Novel methods of inorganic compound discovery and synthesis

• US 20050136439A1
• Filed: 09/09/2004
• Published: 06/23/2005
• Est. Priority Date: 09/12/2003
• Status: Abandoned Application

• Current Assignee: North Carolina State University (University of North Carolina System)
• Original Assignee: North Carolina State University (University of North Carolina System)
• Inventors: Dolska, Magda, Eaton, Bruce E., Gugliotti, Lina A., Feldheim, Daniel L.
• Application Number:
  US10/937,524
• Publication Number:
  US 20050136439A1
• Time in Patent Office: Days
• US Class Current: 435/6
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C12N 15/1048 SELEX

Abstract

The present invention provides methods for the synthesis and/or discovery of inorganic compounds, including organometallic compounds. Also provided are functional nucleic acids for synthesis of inorganic compounds and methods of identifying the same. As another aspect, the invention provides compounds made according to the inventive methods, including palladium plates and cobalt-iron oxides spheres, cubes, fibers and nanotubes.

Claims

1. A method of producing an inorganic compound product comprising contacting a single-stranded nucleic acid with a metal donor for a time and under conditions sufficient for the production of an inorganic compound product comprising the metal.

2. The method of claim 1, wherein the inorganic compound product has a size of from about 1 nm to about 20 μ

m.

3. The method of claim 1, wherein the single-stranded nucleic acid comprises RNA.

4. The method of claim 1, wherein the single-stranded nucleic acid comprises DNA.

5. The method of claim 1, wherein the single-stranded nucleic acid comprises a modified base.

6. The method of claim 5, wherein the single-stranded nucleic acid comprises a 2′

-modified purine or pyrimidine base, a 5-position modified purine base, a 7-position modified pyrimidine base, or a combination thereof.

7. The method of claim 5, wherein the single-stranded nucleic acid comprises a thiol-modified uracil, a fluoro-modified uracil, a methoxy-modified uracil, an azido-modified uracil, an imidazole-modified uracil, a pyridyl-modified uracil, pyridylmethyl-modified uracil, an oxime-modified uracil, a carboxylate-modified uracil, an amine-modified uracil, a phosphine-modified uracil and/or a phosphite-modified uracil, or a combination thereof.

8. The method of claim 1, wherein the metal comprises at least one element selected from the group consisting of palladium, cobalt, platinum, silicon, aluminum, iron, rughenium, rhodium, osmium, iridium, copper and nickel.

9. The method of claim 1, wherein the inorganic compound product comprises an alloy.

10. The method of claim 1, wherein the inorganic compound product comprises an intermetallic compound.

11. The method of claim 1, wherein the inorganic compound product is a solid-state particle.

12. The method of claim 1, wherein the inorganic compound product is a soluble complex or colloid.

13. The method of claim 1, wherein the single-stranded nucleic acid is identified by a process comprising:

(a) contacting a pool of single-stranded nucleic acids with a metal donor so that an inorganic compound product comprising the metal is assembled;

(b) partitioning nucleic acids that assemble inorganic compounds having a selected property;

(c) generating an enriched pool of single-stranded nucleic acids from the partitioned single-stranded nucleic acids of (b); and

(d) repeating (a) to (c) at least one additional time to produce an inorganic compound product.

14. An inorganic compound product produced by the method of claim 1.

15. The inorganic compound product of claim 14, wherein the inorganic compound product has a size of from about 1 nm to about 20 μ

m.

16. The inorganic compound product of claim 14, wherein the inorganic compound product comprises at least one element selected from the group consisting of palladium, cobalt, platinum, silicon, aluminum, iron, rughenium, rhodium, osmium, iridium, copper and nickel.

17. The inorganic compound product of claim 14, wherein the inorganic compound product comprises an alloy.

18. The inorganic compound product of claim 14, wherein the inorganic compound product comprises an intermetallic compound.

19. The inorganic compound product of claim 14, wherein the inorganic compound product is a solid-state particle.

20. The inorganic compound product of claim 14, wherein the inorganic compound product is in the form of a plate.

21. The inorganic compound product of claim 20, wherein the plate comprises palladium or platinum.

22. The inorganic compound product of claim 14, wherein the inorganic compound product comprises cobalt-iron oxides.

23. The inorganic compound product of claim 14, wherein the inorganic compound product is in the form of a fiber.

24. The inorganic compound product of claim 23, wherein the fiber comprises cobalt-iron oxides.

25. The inorganic compound product of claim 14, wherein the inorganic compound product is in the form of a nanotube.

26. The inorganic compound product of claim 25, wherein the nanotube comprises cobalt-iron oxides.

27. The inorganic compound product of claim 14, wherein the inorganic compound product is a soluble complex or colloid.

28. A method of producing an inorganic compound product comprising:

(a) contacting a pool of single-stranded nucleic acids with a metal donor so that an inorganic compound product comprising the metal is assembled;

(b) partitioning nucleic acids that assemble inorganic compound products having a selected property;

(c) generating an enriched pool of single-stranded nucleic acids from the partitioned single-stranded nucleic acids of (b); and

(d) repeating (a) to (c) at least one additional time to produce an inorganic compound product.

29. The method of claim 28, wherein the inorganic compound product has a size of from about 1 nm to about 20 μ

m.

30. The method of claim 28, wherein the initial pool comprises from about 10⁸ to about 10¹⁷ independent single-stranded nucleic acid sequences.

31. The method of claim 28, wherein the single-stranded nucleic acids are RNA molecules.

32. The method of claim 28, wherein the single-stranded nucleic acids are DNA molecules.

33. The method of claim 28, wherein the single-stranded nucleic acids comprise a modified base.

34. The method of claim 33, wherein the single-stranded nucleic acid comprises a 2′

-position modified purine or pyrimidine base, a 5-position modified purine base, a 7-position modified pyrimidine base, or a combination thereof.

35. The method of claim 33, wherein the single-stranded nucleic acid comprises a thiol-modified uracil, a fluoro-modified uracil, a methoxy-modified uracil, an azido-modified uracil, an imidazole-modified uracil, a pyridyl-modified uracil, pyridylmethyl-modified uracil, an oxime-modified uracil, a carboxylate-modified uracil, an amine-modified uracil, a phosphine-modified uracil and/or a phosphite-modified uracil, or a combination thereof.

36. The method of claim 28, wherein the metal comprises at least one element selected from the group consisting of palladium, cobalt, platinum, silicon, aluminum, iron, rughenium, rhodium, osmium, iridium, copper and nickel.

37. The method of claim 28, wherein the inorganic compound product comprises an alloy.

38. The method of claim 28, wherein the inorganic compound product comprises an intermetallic compound.

39. The method of claim 28, wherein the selected property is selected from the group consisting of size, a magnetic property, shape, an optical property, luminescence, fluorescence, an electronic property, photophysical property, crystal structure and a catalytic property.

40. The method of claim 39, wherein the selected property is size and the partitioning is carried out electrophoretically or magnetically.

41. The method of claim 39, wherein the selected property is a magnetic property and the partitioning is carried out magnetically.

42. The method of claim 28, wherein (a) to (c) are repeated at least five times.

43. The method of claim 42, wherein increasing selection pressure is applied over the course of successive iterations of (a) to (c).

44. The method of claim 42, wherein two or more selection criteria are applied in partitioning the nucleic acids.

45. The method of claim 28, wherein generating an enriched pool comprises a nucleic acid amplification.

46. A method of isolating a single-stranded nucleic acid which is able to assemble an inorganic compound product, comprising:

(a) contacting a pool of single-stranded nucleic acids with a metal donor so that an inorganic compound product comprising the metal is assembled;

(b) partitioning nucleic acids that assemble inorganic compounds having a selected property;

(c) generating an enriched pool of single-stranded nucleic acids; and

(d) repeating (a) to (c) at least one additional time to produce an inorganic compound product, thereby isolating a single-stranded nucleic acid which is able to assemble an inorganic compound product.

47. The method of claim 46, wherein the inorganic compound product has a size of from about 1 nm to about 20 μ

m.

48. The method of claim 46, further comprising determining the sequence of the single-stranded nucleic acid(s) in the enriched library.

49. The method of claim 46, wherein the initial pool comprises from about 10⁸ to about 10¹⁷ independent single-stranded nucleic acid sequences.

50. The method of claim 46, wherein the single-stranded nucleic acids are RNA molecules.

51. The method of claim 46, wherein the single-stranded nucleic acids are DNA molecules.

52. The method of claim 46, wherein the single-stranded nucleic acids comprise a modified base.

53. The method of claim 52, wherein the single-stranded nucleic acid comprises a 2′

-position modified purine or pyrimidine base, a 5-position modified purine base, a 7-position modified pyrimidine base, or a combination thereof.

54. The method of claim 52, wherein the single-stranded nucleic acid comprises a thiol-modified uracil, a fluoro-modified uracil, a methoxy-modified uracil, an azido-modified uracil, an imidazole-modified uracil, a pyridyl-modified uracil, pyridylmethyl-modified uracil, an oxime-modified uracil, a carboxylate-modified uracil, an amine-modified uracil, a phosphine-modified uracil and/or a phosphite-modified uracil, or a combination thereof.

55. The method of claim 46, wherein (a) to (c) are repeated at least five times.

56. The method of claim 46, wherein generating an enriched pool comprises a nucleic acid amplification.

57. A method of producing an inorganic compound product comprising:

(a) contacting a pool of single-stranded RNAs with a metal donor so that an inorganic compound product comprising the metal and having a size of from about 1 nm to about 20 μ

m is assembled;

(b) partitioning single-stranded RNAs that assemble inorganic compound products having a selected property;

(c) amplifying the partitioned single-stranded RNAs of (b) to generate an enriched pool of single-stranded RNAs; and

(d) repeating (a) to (c) at least one additional time to produce an inorganic compound product.

58. An inorganic solid-state material consisting essentially of a palladium plate and having a size of at least about 50 nanometers.

59. The inorganic solid-state material of claim 58, wherein the palladium plate is ferromagnetic.

60. An inorganic solid-state material consisting essentially of a cobalt-iron oxide fiber.

61. An inorganic solid-state material consisting essentially of a cobalt-iron oxide nanotube.