Low band gap semiconducting covalent organic framework films with enhanced photocatalytic hydrogen evolution
Samrat Ghosh, Hüseyin Küçükkeçeci, Rajendra Prasad Paitandi, Vincent Weigelt, Veit Dippold, Shu Seki, Arne Thomas
Abstract
A contrasting photocatalytic mechanism was observed for semiconducting covalent organic frameworks (COFs). J-type aggregation favors exciton migration in the powder state, while charge transport governs the photocatalytic activity in the films.
Topics & Concepts
PhotocatalysisCovalent bondExcitonMaterials scienceCharge carrierBand gapChemical engineeringPhotochemistryOrganic semiconductorCharge (physics)Chemical physicsNanotechnologyChemistryOptoelectronicsCondensed matter physicsCatalysisOrganic chemistryPhysicsQuantum mechanicsEngineeringCovalent Organic Framework ApplicationsAdvanced Photocatalysis TechniquesMetal-Organic Frameworks: Synthesis and Applications