Imprinting large molecular weight compounds in polymer composites

• US 6,582,971 B1
• Filed: 08/21/2000
• Issued: 06/24/2003
• Est. Priority Date: 08/21/2000
• Status: Expired due to Fees

• Current Assignee: Lynntech Incorporated
• Original Assignee: Lynntech Incorporated
• Inventors: Singh, Waheguru Pal, Gaskin, David, Giletto, Anthony, Fyffe, James
• Primary Examiner(s): Le, Long V.
• Assistant Examiner(s): Counts, Gary W.
• Application Number:
  US09/642,796
• Time in Patent Office: 1,037 Days
• Field of Search: 435/7.1, 436/518, 436/85, 436/528, 436/529, 436/530, 436/531, 436/829, 436/524, 436/8, 526/201, 526/911, 428/357, 501/80, 521/99, 521/100
• US Class Current: 436/518
• CPC Class Codes: C08F 20/00 Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
• CPC Class Codes: C08F 8/00 Chemical modification by after-treatment graft polymers, block polymers, crosslinking with unsaturated monomers or with polymers C08F251/00 - C08F299/00; of conjugated diene rubbers C08C
• CPC Class Codes: G01N 2600/00 Assays involving molecular imprinted polymers/polymers created around a molecular template
• CPC Class Codes: Y10T 436/10 Composition for standardization, calibration, simulation, stabilization, preparation or preservation; processes of use in preparation for chemical testing

Abstract

A method for molecular imprinting polymers with large biomolecules. The imprinted polymer composite is made by the interfacial polymerization of a monomer in the presence of the print molecule and host polymer. Since polymerization occurs at the interface between an organic solvent and an aqueous solution, the print molecule can be disposed in the phase that allows the print molecule to remain in its native configuration. The choice of the host polymer and the monomer to be polymerized can be varied to enhance the specificity of the composite toward the biomolecule that is selected to be imprinted.

Claims

1. A method of preparing a molecularly imprinted polymer, the method comprising:

(a) dissolving a print molecule and a monomer in a first phase and dissolving a host polymer in a second phase, wherein the first and second phases are different phases and selected from an aqueous phase and an organic phase;

(b) preparing an emulsion of the aqueous phase and the organic phase;

(c) polymerizing the monomer to form a polymer composite with the host polymer along an interface between the first and second phases;

(d) separating the polymer composite from the emulsion; and

removing the print molecule from the composite.

2. The method of claim 1, wherein the first phase is an aqueous phase.

3. The method of claim 2, wherein the print molecule is selected from the group consisting of proteins, enzymes, antibodies, antigens, hormones, peptides, polynucleotides, polynucleic acids, polypeptides, steroids, polyfatty acids, polyglucotides, polyglycerides, lipids, polysaccharides, whole cells, pathogens, viruses, triglycerides, nucleotides, nucleic acid bases and their conjugates, byproducts of biosynthesis of biomolecules, and combinations thereof.

4. The method of claim 2, wherein the host polymer is selected from the group polymethylmethacrylate, polyacrylic acid, polyacrylamide, polymethacrylamide, polyethacrylamide, polyalkacrylamides, polyamides, polyacrylonitrile, polybutadiene, polycaprolactone, polyethylene, polypropylene, polystyrene, polydivinylbenzene, polyethylene glycol, polypropylene glycol, polydimethylsiloxane, polylactide, polyglycolide, polyornithine, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinyl isobutyl ether, polyvinyl methyl ether, polyurethane, and polyvinylpyrrolidone.

5. The method of claim 2, wherein the host polymer is a poly amino acids selected from the group consisting of polyalanine, polyvaline, polyleucine, polyisoleucine, polyglycine, polycysteine, polymethionine, polythreonine, polyserine, polylysine, polyarginine, polyhistidine, polyaspartic acid, polyglutamic acid, polyasparagine, polyglutamine, polytyrosine, polyphenylalanine, polytryptophan, polyproline, and combinations thereof.

6. The method of claim 2, wherein the host polymer is a polysaccharide or a polycarbohydrate.

7. The method of claim 2, wherein the host polymer is selected from the group consisting of chitin, chitosan, polydextrins, starch, agarose, cellulose and combinations thereof.

8. The method of claim 2, wherein the host polymer is selected from the group consisting of a copolymer, a block copolymer, and mixtures thereof.

9. The method of claim 2, wherein the host polymer is a biocompatible polymer selected from the group consisting of polylactones, polyesters, polylactic acid, polygalactic acids, and combinations or copolymers thereof.

10. The method of claim 2, wherein the monomers produce electronically conducting polymers.

11. The method of claim 10, wherein the electronic conductivity of the imprinted polymer changes when print molecules bind to imprints in the polymer composite.

12. The method of claim 2, wherein the monomers are selected from the group consisting of pyrrole, aniline, thiophene, and combinations thereof.

13. The method of claim 2, wherein the monomers are selected from the group consisting of substituted or nonsubstituted acrylic acid, acrylonitriles, acrylamide, methacrylamide, ethacrylamide, alkacrylamides, alkyl substituted alkyl acrylates, acrylonitrile, butadiene, caprolactone, ethylene, propylene, styrene, divinylbenzene, ethylene glycol, propylene glycol, dimethylsiloxane, lactide, glycolide, ornithine, vinyl acetate, vinyl alcohol, vinyl chloride, vinyl isobutyl ether, vinyl methyl ether, urethane, isocyanates, isothiocyanates, vinylpyrrolidone, and combinations thereof.

14. The method of claim 2, wherein the monomers are amino acids selected from the group consisting of alanine, valine, leucine, isoleucine, glycine, cysteine, methionine, threonine, serine, lysine, arginine, histidine, aspartic acid, glutamic acid, asparagine, glutamine, tyrosine, phenylalanine, tryptophan, proline, and combinations thereof.

15. The method of claim 2, wherein the monomer comprises a mixture of monomers having different functional groups.

16. The method of claim 2, wherein the first and second phases further comprise one or more additives selected from the group consisting of dopants to improve the conductivity of the polymer, fluorophores, plasticisers, phase transfer catalysts, surfactants, dispersants, and combinations thereof.

17. The method of claim 2, wherein the pH is between about 6 and about 8.

18. The method of claim 2, wherein the polymerization is selected from the group consisting of photochemical, thermal, electrochemical, chemical or a combination thereof.

19. The method of claim 2, wherein the step of polymerizing the monomer comprises adding an aqueous solution of an electron acceptor into the emulsion.

20. The method of claim 19, wherein the step of initiating polymerization of the monomer comprises adding an aqueous solution of an initiator selected from the group consisting of FeCl₃, Fe(NO₃)₃, Fe(ClO₄)₃, Fe₂(SO4)₃, CuCl₂, and CuBr₂.

21. The method of claim 2, further comprising:

(f) precipitating the polymer composite out of the emulsion.

22. The method of claim 2, wherein the first phase maintains the print molecule in its native configuration.

23. The method of claim 2, further comprising:

(f) forming the polymer composite into a sensor selected from a membrane, coating, paint, beads, microspheres, or combinations thereof.

24. The method of claim 23, wherein the step of forming the polymer composite includes a process selected from the group consisting of casting a layer and compressing into a disc.

25. The molecularly imprinted polymer formed by the method of claim 2.

26. The method of claim 2, wherein the step of separating the polymer composite from the emulsion further comprises using a first solvent and wherein the step of removing the print molecule from the composite further comprises using a second solvent.

27. The method of claim 26, wherein the print molecule is selected from the group consisting of proteins, enzymes, antibodies, antigens, hormones, peptides, polynucleotides, polynucleic acids, polypeptides, steroids, polyfatty acids, polyglucotides, polyglycerides, lipids, polysaccharides, whole cells, pathogens, viruses, triglycerides, nucleotides, nucleic acid bases and their conjugates, byproducts of biosynthesis of biomolecules, and combinations thereof.

28. The method of claim 26, wherein the host polymer is selected from the group polymethylmethacrylate, polyacrylic acid, polyacrylamide, polymethacrylamide, polyethacrylamide, polyalkacrylamides, polyamides, polyacrylonitrile, polybutadiene, polycaprolactone, polyethylene, polypropylene, polystyrene, polydivinylbenzene, polyethylene glycol, polypropylene glycol, polydimethylsiloxane, polylactide, polyglycolide, polyornithine, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinyl isobutyl ether, polyvinyl methyl ether, polyurethane, and polyvinylpyrrolidone.

29. The method of claim 26, wherein the host polymer is a poly amino acids selected from the group consisting of polyalanine, polyvaline, polyleucine, polyisoleucine, polyglycine, polycysteine, polymethionine, polythreonine, polyserine, polylysine, polyarginine, polyhistidine, polyaspartic acid, polyglutamic acid, polyasparagine, polyglutamine, polytyrosine, polyphenylalanine, polytryptophan, polyproline, and combinations thereof.

30. The method of claim 26, wherein the host polymer is a polysaccharide or a polycarbohydrate.

31. The method of claim 26, wherein the host polymer is selected from the group consisting of chitin, chitosan, polydextrins, starch, agarose, cellulose and combinations thereof.

32. The method of claim 26, wherein the host polymer is selected from the group consisting of a copolymer, a block copolymer, and mixtures thereof.

33. The method of claim 26, wherein the host polymer is a biocompatible polymer selected from the group consisting of polylactones, polyesters, polylactic acid, polygalactic acids, and combinations or copolymers thereof.

34. The method of claim 26, wherein the monomers produce electronically conducting polymers.

35. The method of claim 34, wherein the electronic conductivity of the imprinted polymer changes when print molecules bind to imprints in the polymer composite.

36. The method of claim 26, wherein the monomers are selected from the group consisting of pyrrole, aniline, thiophene, and combinations thereof.

37. The method of claim 26, wherein the monomers are selected from the group consisting of substituted or nonsubstituted acrylic acid, acrylonitriles, acrylamide, methacrylamide, ethacrylamide, alkacrylamides, alkyl substituted alkyl acrylates, acrylonitrile, butadiene, caprolactone, ethylene, propylene, styrene, divinylbenzene, ethylene glycol, propylene glycol, dimethylsiloxane, lactide, glycolide, ornithine, vinyl acetate, vinyl alcohol, vinyl chloride, vinyl isobutyl ether, vinyl methyl ether, urethane, isocyanates, isothiocyanates, vinylpyrrolidone, and combinations thereof.

38. The method of claim 26, wherein the monomers are amino acids selected from the group consisting of alanine, valine, leucine, isoleucine, glycine, cysteine, methionine, threonine, serine, lysine, arginine, histidine, aspartic acid, glutamic acid, asparagine, glutamine, tyrosine, phenylalanine, tryptophan, proline, and combinations thereof.

39. The method of claim 26, wherein the monomer comprises a mixture of monomers having different functional groups.

40. The method of claim 26, wherein the first and second phases further comprise one or more additives selected from the group consisting of dopants to improve the conductivity of the polymer, fluorophores, plasticisers, phase transfer catalysts, surfactants, dispersants, and combinations thereof.

41. The method of claim 26, wherein the pH is between about 6 and about 8.

42. The method of claim 26, wherein the polymerization is selected from the group consisting of photochemical, thermal, electrochemical, chemical or a combination thereof.

43. The method of claim 26, wherein the step of polymerizing the monomer comprises adding an aqueous solution of an electron acceptor into the emulsion.

44. The method of claim 43, wherein the step of initiating polymerization of the monomer comprises adding an aqueous solution of an initiator selected from the group consisting of FeCl₃, Fe(NO₃)₃, Fe(ClO₄)₃, Fe₂(SO4)₃, CuCl₂, and CuBr₂.

45. The method of claim 26, further comprising:

(f) precipitating the polymer composite out of the emulsion.

46. The method of claim 26, wherein the first phase maintains the print molecule in its native configuration.

47. The method of claim 26, further comprising:

(f) forming the polymer composite into a sensor selected from a membrane, coating, paint, beads, microspheres, or combinations thereof.

48. The method of claim 47, wherein the step of forming the polymer composite includes a process selected from the group consisting of casting a layer and compressing into a disc.

49. The molecularly imprinted polymer formed by the method of claim 26.

50. The method of claim 1, wherein the first phase is an organic phase.

51. The method of claim 50, wherein the print molecule is selected from the group consisting of proteins, enzymes, antibodies, antigens, hormones, peptides, polynucleotides, polynucleic acids, polypeptides, steroids, polyfatty acids, polyglucotides, polyglycerides, lipids, polysaccharides, whole cells, pathogens, viruses, triglycerides, nucleotides, nucleic acid bases and their conjugates, byproducts of biosynthesis of biomolecules, and combinations thereof.

52. The method of claim 50, wherein the host polymer is selected from the group polymethylmethacrylate, polyacrylic acid, polyacrylamide, polymethacrylamide, polyethacrylamide, polyalkacrylamides, polyamides, polyacrylonitrile, polybutadiene, polycaprolactone, polyethylene, polypropylene, polystyrene, polydivinylbenzene, polyethylene glycol, polypropylene glycol, polydimethylsiloxane, polylactide, polyglycolide, polyornithine, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinyl isobutyl ether, polyvinyl methyl ether, polyurethane, and polyvinylpyrrolidone.

53. The method of claim 50, wherein the host polymer is a poly amino acids selected from the group consisting of polyalanine, polyvaline, polyleucine, polyisoleucine, polyglycine, polycysteine, polymethionine, polythreonine, polyserine, polylysine, polyarginine, polyhistidine, polyaspartic acid, polyglutamic acid, polyasparagine, polyglutamine, polytyrosine, polyphenylalanine, polytryptophan, polyproline, and combinations thereof.

54. The method of claim 50, wherein the host polymer is a polysaccharide or a polycarbohydrate.

55. The method of claim 50, wherein the host polymer is selected from the group consisting of chitin, chitosan, polydextrins, starch, agarose, cellulose and combinations thereof.

56. The method of claim 50, wherein the host polymer is selected from the group consisting of a copolymer, a block copolymer, and mixtures thereof.

57. The method of claim 50, wherein the host polymer is a biocompatible polymer selected from the group consisting of polylactones, polyesters, polylactic acid, polygalactic acids, and combinations or copolymers thereof.

58. The method of claim 50, wherein the monomers produce electronically conducting polymers.

59. The method of claim 58, wherein the electronic conductivity of the imprinted polymer changes when print molecules bind to imprints in the polymer composite.

60. The method of claim 50, wherein the monomers are selected from the group consisting of pyrrole, aniline, thiophene, and combinations thereof.

61. The method of claim 50, wherein the monomers are selected from the group consisting of substituted or nonsubstituted acrylic acid, acrylonitriles, acrylamide, methacrylamide, ethacrylamide, alkacrylamides, alkyl substituted alkyl acrylates, acrylonitrile, butadiene, caprolactone, ethylene, propylene, styrene, divinylbenzene, ethylene glycol, propylene glycol, dimethylsiloxane, lactide, glycolide, ornithine, vinyl acetate, vinyl alcohol, vinyl chloride, vinyl isobutyl ether, vinyl methyl ether, urethane, isocyanates, isothiocyanates, vinylpyrrolidone, and combinations thereof.

62. The method of claim 50, wherein the monomers are amino acids selected from the group consisting of alanine, valine, leucine, isoleucine, glycine, cysteine, methionine, threonine, serine, lysine, arginine, histidine, aspartic acid, glutamic acid, asparagine, glutamine, tyrosine, phenylalanine, tryptophan, proline, and combinations thereof.

63. The method of claim 50, wherein the monomer comprises a mixture of monomers having different functional groups.

64. The method of claim 50, wherein the first and second phases further comprise one or more additives selected from the group consisting of dopants to improve the conductivity of the polymer, fluorophores, plasticisers, phase transfer catalysts, surfactants, dispersants, and combinations thereof.

65. The method of claim 50, wherein the pH is between about 6 and about 8.

66. The method of claim 50, wherein the polymerization is selected from the group consisting of photochemical, thermal, electrochemical, chemical or a combination thereof.

67. The method of claim 50, wherein the step of polymerizing the monomer comprises adding an aqueous solution of an electron acceptor into the emulsion.

68. The method of claim 67, wherein the step of initiating polymerization of the monomer comprises adding an aqueous solution of an initiator selected from the group consisting of FeCl₃, Fe(NO₃)₃, Fe(ClO₄)₃, Fe₂(SO4)₃, CuCl₂, and CuBr₂.

69. The method of claim 50, further comprising:

(f) precipitating the polymer composite out of the emulsion.

70. The method of claim 50, wherein the first phase maintains the print molecule in its native configuration.

71. The method of claim 50, further comprising:

(f) forming the polymer composite into a sensor selected from a membrane, coating, paint, beads, microspheres, or combinations thereof.

72. The method of claim 71, wherein the step of forming the polymer composite includes a process selected from the group consisting of casting a layer and compressing into a disc.

73. The molecularly imprinted polymer formed by the method of claim 50.

74. The method of claim 50, wherein the step of separating the polymer composite from the emulsion further comprises using a first solvent and wherein the step of removing the print molecule from the composite further comprises using a second solvent.

75. The method of claim 50, wherein the print molecule is selected from the group consisting of proteins, enzymes, antibodies, antigens, hormones, peptides, polynucleotides, polynucleic acids, polypeptides, steroids, polyfatty acids, polyglucotides, polyglycerides, lipids, polysaccharides, whole cells, pathogens, viruses, triglycerides, nucleotides, nucleic acid bases and their conjugates, byproducts of biosynthesis of biomolecules, and combinations thereof.

76. The method of claim 74, wherein the host polymer is selected from the group consisting of polymethylmethacrylate, polyacrylic acid, polyacrylamide, polymethacrylamide, polyethacrylamide, polyalkacrylamides, polyamides, polyacrylonitrile, polybutadiene, polycaprolactone, polyethylene, polypropylene, polystyrene, polydivinylbenzene, polyethylene glycol, polypropylene glycol, polydimethylsiloxane, polylactide, polyglycolide, polyornithine, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinyl isobutyl ether, polyvinyl methyl ether, polyurethane, and polyvinylpyrrolidone.

77. The method of claim 74, wherein the host polymer is a poly amino acids selected from the group consisting of polyalanine, polyvaline, polyleucine, polyisoleucine, polyglycine, polycysteine, polymethionine, polythreonine, polyserine, polylysine, polyarginine, polyhistidine, polyaspartic acid, polyglutamic acid, polyasparagine, polyglutamine, polytyrosine, polyphenylalanine, polytryptophan, polyproline, and combinations thereof.

78. The method of claim 74, wherein the host polymer is a polysaccharide or a polycarbohydrate.

79. The method of claim 74, wherein the host polymer is selected from the group consisting of chitin, chitosan, polydextrins, starch, agarose, cellulose and combinations thereof.

80. The method of claim 74, wherein the host polymer is selected from the group consisting of a copolymer, a block copolymer, and mixtures thereof.

81. The method of claim 74, wherein the host polymer is a biocompatible polymer selected from the group consisting of polylactones, polyesters, polylactic acid, polygalactic acids, and combinations or copolymers thereof.

82. The method of claim 74, wherein the monomers produce electronically conducting polymers.

83. The method of claim 82, wherein the electronic conductivity of the imprinted polymer changes when print molecules bind to imprints in the polymer composite.

84. The method of claim 74, wherein the monomers are selected from the group consisting of pyrrole, aniline, thiophene, and combinations thereof.

85. The method of claim 74, wherein the monomers are selected from the group consisting of substituted or nonsubstituted acrylic acid, acrylonitriles, acrylamide, methacrylamide, ethacrylamide, alkacrylamides, alkyl substituted alkyl acrylates, acrylonitrile, butadiene, caprolactone, ethylene, propylene, styrene, divinylbenzene, ethylene glycol, propylene glycol, dimethylsiloxane, lactide, glycolide, ornithine, vinyl acetate, vinyl alcohol, vinyl chloride, vinyl isobutyl ether, vinyl methyl ether, urethane, isocyanates, isothiocyanates, vinylpyrrolidone, and combinations thereof.

86. The method of claim 74, wherein the monomers are amino acids selected from the group consisting of alanine, valine, leucine, isoleucine, glycine, cysteine, methionine, threonine, serine, lysine, arginine, histidine, aspartic acid, glutamic acid, asparagine, glutamine, tyrosine, phenylalanine, tryptophan, proline, and combinations thereof.

87. The method of claim 74, wherein the monomer comprises a mixture of monomers having different functional groups.

88. The method of claim 74, wherein the first and second phases further comprise one or more additives selected from the group consisting of dopants to improve the conductivity of the polymer, fluorophores, plasticisers, phase transfer catalysts, surfactants, dispersants, and combinations thereof.

89. The method of claim 74, wherein the pH is between about 6 and about 8.

90. The method of claim 74, wherein the polymerization is selected from the group consisting of photochemical, thermal, electrochemical, chemical or a combination thereof.

91. The method of claim 74, wherein the step of polymerizing the monomer comprises adding an aqueous solution of an electron acceptor into the emulsion.

92. The method of claim 91, wherein the step of initiating polymerization of the monomer comprises adding an aqueous solution of an initiator selected from the group consisting of FeCl₃, Fe(NO₃)₃, Fe(ClO₄)₃, Fe₂(SO4)₃, CuCl₂, and CuBr₂.

93. The method of claim 74, further comprising:

(f) precipitating the polymer composite out of the emulsion.

94. The method of claim 74, wherein the first phase maintains the print molecule in its native configuration.

95. The method of claim 74, further comprising:

(f) forming the polymer composite into a sensor selected from a membrane, coating, paint, beads, microspheres, or combinations thereof.

96. The method of claim 95, wherein the step of forming the polymer composite includes a process selected from the group consisting of casting a layer and compressing into a disc.

97. The molecularly imprinted polymer formed by the method of claim 74.