Imine-linked　covalent　organic　frameworks　(COFs)　are　popularcandidates　for　photocatalytic　CO2reduction,　but　high　polarization　of　theimine　bond　is　less　efficient　for　pi-electron　delocalization　between　the　linkedbuilding　units,　leading　to　low　intramolecular　electron　transfer　and　poorphotocatalytic　efficiency.　Herein,　we　present　a　structural　and　electronicengineering　strategy　through　integrating　the　imine-linked　COF　consisting　ofZn-porphyrin　and　Co-bipyridyl　units　with　cadmium　sulfide　(CdS)nanowires　to　form　a　CdS@COF　core-shell　structure.　The　experimental　andtheoretical　results　have　validated　that　CdS　serves　as　the　electron　transferchannel　through　the　interfacial　electron　effects,　which　induces　photoelectrontransfer　from　Zn-porphyrin　to　CdS　and　subsequent　injection　into　Co-bipyridyl　units　for　CO2reduction.　The　as-prepared　CdS@COF　generates4057　mu　mol　g-1CO　in　8　h　under　visible-light　irradiation,　which　is　considerablyhigher　than　those　of　its　neat　CdS　and　imine-linked　COF　counterparts.　This　work　provides　protocols　to　tackle　intramolecular　chargetransfer　across　polar　linkages　between　photosensitizers　and　active　sites　for　solar-to-chemical　energy　conversion