Near-IR absorbing tetraene-linked π-conjugated porous polymers for energy storage and electrical conductivity

Abstract

Tetraene-linked diketopyrrolopyrrole (DPP)-based CMPs were developed via Knoevenagel condensation of ditopic active hydrogen containing DPP with tritopic aryl aldehydes. The “tetra-ene” π-arrangement in the molecular framework promotes uninterrupted π-delocalization, resulting in near-infrared (NIR) absorption (∼red edge of 1200 nm), high electrical conductivity in the pristine (10⁻³ S m⁻¹) and doped states (0.2 S m⁻¹), and moderate energy storage (70 F g⁻¹).