Synthesis of New Photoresponsive Polymers Containing Trifluoromethyl-Substituted Norbornadiene Moieties
摘要:
Polymers containing trifluoromethyl. (CF3)-substituted donor-acceptor NBD moieties in the side chain or in the main chain were synthesized by substitution or addition of a CF3-NBD-carboxylic acid derivative or by polycondensation of a CF3-NBD-dicarboxylic acid derivative. The photoisomerization of the NBD moieties in these polymers proceeded very smoothly to give the corresponding QC moieties. Furthermore, the NBD moieties exhibited efficient fatigue resistance.
Polymers containing trifluoromethyl. (CF3)-substituted donor-acceptor NBD moieties in the side chain or in the main chain were synthesized by substitution or addition of a CF3-NBD-carboxylic acid derivative or by polycondensation of a CF3-NBD-dicarboxylic acid derivative. The photoisomerization of the NBD moieties in these polymers proceeded very smoothly to give the corresponding QC moieties. Furthermore, the NBD moieties exhibited efficient fatigue resistance.
Trifluoromethyl-Substituted Donor–Acceptor Norbornadiene, Useful Solar Energy Material
Trifluoromethyl (CF3)-substituted donor–acceptor norbornadiene (NBD) derivatives were synthesized. The photoisomerization of CF3-NBD derivatives proceeded smoothly. The thermal stability of quadricyclane (QC) derivatives obtained from CF3-NBD derivatives was examined, and it was found that the CF3 group increased the thermal stability of the QC derivatives. Furthermore, CF3-NBD derivatives exhibited efficient fatigue resistance.