Simple synthetic procedures have been developed to prepare suitably substituted stable carbazoles B1− B3, G1− G3, and R1− R3. These compounds emit blue, green, and orange- red light, respectively, and show a red-shifted emission in the solid state relative to that in solution. The extent of the shift is highly dependent on the nature and the positions of the substituents. A red-shift as high as 120 nm can be achieved by a suitable substitution, ...
