By　employment　of　a　new　tripodal　phosphoryl　carboxylate　ligand,　tris(p-carboxyl-biphenyl)phosphine　oxide　(H3TBPPO),　four　novel　coordination　polymers,　namely,　Zn-3(TBPPO)(2)　(1),　Cd-3(TBPPO)(2)　(2),　Co-3(TBPPO)(2)　(3)　and　In(TBPPO)　(4),　have　been　synthesized　and　characterized.　Complexes　1,　2　and　3　are　isostructural.　Crystal　structure　analysis　reveals　that　complexes　1-3　consist　of　trinuclear　metal　building　units,　which　are　further　bridged　by　the　tripodal　phosphine　oxide　carboxylate　ligands　to　give　a　(4,8)-connected　2-fold　interpenetrating　flu　topological　net　with　a　point　symbol　of　(4(12).6(12).8(4)).4(6))(2),　while　complex　4　possesses　a　3D　4-fold　interpenetrating　dia　network　with　a　point　symbol　of　(66).　Luminescence　measurements　indicate　that　complexes　1,　2　and　4　all　show　strong　emission　bands　at　around　378　nm　in　the　solid　state　at　room　temperature.　Furthermore,　temperature-dependent　magnetic　susceptibility　study　shows　that　complex　3　exhibits　antiferromagnetism　properties.