Development of organic superconductors and multifunctional supramolecules based on new π-elecfron systems

基于新型π电子体系的有机超导体和多功能超分子的发展

基本信息

项目摘要

In this research project, development of new organic conductors and superconductors based on new molecular design that is destabilization of stable molecular metals as seen in TTP(tetrathiafulvalen) and TTP(tetrathiapentalene) conductors has been conducted. For this purpose, new π-electron donors whose π-electron systems are reduce compared with those of the previous TTF and TTP donors have been designed and synthesized. Structures and physical properties of the conducting radical salts prepared from such π-reduced electron donors have been investigated and a new superconductor, (DODHT)_2BF_4・H_2O, was discovered. By investigating the insulating phase at ambient pressure of the pressure-induced superconductor, (DODHT)_2PF_6, by X-ray diffraction and magnetic susceptibility measurements, the insulator phase was a charge ordering state with stripe type charge pattern. Furthermore, measurement of the transport properties of this material under pressure more precisely, particularly around … More the boundary between superconducting and insulator phases, leads to the pressure-temperature phase diagram ; In the phase diagram, the superconducting and normal resistive states coexists above the pressure of 13 kbar, and the insulator phase exists immediately above the superconducting phase between 13.2 and 15.1 kbar. Because the clear insulator transition was observed in the transport measurement up to 8 kbar, the charge ordering insulator might spread over high pressure region at least 8 kbar. These results suggested that the charge fluctuation might be crucial to the superconductivity in this material and the present material will seive as a simple tool for the investigation of the universality of the interplay between superconductivity and charge fluctuation.With studying the molecular conductors, development of multifunctional supuramolecular materials and their application to the organic devices have been carried out. For such materials, donor-acceptor linked molecules, such as C_<60>-TTF dyads, were newly prepared and an obvious intramolecular charge transfer interaction was observed unlike the previously reported C_<60>-TTF systems. The life time of the photo-induced charge separated state of the C_<60>-TTF dyad was revealed to be extremely short by the photo-physical study of the excited states, which is disadvantageous for the organic devices such as an organic solar cell. In order to overcome this situation, C_<60>-TTF dendrimers were prepared and the solar cell property was observed in spite of the low efficiency. Less
在这个研究项目中,基于新的分子设计开发了新型有机导体和超导体,这种新的分子设计是稳定分子金属的不稳定,如TTP(四硫富瓦伦)和TTP(四硫五烯)导体中所见。为此,设计并合成了新的π电子供体,其π电子系统与之前的TTF和TTP供体相比有所减少。研究人员对由此类π还原电子供体制备的导电自由基盐的结构和物理性质进行了研究,并发现了一种新的超导体,(DODHT)_2BF_4·H_2O。通过X射线衍射和磁化率测量研究了压力诱导超导体(DODHT)_2PF_6在环境压力下的绝缘相,绝缘体相是具有条带型电荷图案的电荷有序状态。此外,更精确地测量这种材料在压力下的输运特性,特别是在超导相和绝缘体相之间的边界周围,可以得到压力-温度相图;在相图中,超导状态和常阻状态在13 kbar压力以上共存,并且绝缘体相存在于13.2至15.1 kbar之间的超导相的正上方。由于在高达 8 kbar 的输运测量中观察到清晰的绝缘体转变,因此电荷排序绝缘体可能会分布在至少 8 kbar 的高压区域。这些结果表明,电荷波动可能对该材料的超导性至关重要,并且本材料将作为研究超导性和电荷波动之间相互作用的普遍性的简单工具。通过研究分子导体,开发了多功能超分子材料及其在有机器件中的应用。对于此类材料,新制备了供体-受体连接分子,例如C_ 60 -TTF二联体,并且观察到与先前报道的C_ 60 -TTF系统不同的明显的分子内电荷转移相互作用。通过激发态的光物理研究发现C_ 60 -TTF二元组的光致电荷分离态的寿命极短,这对于诸如有机太阳能电池的有机器件是不利的。为了克服这种情况,制备了C_ 60 -TTF树枝状聚合物,尽管效率较低,但仍观察到了太阳能电池的性能。较少的

项目成果

期刊论文数量(64)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
A new organic superconductor, β(BDA-TTP)_2GaCl_4 [BDA-TTP=2,5-(1,3-dithian-2-ylidene)-1,3,4,6-tetrathiapentalene]
一种新型有机超导体β(BDA-TTP)_2GaCl_4 [BDA-TTP=2,5-(1,3-二硫基-2-亚基)-1,3,4,6-四硫五环烯]
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    J.Yamada;T.Toita;H.Akutsu;S.Nakatsuji;H.Nishikawa;I.Ikemoto;K.Kikuchi;E.S.Choi;D.Graf;J.S.Brooks
  • 通讯作者:
    J.S.Brooks
Crystal structure and physical properite of (DODHT)_2FeCl_4
(DODHT)_2FeCl_4的晶体结构和物理性质
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H.Yoshino;K.Murata;K.Saito;H.Nishikawa;K.Kikuchi;I.Ikemoto;K.Masunaga et al.;H.Nishikawa et al.
  • 通讯作者:
    H.Nishikawa et al.
Photophysical Study of New Methanofullerene-TTF Dyads : An Obvious Intramolecular Charge Transfer in the Ground States.
新型亚甲基富勒烯-TTF 二元组的光物理研究:基态下明显的分子内电荷转移。
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H.Nishikawa;Y.Sato;K.Kikuchi;T.Kodama;I.Ikemoto;J.Yamada;H.Oshio;R.Kondo;S.Kagoshima;J.Yamada;J.Yamada;T.Mori;J.Yamada;J.Yamada;E.S.Choi;H.Imai;Y.Oshima;H.Nishikawa
  • 通讯作者:
    H.Nishikawa
Structure and properties of radical salts of DODHT derivatives
DODHT衍生物自由基盐的结构和性质
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    J.Yamada;H.Akutsu;H.Nishikawa;K.Kikuchi;H.Nishikawa et al.;M.Umemiya et al.;J.Yamada et al.;T.Kodama et al.;H.Nishikawa et al.;H.Nishikawa et al.;H.Nishikawa et al.
  • 通讯作者:
    H.Nishikawa et al.
Crystal structures and physical properties of new Ni complexes with dihydro-TTF dithiolate
新型镍与二氢-TTF二硫醇配合物的晶体结构和物理性质
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    K.Yokoyama;H.Nishikawa;K.Kikuchi;T.Kodama;I.Ikemoto;J.Yamada
  • 通讯作者:
    J.Yamada
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NISHIKAWA Hiroyuki其他文献

NISHIKAWA Hiroyuki的其他文献

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{{ truncateString('NISHIKAWA Hiroyuki', 18)}}的其他基金

Molecular spintronics based on hybrid compounds between organic conductors and transition metal complexes.
基于有机导体和过渡金属配合物之间的杂化化合物的分子自旋电子学。
  • 批准号:
    23655114
  • 财政年份:
    2011
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Functional analysis of BRCA1/BAP1 complex
BRCA1/BAP1 复合物的功能分析
  • 批准号:
    23791504
  • 财政年份:
    2011
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Three dimensional dielectrophoretic devices using high-aspect-ratio structures fabricated by proton beam writing
使用质子束写入制造的高纵横比结构的三维介电泳装置
  • 批准号:
    21360154
  • 财政年份:
    2009
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
A functional analysis of stabilizing factor BAP1 of cancer-restraining gene BRCA1
抑癌基因BRCA1稳定因子BAP1的功能分析
  • 批准号:
    20790939
  • 财政年份:
    2008
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Development of Molecular Conductors Linked with Magnetic Metal Ions and Their Application to Spin-electronics Materials
磁性金属离子连接分子导体的开发及其在自旋电子材料中的应用
  • 批准号:
    20550118
  • 财政年份:
    2008
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Micro and nano-machining of polymer and glass materials using proton beamwriting
使用质子束写入对聚合物和玻璃材料进行微米和纳米加工
  • 批准号:
    17310085
  • 财政年份:
    2005
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on the three-dimensional structures in silica glass induced by micro- and nano-scale irradiation effects using focused ion beam
聚焦离子束微纳尺度辐照效应诱导石英玻璃三维结构研究
  • 批准号:
    15510112
  • 财政年份:
    2003
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Control of the anisotropy in the formatin of silver precipitates in Ag-Cl containing glass
含 Ag-Cl 玻璃中银沉淀形成各向异性的控制
  • 批准号:
    07805033
  • 财政年份:
    1995
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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Megabar Neutron Diffraction for Hydrogen, Ices and Superconductor Research MENHIR
用于氢、冰和超导体研究的兆巴中子衍射 MENHIR
  • 批准号:
    EP/Y020987/1
  • 财政年份:
    2024
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    $ 2.24万
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Superconductor-(Metal)-Insulator Transitions: Understanding the Emergence of Metallic States, A Continuation Proposal
超导体-(金属)-绝缘体转变:了解金属态的出现,延续提案
  • 批准号:
    2307132
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    2023
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    $ 2.24万
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    Continuing Grant
EAGER: Exploration of Apatite Room Temperature Superconductor Phase Space
EAGER:磷灰石室温超导体相空间的探索
  • 批准号:
    2401995
  • 财政年份:
    2023
  • 资助金额:
    $ 2.24万
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    Standard Grant
Creation of layered high-temperature superconductor spin valves
层状高温超导自旋阀的创建
  • 批准号:
    23K03952
  • 财政年份:
    2023
  • 资助金额:
    $ 2.24万
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Investigation of spontaneous thermal Hall effects in a chiral superconductor
手性超导体中自发热霍尔效应的研究
  • 批准号:
    23H01116
  • 财政年份:
    2023
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Giant Inductance Device based on Ferromagnetic pi Josephson Junctions for Increasing the Integration of Superconductor Digital Circuits
基于铁磁π约瑟夫森结的巨型电感器件提高超导数字电路的集成度
  • 批准号:
    23K13376
  • 财政年份:
    2023
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    $ 2.24万
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Control of topology of superconductivity in magnetic chain on Ising superconductor
伊辛超导体磁链超导拓扑控制
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    23H01134
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高温超导参量放大器研究及其在外差接收机中的应用
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    23K03955
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CAREER: Skyrmion-Vortex Interactions in Ferromagnet-Superconductor Heterostructures
职业:铁磁体-超导异质结构中的斯格明子-涡旋相互作用
  • 批准号:
    2325089
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Quantum Simulation of an FFLO Superconductor
FFLO 超导体的量子模拟
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    2309362
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    2023
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    $ 2.24万
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