A　zwitterionic　viologen　derivative　ligand,　1,1＇-bis(4-carboxybenzyl)　-4,4＇-bipyridinium　dichloride　(H2BpybcCl2)　as　a　multifunctional　ligand,　has　been　synthesized　incorporating　a　4,4＇-bipyridine　core　with　two　carboxylate　groups　as　a　building　block,　specifically　designed　for　the　rational　construction　of　metal-organic　frameworks.　H2BpybcCl2　ligand　is　a　multifunctional　ligand　that　contains　viologen＇s　specific　functions　and　carboxylate　coordination　groups.　The　coordination　polymers　of　viologen　carboxylate　with　copper　thiocyanate　are　not　reported　to　date.　A　novel　copper　coordination　polymer,　[Cu(SCN)2(Bpybc)]　(I)　was　by　solution　diffusion　method　and　characterized　by　single-crystal　X-ray　diffraction,　XRD,　elemental　analyses,　IR　spectroscopy,　UV-Vis　DRS,　TG　analysis　and　liquid-state　luminescent　properties.　Compound　I　crystallized　in　the　monoclinic　system　with　C2/c　space　group.　Crystal　data　for　complex　I　is　as　follow:　a=19.508(4)　Å,　b=9.474(2)　Å,　c=16.963(3)　Å,　α=90°,　β=124.92(3)°,　γ=90°.　Two　SCN-　anions　were　coordinated　to　the　Cu2+　cation　forming　a　[Cu(SCN)2]　unit.　Complex　I　was　built　up　by　[Cu(SCN)2]　units　bridged　sequentially　by　ladder-shaped　Bpybc　ligands　to　form　one-dimensional　zigzag　chains　running　along　the　[203]　direction.　The　chains　were　held　together　by　π-π　interaction　between　the　pyridine　rings　and　phenyl　rings,　thus　yielding　a　3-D　extended　supramolecular　network.　The　UV-Visible　absorption　spectra　show　the　absorption　bands　of　π-π*　transitions　of　Bpybc　ligands　and　d→d　transition　of　Cu2+.　The　liquid-state　luminescent　property　of　compound　I　was　investigated　at　room　temperature.　Attractively,　the　complex　exhibits　strong　blue　emission　peak　at　533　nm　(λEx=360　nm)　that　can　be　assigned　to　intraligand　transition　of　Bpybc　ligand　when　it　was　excited　at　360　nm.　©,　2015,　Science　Press.　All　right　reserved.