Ethanol → HCID 86639774, compound

Participants

Reaction Conditions

Reaction Steps

BuNB (25.22 g, 0.168 mol), Triethoxysilyl Norbomene (TESNB, CAS 18401-43-9) (4.78 g, 0.019 mol), triethyl silane (0.11 g, 9.32E-05 mol), ethanol (0.10 g, 2.24E-03 mol) and toluene (170.0 g) were combined in a 500 mL serum bottle and heated to 80° C. in an oil bath to form a solution. To this solution were injected Pd1206 (0.018 g, 1.49E-05 mol) in the form of a concentrated solution in dichloromethane. After addition, the resulting mixture was maintained at 80° C. for 9 hours. The copolymer was precipitated by adding methanol drop wise into the vigorously stirred reaction mixture. The precipitated copolymer was collected by filtration and dried in an oven at 60° C. under vacuum After drying, 20.58 g was obtained (69%). The molecular weight of the copolymer was determined by GPC in THF solvent (polystyrene standard) to be Mw=238,000 and Mn=96,000. The composition of the copolymer was determined by 1H-NMR to be (85/15) BuNB/TESNB copolymer. The refractive indices of this polymer were measured by prism coupling method and determined to be 1.5061 in TE mode and 1.5041 in TM mode at a wavelength of 633 nm. The Tg (based on thermomechanical analysis (TMA) measurement) of this polymer was 276° C. The dried copolymer was dissolved insufficient toluene to result in a 30 wt % copolymer solution.

Provenance & Evidence