A novel copper(Ⅰ) coordination polymer[C30H18Cu3Cl3N4]n was solvethermally synthesized with 1-(prop-2-en-1-yl)-2-{4-[1-(prop-2-en-1-yl)-1H-1,3-benzodiazol-2-yl]phenyl}-1H-1,3-benzodiazole as the flexible ligand.It crystalizes in orthorhombic system,space group Pbcn with a =22.0890(7),b =6.3626(2),c =18.2480(6) (A),V =2564.64(14) (A)3 and Mr=365.73.The compound characterized by elemental analysis,infrared spectroscopy and powder X-ray diffraction analysis displays a 2D structure.The complex shows strong green luminescence at 506 nm and better property of electrochemical oxygen evolution.