A crystalline bisindolylmaleimide with strong solid-state fluorescence of red color and its analogous cross-linked polymer without fluorescence

A crystalline bisindolylmaleimide (BIM) 3 with strong fluorescence in the solid state was prepared and studied. Its analogous cross-linked polymer 4 with the same BIMs fluorophore was designed and characterized. The investigation of the covalent bonding networking effect on the solid-state fluorescence was carried out by the comparison between 3 and 4.制备并研究了固态下具有强荧光的结晶态双吲哚马来酰亚胺（bisindolylmaleimide，BIM）3。设计并表征了带有相同BIM荧光团的同类交联聚合物4。通过对比化合物3与4，研究了共价键网络效应对固态荧光的影响。