required to determine the peak height at 988 cm u2212 1 due to twisting c u2014 h out of plane vibrations of a vinyl group bonded to a phenyl ring the scanning velocity was set to 0 158 and the aperture to 130 the 1 h nmr measurements were performed using a bruker avance 500 mhz nmr spectrometer thirty two scans of each material were collected in a 5 mm diameter probe with a delay of 10 s to a 50 ml erlenmeyer flask 0 45 g of alcl 3 was added followed by 100 ml of methyl chloride at u2212 30 u00b0 c the resulting solution was stirred for 30 min at u2212 30 u00b0 c and then cooled down to u2212 95 u00b0 c thus forming the catalyst solution to a 2000 ml glass reactor equipped with an overhead stirrer 900 ml of methyl chloride at u2212 95 u00b0 c were added followed by 100 0 ml isobutylene at u2212 95 u00b0 c 3 0 ml of isoprene at room temperature 0 5 ml dvb at room temperature and 1 0 ml of 2 4 4 trimethyl 1 pentene the latter chemical served as a chain transfer agent during polymerizations in order that the formed polymer was soluble in an organic solvent the reaction mixture was cooled down to u2212 95 u00b0 c and 10 0 ml of the catalyst solution was added to start the reaction the reaction was carried out in mbraun u00ae drybox under the atmosphere of dry nitrogen the reaction was terminated after 5 minutes by adding into the reaction.