A photochromic switching copolymer was synthesized by typical radical copolymerization of 2-(9H-carbazol-9-yl) ethyl methacrylate,a vinyl monomer having a s
Five new different types of 2D-π-A pyran-based dyes,(vinylcyanoacetate) pyran derivatives,having two donor (2D) and one acceptor (A) groups,were synthesize