Alternating Conjugated and Transannular Chromophores: Tunable Property of Fluorene-Paracyclophane Copolymers via Transannular π−π Interaction
摘要:
GraphicsA series of fluorene-dithia[3.3]paracyclophane copolymers was synthesized by Suzuki coupling reactions of suitable precursors. Transannular pi-pi interactions altered the electronic and optical properties of the polymer backbone significantly. A large red shift in the emission spectrum of the unsubstituted polymer was accompanied by enhanced photoluminescence (PL) efficiency. Substitution in the cyclophane unit resulted in PL quenching.
Alternating Conjugated and Transannular Chromophores: Tunable Property of Fluorene-Paracyclophane Copolymers via Transannular π−π Interaction
摘要:
GraphicsA series of fluorene-dithia[3.3]paracyclophane copolymers was synthesized by Suzuki coupling reactions of suitable precursors. Transannular pi-pi interactions altered the electronic and optical properties of the polymer backbone significantly. A large red shift in the emission spectrum of the unsubstituted polymer was accompanied by enhanced photoluminescence (PL) efficiency. Substitution in the cyclophane unit resulted in PL quenching.