PROPERTY DEVELOPMENT OF NOVEL ENDOHEDRAL FULLERENES THROUGH SYNTHETIC RESEARCH

通过合成研究开发新型内面富勒烯的性能

基本信息

批准号：
18550033
负责人：
KOMATSU Koichi
金额：
$ 2.63万
依托单位：
Fukui University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

We have established the molecular surgical method for the creation of endohedral fullerenes, which were obtained only in minute amounts according to the conventional physical procedures. The present research aims at the development of new properties in this kind of new endohedral fullerenes.1. Endohedral fullerenes encapsulating hydrogen and also deuterium, H2@C60 and D2@C60, were newly synthesized according to the molecular surgical method.2. An endohedral fullerene doped with potassium, K3/H2@C60, was prepared and it was shown to become an electric superconducter below the critical temperature of Tc=19.2K. This is the same temperature observed for empty C60, indicating the absence of any electronic interaction between encapsulated hydrogen and the fullerene cage under the K-doped conditions.3. The bimolecular contribution to the spin-lattice relaxation rate for the protons of H2 and H2@C60 dissolved in various organic solvents was measured in the presence of paramagnetic nitroxide ra … More dicals. It was found that the relaxation effect of the paramagnets is enhanced five-fold in H2@C60 compared to H2 under the same conditions.4. The quenching of singlet molecular oxygen ^1O2 by C60, H2@C60, and D2@C60 was examined and compared with that by free H2 and D2 in solution. The rate constants for quenching of ^1O2 by H2@C60 and D2@C60 were found to be larger than those for the quenching of ^1O2 by H2 and D2. This indicates that the presence of a pi-conjugated C60 cage plays an important role for the, ^1O2 quenching.5. Open-cage fullerenes incorporating a He atom and a H2 molecule were synthesized. The ^1H NMR chemical shift of a proton attached outside the cage is influenced by the inside guest species, thus indicating the presence of some interaction between the guest species and the open-cage fullerene cage.6. An open-cage fullerene having a selenium atom instead of sulfur at the rim of a 13-membered-ring orifice was newly synthesized. The encapsulation and release of a hydrogen molecule were examined, and it was found that activation of these processes is smaller indicating that the orifice size has been enlarged by introduction of the selenium atom. Less

我们已经建立了用于产生内嵌富勒烯的分子手术方法，该方法仅根据物理程序获得了微量。目前的常规研究旨在开发这种新型内嵌富勒烯的新性能。1．采用分子外科方法新合成了包覆氢和氘的H2@C60和D2@C60。 2．制备了钾 K3/H2@C60，并且在低于 Tc=19.2K 的临界温度下，它成为电超导体，这与空 C60 观察到的温度相同，表明封装的氢和钾之间不存在任何电子相互作用。 3．测量了溶解在各种有机溶剂中的H2和H2@C60质子对自旋晶格弛豫率的双分子贡献。在顺磁性氮氧自由基存在下，发现在相同条件下，H2@C60 中顺磁体的弛豫效果比 H2 增强了五倍。4．C60 对单线态分子氧 ^1O2 的猝灭。、H2@C60 和 D2@C60 进行了检查，并与溶液中游离 H2 和 D2 的淬灭速率常数进行了比较。发现 H2@C60 和 D2@C60 的 ^1O2 大于 H2 和 D2 的 ^1O2 猝灭，这表明 π 共轭 C60 笼的存在对于 ^1O2 猝灭起着重要作用。 .5.合成了包含He原子和H 2 分子的开笼富勒烯外部连接的质子的^ 1 H NMR化学位移。笼受内部客体物种的影响，因此表明客体物种与开笼富勒烯笼之间存在某种相互作用。6．开笼富勒烯在13元的边缘具有硒原子而不是硫原子。新合成了环孔口，对氢分子的封装和释放进行了检查，发现这些过程的活化较小，这表明孔口尺寸通过引入而扩大了。硒原子少。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

An Orifice-Size Index for Open-Cage Fullerenes

开笼式富勒烯的孔口尺寸指数

DOI：
发表时间：
2007
期刊：
影响因子：
0
作者：
S
通讯作者：
S

Nuclear Relaxation of H_2, H_2@C_ in Organic Solvents

H_2、H_2@C_<60>在有机溶剂中的核弛豫

DOI：
发表时间：
2006
期刊：
影响因子：
0
作者：
E. Sartori; M. Ruzzi; N. J. Turro; J. D. Decatur; D. C. Doetschman; R. G. Lawler; A. L. Buchachenko; Y. Murata; K. Komatsu
通讯作者：
K. Komatsu

Nuclear Relaxation of H2 and H2@C60 in Organic Solvents

H2 和 H2@C60 在有机溶剂中的核弛豫