, and revealed their functions.(1)We have constructed molecular assemblies consisting of three molecular components via axial coordination and revealed electron transfer processes in the assemblies.(2)We have realized remote control of fluorescence in a molecular assembly.(3)We have realized the control of fluorescence by means of complexation/decomplexation of an axial ligand or structural changes upon photochromic reactions.(4)We have found, in a porphyrin assembly, a fast energy transfer phenomenon, which is faster than expected from conventional mechanisms. Less

希望光致变色分子在分子电线和单个分子记忆中作为电导率转换中发挥作用。这项工作的目的是建立用于光致变色化合物的高密度阵列的制造方法，以揭示通过单个分子通过光致变色反应来揭示分子传导性的变化，并制造超高密度记忆的原型。在过去的两年中，我们达到了以下几点，并获得了光致变色化合物的高密度阵列。下一个挑战将是以单个分子为基础获得光响应。1。photochromism。我们已经揭示了苯唑咪唑作为新颖的光色类别的特征。阵列的制作。我们已经制造了高密度的分子阵列，尤其是卟啉，预计它们会通过轴向配位模板形成光色素化合物，并在分子上揭示了结构。（3）我们制造了三脚架型分子的阵列，预计将是光成色组的基座。3.porphyrinssblies.we我们构建的卟啉组件已经构建了卟啉组件，特别是在构建了摩尔群化合物，并构建了它们的功能。（2）我们已经意识到分子组装中荧光的远程控制。（3）我们已经通过络合/解剖来实现荧光的控制，轴向配体或结构性变化是对光参观反应的临时转移。机制。较少的