A One-Step Strategy for End-Functionalized Donor-Acceptor Conjugated Polymers

Robb, M.J.; Montarnal, D.; Eisenmenger, N.D.; Ku, S.Y.; Chabinyc, M.L.; Hawker, C.J.
Macromolecules
2013
46, 6431-6438

A modular and robust method for preparing end-functionalized donor–acceptor (D–A) narrow bandgap conjugated polymers is reported that avoids multistep reactions and postpolymerization modification. The strategy is well-controlled and affords functional materials with predictable molecular weight and high end-group fidelity. To exemplify this synthetic strategy, narrow bandgap conjugated polymers based on PDPP2FT were prepared that contain perylene diimide (PDI) units at the chain-ends. Monte Carlo simulations confirm the high degree of chain-end functionalization while photoluminescence studies reveal the unique photophysical properties of the end-functional polymers with efficient charge transfer occurring between the main polymer chain and PDI end-groups that results exclusively from their covalent linkage.