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

在这一研究项目中，基于新的有机导体和超导体的新分子设计的开发，这些设计被认为是在TTP（四氟醚）和TTP（四氟醚）中看到的稳定分子金属被摧毁的。由于这一目的，新的π-电子捐助者谁的π-电子系统减少了与先前的TTF和TTP捐助者已经设计和合成的比较。从这样的π-减少的电子供体中准备了导电的基础盐的结构和物理性质，已被调查，并已发现一种新的超导体， （DODHT）_2BF_4·H_2O。通过对压力诱导型超导体的环境压力进行调查， （DODHT）_2PF_6，通过X射线分化和磁性可视性测量，绝缘剂相位是一种带条纹型电荷模式的电荷排序状态。进一步，对这种材料在压力下的运输性能的测量更精确、更具体地进行 ... More 超传导和绝缘体相位之间的边界，引导到压力-温度相位图;在相位图中，超传导和正常抗性状态的协同作用高于13千巴，而绝缘体相位存在直接高于13.2和15.1千巴的超传导相位。因为清洁绝缘器转换被观察到运输测量到8千巴，而充电排序绝缘器可能在最低8千巴的高压区蔓延开来。这些结果提出了这样一种结果，即电荷通量可能是关键性的，即这种材料和现有材料中的超导电性将是一个简单的工具，用于研究超导电性和电荷通量之间的通用性的相互作用。通过研究分子导体，开发多功能超分子材料及其对有机设备的应用已经被运送出去。对于这样的材料，捐赠接受子连接的分子，这样的C_<60>-TTF模具，最近准备了一个明显的内部分子电荷转移交互，没有看到以前报道过的C_<60>-TTF系统。C_<60>-TTF Dyad的光诱导电荷分离状态的寿命被揭示为令人兴奋的国家的光物理研究的极短，而对于有机装置来说，它被认为是一种有机太阳能细胞。如果要克服这一情况，C_<60>-TTF变性人已经准备好了，太阳能电池的财产被观察到效率低下的情况。Less（低）

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