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High Resolution Image Download MS PowerPoint Slide Z -Specific (99% cis ) and E -specific (90% trans ) syntheses of functionalized bottlebrush polymers (BBPs) by living ring opening metathesis polymerization (ROMP) of exo - N -substituted norbornene-2,3-dicarboximides (NDIs) containing terthiophene (3T) and pyrene (Pyr) moieties connected to a long methylene spacer ( n -dodecyl) have been demonstrated by the (arylimido)-vanadium(V)-alkylidene catalysts in toluene at 50 °C. Thermal properties in the resultant BBPs measured by DSC thermograms are affected by the cis / trans selectivity; the resultant cis -BBPs containing 3T possessed a melting temperature at 111.2 °C, whereas the corresponding trans -BBPs are amorphous. The differences in cis -/ trans -BBPs (containing 3T, Pyr) toward the emission properties have also been demonstrated due to a different degree in the inter/intra-polymer interaction through the functionality.
Jaiyen et al. (Wed,) studied this question.