Synthesis of Electro-optic Copolymer of 3,3’, 5,5’-tetra methyl- 4,4’-dimethacryloyloxy stilbene With Methyl methacrylate.

Celite supported silver carbonate was prepared by the general procedure. 2,4,6trimethyl phenol was oxidized with silver carbonate by refluxing the mixture in benzene for 2h which ultimately formed 3,3’ 5,5’tetramethyl stilbenequinone in 93% yield. After that stilbenequinone was reduced with zinc dust and acetic acid which ultimately formed 3, 3’, 5, 5’-tetramethyl-4,4’ dihydroxystilbene as yellow crystals. 3,3’, 5,5’-tetramethyl dihydroxystilbene was then treated with methacryloyl chloride in THF solvent medium for 50h at room temperature which formed 3,3’ 5,5’-tetramethyl -4,4’-dimethacryloyl oxy stilbene. Then the monomer 3,3’ 5,5’tetramethyl-4,4’-dimethacryloyloxy stilbene was co-polymerized with methyl methacrylate in DMF solvent medium at 110 0 c for 80h by using free radical initiator benzoyl peroxide. All the monomers and co-polymer were investigated by studying UV,FT-IR, NMR spectroscopy.