Ratinal molecular design of luminescence mechanochromic gold isocyande complexes

采用新的合成方法制备了50多个新的金异氰化物配合物，并评价了它们的机械致变色和光致发光性能。其中，我们发现有40个配合物表现出发光机械致色性。然而，金异氰化物配合物配备了氨基和硝基没有表现出发光机械变色。我们还研究了我们的金异氰化物配合物的发射波长与引入的取代基的供/吸电子能力之间的关系。但是，我们无法找到它们之间的直接相关性。相反，我们发现，结晶堆积排列对异氰化金配合物的发射波长有更显著的影响。因此，我们发现，金异氰化物配合物的晶体排列的设计可能是下一个目标，这将实现微调其发射性能。

More than 50 new gold isocyanide complexes were prepared by using newly applied synthetic methods and we evaluated their mechanochromic and photoluminescence properties. Among them, we found that 40 complexes showed luminescent mechanochromism. However, gold isocyanide complexes equipped with amino and nitro groups did not show luminescent mechanochromism. We also investigated the relationship between emission wavelength of our gold isocyanide complexes and electron donating/withdrawing abilities of introduced substituents. However, we cannot find direct correlation between them. Instead, we found that crystalline packing arrangements have more significant effect on emission wavelength of the gold isocyanide complexes. Thus, we found that design of crystalline arrangements of gold isocyanide complexes could be the next target which will achieve fine tuning of their emission properties.