Electronic Dynamics Study by NMR using isotope substitution

为了研究电荷动力学，我们计划对TTF-TCNQ盐进行2D-核磁共振。TTF-TCNQ是一种最著名的电荷转移盐，它在低温下发生CDW转变。然而，关于CDW动力学的光谱研究很少。核磁共振是磁性研究中最有力的工具之一。核磁共振还可以通过核四极相互作用来探测电荷动力学。因此，二维核磁共振是研究电荷动力学的好方法。2D-核磁共振探测了磁性和电荷两个方面。另一方面，^1H-核磁共振只探测磁性。比较同一部位的~1H和~2D核磁共振结果，可以提取出只含电荷的信息。首先，我们合成了二维取代的TTF分子，制备了TTF-TCNQ络合物的单晶。我们还尝试合成了2D取代的TTF。我们为TCNQ-d找到了更简单的合成路线。对该复合体的^2D核磁共振正在进行中。

In order to investigate the charge dynamics, we planned to ^2D-NMR on TTF-TCNQ salts. TTF-TCNQ is a most famous charge transfer salt, which shows CDW transition at low temperature. However there are few spectroscopic studies on the dynamics o CDW. NMR is one of the most powerful tools for magnetism. NMR also can probe the charge dynamics via nuclear quadrupole interaction. Therefore ^2D-NMR is good idea for the charge dynamics. ^2D-NMR probes the both of the magnetism and the charge. On the other hands, ^1H-NMR probes only the magnetism. Comparing the results ^2D and ^1H NMR on same sites, we can extract the information of only charge. First we synthesized the ^2D substituted TTF molecule and prepared the single crystal of TTF-TCNQ complex. We also tried to synthesize the 2D substituted TTF. We found more easy synthetic route for TCNQ-d. ^2D NMR on the complex is now in progress.