Imprinted polymer for binding of organic molecules or metal ions
The invention relates to an imprinted polymer imprinted with an organic molecule or a metal ion wherein the matrix of the polymer has been prepared from one or more monomers including bilirubin or an analogue thereof. The imprinted polymers may be prepared by polymerising one or more monomers including bilirubin or an analogue or derivative thereof in the presence of the molecule or metal ion to be imprinted or an analogue or derivative thereof, and subsequently at least partly removing the molecule or ion to be imprinted or its analogue or derivative. The polymers may be used in a method for detection and/or assay of the imprinting molecule or metal ion.
1 - 29 . (canceled)
30 . An imprinted polymer imprinted with an organic molecule or a metal ion, wherein the matrix of the polymer has been prepared from one or more monomers including bilirubin or an analogue thereof.
31 . The imprinted polymer as claimed in claim 30 wherein the imprinting is with a molecule with at least one hydrophilic group and a molecular weight below 70,000.
32 . The imprinted polymer as claimed in claim 30 wherein the polymer is imprinted with a molecule selected from the group comprising a protein, a peptide, a steroid hormone and a phenol.
33 . The imprinted polymer as claimed in claim 30 wherein the imprinting is with a metal ion.
34 . The imprinted polymer of claim 30 that is the product of an alkene polymerisation.
35 . The imprinted polymer as claimed in claim 34 wherein the polymer is the product of alkene polymerisation of a mixture comprising bilirubin and at least one further compound with more than one alkene group.
36 . The imprinted polymer as claimed in claim 35 wherein the at least one further alkene includes a monomer including at least two groups independently selected from acrylate and methacrylate.
37 . The imprinted polymer as claimed in claim 30 wherein the imprinting molecule was non-covalently bound during the formation or cross-linking of the polymer and subsequently at least partially removed by extraction with a solvent.
38 . The imprinted polymer as claimed in claim 30 wherein the polymer is cross-linked using ethylene dimethacrylate.
39 . The imprinted polymer as claimed in claim 30 wherein the mole ratio of comonomer to crosslinker is in the ratio 0:1 to 1:15.
40 . The imprinted polymer as claimed in claim 30 wherein the polymer was prepared using a crosslinker and the mole ratio of bilirubin to the crosslinker is 1:20 to 1:1.
41 . The imprinted polymer as claimed in claim 30 wherein the polymer is in form of particles, the particle size of at least 50% by weight of the polymer being in the range 38-150 microns.
42 . The method for preparing an imprinted polymer as claimed in claim 30 comprising polymerising one or more monomers including bilirubin or an analogue or derivative thereof in the presence of the molecule or metal ion to be imprinted or an analogue or derivative thereof, and subsequently at least partly removing the molecule or metal ion to be imprinted or its analogue or derivative.
43 . The method as claimed in claim 42 wherein the imprinting molecule is a molecule with at least one hydrophilic group and a molecular weight below 70,000.
44 . The method as claimed in claim 43 wherein the polymer is imprinted with a molecule selected from the group comprising a protein, a peptide, a steroid hormone and a phenol.
45 . The method as claimed in claim 42 wherein the imprinting is with an ion
46 . The method as claimed in claim 42 wherein polymerisation is alkene polymerisation.
47 . The method as claimed in claim 46 wherein a mixture comprising bilirubin and at least one further compound with more than one alkene group is polymerised.
48 . The method as claimed in claim 47 wherein said at least one further alkene includes a monomer including at least two groups independently selected from acrylate and methacrylate.
49 . The method as claimed in claim 42 wherein the imprinting molecule is non-covalently bound during the formation or cross-linking of the polymer and is subsequently at least partially removed by extraction with a solvent.
50 . The method as claimed in claim 42 wherein the polymer is cross-linked using ethylene dimethacrylate.
51 . The method as claimed in claim 42 wherein the mole ratio of comonomer to crosslinker is in the ratio 0:1 to 1:15.
52 . The method as claimed in claim 42 wherein mole ratio of bilirubin to the crosslinker is 1:20 to 1:1.
53 . The method as claimed in claim 42 wherein the imprinted polymer is ground to a particle size of at least 50% of a particle by weight of the polymer is in the range 38-150 microns.
54 . A method for the detection and/or assay of a compound or a metal ion comprising
a. contacting the sample to be tested with an imprinted polymer, imprinted with a metal ion or an organic molecule, the matrix of the polymer having been prepared from one or more monomers including bilirubin or an analogue or derivative thereof,
b. measuring binding of the molecule to the polymer.
55 . The method as claimed in claim 54 wherein the substance to be detected and/or assayed is a compound selected from the group comprising a protein, a peptide, a steroid hormone and a phenol.
56 . The method as claimed in claim 54 wherein the substance to be detected is a metal ion.
57 . The method as claimed in claim 55 wherein the compound is selected from, cortisol, propofol and chloramphenicol.
58 . The method as claimed in claim 56 wherein the ion is a cupric ion.