A slush-like polar structure with 2–4 nm multi-domains and low-angle domain walls, as the origin of the high energy storage performance in Sr _0.7 Bi _0.2 TiO ₃ thin films, is directly visualized and quantitively described.

Azo and porphyrin bifunctionalized porous polymer networks (azo-PPors) with BET surface areas up to 750 m² g⁻¹ were synthesized via a catalyst-free direct coupling of tetra(4-nitrophenyl)porphyrin and aryl amine monomers.