Ratinal molecular design of luminescence mechanochromic gold isocyande complexes

采用新合成方法制备了50多个新的异氰化金配合物，并对其机械致变色和光致发光性能进行了评价。其中，我们发现40个配合物具有发光机械致色性。而含氨基和硝基的金异氰化物配合物则不表现出机械致色性。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取代基的供/吸电子能力之间的关系。然而，我们无法找到它们之间的直接联系。相反，我们发现晶体排列对异氰化金配合物的发射波长有更显著的影响。因此，我们发现设计异氰化金配合物的晶体排列可能是下一个目标，将实现其发射特性的微调。

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.