Patent ID: 8309661

Claim:
A method of making a coordination copolymer comprising: a) adding at least one source of metal cations and at least one organic linking compound to a solvent to form a first solution or colloidal suspension; b) treating the first solution or colloidal suspension to form crystals of a first coordination polymer having a first x-ray diffraction pattern; c) adding at least one source of metal cations and at least one organic linking compound to a solvent to form a second solution or colloidal suspension wherein the second solution is not identical to the first solution or colloidal suspension; d) adding crystals of the first coordination polymer to the second solution or colloidal suspension; and e) treating the second solution or colloidal suspension to form crystals of a second coordination polymer having a second x-ray diffraction pattern as a layer over one or more crystals of the first coordination polymer forming a coordination copolymer comprising at least a first region of the first coordination polymer and at least a second region of a second coordination polymer wherein the first coordination polymer is not identical to the second coordination polymer and wherein the x-ray diffraction pattern of the coordination copolymer comprises both the first x-ray diffraction pattern and the second x-ray diffraction pattern.