A Novel Synthesis of Bipyridine-Containing Hybrid Compounds Directed High Efficiency of the Electron Transfer and Their Functional Evaluation

一种新型含联吡啶杂化化合物的高效电子转移及其功能评价

基本信息

批准号：
09650943
负责人：
KATOH Akira
金额：
$ 1.28万
依托单位：
Seikei University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

The artificial duplication of photosynthesis is one of most challenging themes in a viewpoint of the efficient utilization of solar energy. Many chemists have focused on improvement of the efficiency of the electron transfer. In this project, I investigated a novel synthesis of bipyridine-containing hybrid compounds directed high efficiency of the electron transfer and their functional evaluation.1. A variety of pyridylpyridones bearing (p-substituted)benzene at CA position were prepared from (p-substituted)benzaldehydes via 2 steps. 2. Pyridylpyridones were subjected to the selective 0-alkylation to afford 2, 27-bipyridines bearing amino or carboxyl group at the side chain. 3. New 2, 2'-bipyridine-ruthenium complexes showed similar physical properties to the parent tris(2,2'-bipyridme)ruthenium(II) complex. 4. Hybrid compounds composed of L-ornithine or L-lysine, 2,2'-bipyridine, phenothiazine, and methyl viologen were synthesized using the stepwise coupling. 5. Hybrid compound-ruthenium(II) complexes showed characteristic MLCT bands around at 460 nm in MeCN.6. Emission life times and emission quantum yields of ruthenium complexes were measured in aqueous solutions under Ar atmosphere. PHIem (ca. 0.0012) and tern (ca. 25 ns) were dramatically decreased compared with the parent tris(2,2'-bipyridine)ruthenium complex.In conclusion, the present hybrid compound-ruthenium(II) complexes were demonstrated to be applicable to photocatalysts which showed high efficiency of the electron transfer.

在有效利用太阳能的角度，光合作用的人工重复是最具挑战性的主题之一。许多化学家都专注于提高电子传递效率。在这个项目中，我研究了含双吡啶的杂种化合物的新合成，该化合物指示了电子传递的高效率及其功能评估1。通过2个步骤，从（p取代的）苯甲醛制备了各种Ca位置的吡啶基吡啶酮（p-取代）苯。 2。吡啶基吡啶酮接受选择性0-烷基化，以提供2个轴承氨基的27-二吡啶并在侧链的羧基。 3。新2，2'Bipyridine-ruthenium络合物显示出与母体Tris（2,2'-Bipyridme）ruthenium（II）复合物相似的物理特性。 4。使用逐步耦合合成了由L-雌激素或L-赖氨酸，2,2'-二吡啶，苯噻嗪和甲基苯胺和甲基Viologen组成的杂种化合物。 5。杂化化合物正森植物（II）复合物在MECN.6中显示出460 nm的特征MLCT带。在AR大气下的水溶液中测量了氟化合物复合物的发射寿命和排放量子产率。与父型Tris（2,2'-Bipyridine）ruthenium complect相比，Phiem（Ca. 0.0012）和Tern（Ca. 25 ns）大幅降低。结论，目前的杂化化合物（II）复合物被证明适用于具有高效率的电子转移效率的光催化剂。