Studies on the Multi-responsible Molecular Systems Involving Visible Light Switching Using Radical Ions

利用自由基离子进行可见光切换的多响应分子系统的研究

基本信息

批准号：
09450319
负责人：
MAJIMA Tetsuro
金额：
$ 1.98万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

Radical ions have sharp and intense absorption bands in the visible wavelength range which depend on the structure and substituents of the radical ions. Therefore, it is suggested that radical ions can be excited by diode lasers, that undestructed reading of memory can be essentially performed with high sensitivity, and that triple memory of a molecule can be done with three independent characters of the neutral molecule and radical cation and anion of the molecule. Radical ions are used as starting material for developing of a new multiple-photoresponsible molecular system on the basis of their visile light switching characters. Since radical ions are well known to be generated from radiation reactions and are stable in the μs time scale in solution at room temperature, this study was carried out with a pulse radiolysis-laser flash photolysis combined method which is constructed at ISIR, Osaka University. Photoresponsiblity was examined through one-way photoisomerization of cis-stilbe … More ne radical cation to trans-stilbene radical cation, intermolecular electron transfer from pyrene radical anion in the photoexcited state to an electron acceptor such as bipheny1, and multiple-isomerizations of 1, 4-dipheny1-1, 3-butadiene radical cation and 1, 6-dipheny1-1, 3, 5-hexatriene radical cation. On the basis of experimental results, a new idea of multiple memory involving a neutral mlecule and the radical ions is proposed and possibility of photon-mode memory with high density is suggested by reversible reactions of radical ions. Since photoresponsible reactions of radical ions are performed in an appropriate time range after irradiation of an electron pulse, they are established to be electron-pulse gated photoresponsible reactions. Moreover, various types of molecules are synthesized to be suitable for the multi-responsible molecular systems involving visible light switching using radical ions. Radical ions of the synthetic molecular systems were used to develop new photoresponsible functional materials with high reliability and high speed from visible light as the information source. Less

自由基离子在可见的波长范围内具有锋利和强烈的滥用带，该波段取决于自由基离子的结构和亚电位。因此，建议从二极管激光器可以激发自由基离子，可以用高灵敏度来实现记忆的读数，并且可以使用中性分子的三个独立特征和分子的自由基阳离子和阴离子来完成分子的三重记忆。自由基离子被用作基于其访问的光开关字符，开发新的多孔辅导分子系统的起始材料。由于众所周知，自由基是由辐射反应产生的，并且在室温下的溶液中稳定，因此该研究是通过大阪大学Isir构建的脉冲放射性激光光解相结合方法进行的。通过单程光异构化顺序分散性……更自由基阳离子到反式阳离子自由基阳离子，分子间电子从光激发状态中的pyrene自由基转移到电子受体到biphenyl1等电子受体，例如biphenyl1，以及1、4-DIP辐射的1,4-DIPARDIPARDIPARDIPAD， 6-二苯基1-1、3、5-己二烯自由基阳离子。基于实验结果，提出了一个新的记忆涉及中性mlecule和自由基离子的新想法，并可能通过自由基离子的可逆反应提出了高密度的光子模式记忆。由于电子脉冲照射后，在适当的时间范围内进行了自由基的光载反应，因此将它们确定为电子脉冲门控光载的反应。此外，合成了各种类型的分子，适用于使用自由基离子可见光开关的多重责任分子系统。合成分子系统的根部离子用于开发具有高可靠性和高速的新型光载功能材料作为信息源。较少的