Molecularly programmed hierarchical self-assembly of bottlebrush polymers into core–shell nanospheres with intrinsic charge-trapping for high performance triboelectric nanogenerators

Molecularly programmed PNB- g -PVDF bottlebrush polymers self-assemble into β-phase-rich core–shell nanospheres, creating intrinsic charge-trapping sites that enhance charge retention and triboelectric output without external dielectric fillers.