Organic Inorganic Hybrid-Type Spin-polarized Nanoparticle

有机无机混合型自旋极化纳米粒子

基本信息

批准号：
15087101
负责人：
SUGAWARA Tadashi
金额：
$ 38.46万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

项目摘要

I. Negative magneto-resistance in spin-polarized molecular network connecting gold nano-particles(1) Spin-polarized molecular network composed of spin-polarized wire molecules and gold nanoparticles (d=4 nm) exhibited negative magneto-resistance (4% at 4.2 K, 6 T). (2) A network of a few numbers of nanoparticles was prepared on nano-gap electrodes and it exhibited the I-V characteristic of a Coulomb diamond. (3) Linear type wire molecules, e.g. oligothiophene 21mer (molecular length of 7nm), and three-branched wire molecules were synthesized.II. Coexisting system of conductivity and magnetism in ion radical salt of ETBN (1) Ion radical salt of ETBN exhibited the negative magneto-resistance (-5% at 11K 5T) for the first time as a genuine organic donor radical. (2) Non-linear conductivity was observed in an ion radical salt of the cross-cyclophane-type donor. The mechanism was reveled by X-ray crystal analysis under application of the electric current.III. Magnetic behavior of bio-minerallized nano-magnets in magnetotactic bacteria An assembly of nano-magnetites (d=65nm) bio-minerallized in magnetotactic bacteria exhibited negative magneto-resistance of 5% at 100 K.IV Novel NO-cage compound with high efficiency of photo-decomposition A substituent that induces intersystem-crossing or electron transfer was introduced to N-nitrosoaniline to enhance the quantum yield of photo-decomposition in order to develop versatile NO-cage compounds

I.连接金纳米颗粒的自旋偏振分子网络中的负磁耐药性（1）由自旋偏振电线分子和金纳米颗粒（d = 4 nm）组成的自旋极化分子网络表现出负磁磁抵抗（4％在4.2 k，6 t）。（2）在纳米间隙电极上制备了一些数量的纳米颗粒网络，并表现出库仑钻石的I-V特征。（3）线性型线分子，例如合成了寡噻吩21mer（分子长度为7nm）和三支线的电线分子。 ETBN的离子自由基（1）离子自由基盐中的电导率和磁性系统首次表现出负磁性（-5％为11K 5T），作为真正的有机供体自由基。（2）在跨环保型供体的离子自由基中观察到非线性电导率。该机制在应用电流的应用下通过X射线晶体分析陶醉。III。在磁性细菌中生物焊接的纳米磁铁的磁性行为磁性纳米磁铁矿的组装（D = 65nm）在磁性细菌中生物焊接的生物 - 磁性抗磁力耐药性在100 k.iv新颖的无晶子介绍或介绍剂量的高效率的效率的磁力抗性为5％ N-硝基苯胺可增强光分解的量子产率，以开发多功能的无箱化合物