Chemistry

Materials science

Optoelectronics

Photochemistry

Conjugated system

Selectivity

Physics

Staining

Irradiation

Organic chemistry

Eosin

Reagent

Catalysis

Eosin Y

Photocatalysis

Photosensitizer

Pathology

Visible spectrum

Nuclear physics

Polymer

Medicine

Angewandte Chemie International Edition

Visible-light-driven photoreduction of CO2 to energy-rich chemicals in the presence of H2 O without any sacrifice reagent is of significance, but challenging. Herein, Eosin Y-functionalized porous polymers (PEosinY-N, N=1-3), with high surface areas up to 610 m2 g-1 , are reported. They exhibit high activity for the photocatalytic reduction of CO2 to CO in the presence of gaseous H2 O, without any photosensitizer or sacrifice reagent, and under visible-light irradiation. Especially, PEosinY-1 derived from coupling of Eosin Y with 1,4-diethynylbenzene shows the best performance for the CO2 photoreduction, affording CO as the sole carbonaceous product with a production rate of 33 μmol g-1 h-1 and a selectivity of 92 %. This work provides new insight for designing and fabricating photocatalytically active polymers with high efficiency for solar-energy conversion.

Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO<sub>2</sub> Reduction with H<sub>2</sub>O to CO with High Efficiency

Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO2 Reduction with H2O to CO with High Efficiency

Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO₂ Reduction with H₂O to CO with High Efficiency