We report here the preparation of co-assembled microcrystals by employing an easy, reproducible and cost-effective technique, namely slow diffusion. 2H-Benzo[d][1,2,3]triazole and benzo[c][1,2,5]thiadiazole were chosen as host and guest skeletons, respectively. Structural similarities allowed the correct co-assembly of the two structures. The co-assemblies were studied by different techniques that included Raman spectroscopy and X-ray diffraction, amongst others. The waveguiding properties and the emission colour of the doped organic microcrystals were also investigated. It was found that changes in the molar ratio of the different doping agents could tune the light emission. Fluorescence microscopy images of the co-assembled microcrystals revealed light colour changes from green to whitish, up to CIE coordinates of (0.370, 0.385). These tunable colour-active materials could be useful in the fields of optoelectronics or lab-on-a-chip for integrated optical circuits at micro-/nanoscale.

我们在这里报告通过采用一种简单，可复制和具有成本效益的技术（即缓慢扩散）来制备共组装微晶。2 H-苯并[ d ] [1,2,3]三唑和苯并[ c分别选择] [1,2,5]噻二唑作为主体和客体骨架。结构上的相似性允许两个结构正确地共同组装。通过包括拉曼光谱和X射线衍射在内的不同技术研究了这些组件。还研究了掺杂的有机微晶的波导特性和发射色。已经发现，不同掺杂剂的摩尔比的变化可以调节发光。共组装的微晶的荧光显微镜图像显示，光的颜色从绿色变为白色，直至CIE坐标为（0.370，0.385）。这些可调谐的彩色活性材料可用于光电子学或微/纳米级集成光学电路的芯片实验室。