“…The two dichroic dyes, Coumarin-314 (Sigma) and DC Monomer (synthesis shown in Fig. S1, ESI†) 92 were dissolved in acetonitrile (Sigma) and added to the CLC mixture, the acetonitrile was pulled off under a vacuum for 24 h in the dark. Either photoinitiator 2,2-dimethoxy-2-phenylacetophenone (I-651, iGM Resins) or 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1(I-369, iGM Resins) was added and the complete solution was melt-mixed after removal of the acetonitrile.…”