Creation of New Functions and Reaction Sites by Molecular Design for Various Gases-C_<60>-Alkali-Metals

在C_<60>和碳纳米管体系中，除了与氮、氢等相互作用外，还发现了与稀有气体的特征相互作用。Na-C_<60>体系不表现出超导性，而与氮或氢的三元体系则具有超导相。对Na-H-C_<60>、C_<60>和碳纳米管体系，采用质量分析热解吸、x射线光电子能谱、ESR和电子态计算等方法研究了其与He、Ne、Ar、Kr、Xe等稀有气体的相互作用。将Na-H-C_<60>, C_<60>和碳纳米管的样品原位转移到配备超高真空系统的管中，在653K或1073K下加热。然后将样品暴露在273-473K和1atm左右的气体中。当样品被加热时，解吸气体用质量分析仪进行分析。用手套袋将样品原位转移到VG ESCA LAB MkII x射线光电子能谱仪上，用MgK_α测定x射线光电子能谱。在不考虑范德华相互作用的温度区域观察到解吸峰。对于不同种类的样品和稀有气体，其解吸曲线是不同的。这些特性不依赖于疏散时间。暴露于稀有气体后，C1s和价带的XPS光谱发生了变化。在Ar的情况下，观察到一个大的化学转移到更高的结合能侧。本文首次报道了He、Ne、Ar、Kr、Xe等稀有气体的特征性相互作用。新的催化活性也发现发生在固体位点的特征文件。

In the C_<60> and carbon nanotube systems, characteristic interactions with rare gases are found in addition to the interaction with nitrogen, hydrogen and so on.Na-C_<60> system does not show the superconductivity, while ternary system with nitrogen or hydrogen becomes to have a superconductive phase. For Na-H-C_<60>, C_<60> and carbon nanotube systems, the interactions with rare gases such as He, Ne, Ar, Kr and Xe are investigated by means of mass-analyzed thermal desorption, X-ray photoelectron spectroscopy, ESR and calculations of electronic states. The samples of Na-H-C_<60>, C_<60> and carbon nanotubes are transferred in-situ to the tube equipped with the ultra-high vacuum system, and heated at 653K or 1073K.Then the samples are exposed to gases under the conditions of 273-473K and around 1 atm. When the sample is heated, the desorbed gases are analyzed by use of mass analyzers. By using the glove bag, the sample is transferred in-situ to the X-ray photoelectron spectrometer (VG ESCA LAB MkII), and X-ray photoelectron spectra are measured by using MgK_α. The desorption peaks are observed in the temperature region where the van der Waals interactions are not considered. For the sort of sample and rare gas, the desorption profiles are different from each other. These characteristics does not depend on the evacuation time. After the exposure to rare gases, the C1s and valence band XPS spectra change from the original one. In the case of Ar, a large chemical shifts to the higher binding energy side are observed. These facts on the characteristic interaction of rare gases such as He, Ne, Ar, Kr and Xe is first report. New catalytic activities are also found to occur at the characteristic files of solid sites.