Porous capsules allow pore opening and closing that results in cation uptake

Angewandte Chemie - International Edition

Volumn 44, Issue 47, 2005, Pages 7757-7761

  Müller, Achim ^a   Toma, Liviu ^a   Bögge, Hartmut ^a   Schäffer, Christian ^a   Stammler, Anja ^a  

^a BIELEFELD UNIVERSITY   (Germany)

Author keywords

Calcium; Ion transport; Molybdenum; Polyoxometalates; Porous capsules

Indexed keywords

CALCIUM; CELL MEMBRANES; CHARGE TRANSFER; MOLYBDENUM; POROUS MATERIALS;

CALCIUM CHANNELS; ION TRANSPORT; POLYOXOMETALATES; POROUS CAPSULES;

POSITIVE IONS;

CALCIUM; CATION; MOLYBDENUM; NANOMATERIAL;

ARTICLE; BIOLOGICAL MODEL; CHEMICAL STRUCTURE; CHEMISTRY; KINETICS; POROSITY; X RAY CRYSTALLOGRAPHY;

CALCIUM; CATIONS; CRYSTALLOGRAPHY, X-RAY; KINETICS; MODELS, BIOLOGICAL; MODELS, MOLECULAR; MOLYBDENUM; NANOSTRUCTURES; POROSITY;

EID: 28744440079     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200502202     Document Type: Article

References (54)

1. L. Cronin in Comprehensive Coordination Chemistry II, Vol. 7 (Eds.: J. A. McCleverty, T. J. Meyer), Elsevier, Amsterdam, 2004, pp. 1-56.
2. a) A. Müller, P. Kögerler, C. Kuhlmann, Chem. Commun. 1999, 1347-1358;
3. b) A. Müller, S. Roy, Coord. Chem. Rev. 2003, 245, 153-166;
4. c) L. Cronin, E. Diemann, A. Müller in Inorganic Experiments, 2nd ed. (Ed.: J. D. Woollins), Wiley-VCH, Weinheim, 2003, pp. 340-346;
5. d) A. Müller, S. K. Das, E. Krickemeyer, C. Kuhlmann, Inorg. Synth. (Ed.: J. R. Shapley) 2004, 34, pp. 191-200;
6. e) A. Müller, S. Roy in The Chemistry of Nanomaterials: Synthesis, Properties and Applications (Eds.: C. N. R. Rao, A. Müller, A. K. Cheetham), Wiley-VCH, Weinheim, 2004, pp. 452-475;
7. f) N. Hall, Chem. Commun. 2003, 803-806.
8. 7Li NMR solution studies: a) A. Müller, D. Rehder, E. T. K. Haupt, A. Merca, H. Bögge, M. Schmidtmann, G. Heinze-Brückner, Angew. Chem. 2004, 116, 4566-4570;
9. Angew. Chem. Int. Ed. 2004, 43, 4466-4470;
10. corrigendum: A. Müller, D. Rehder, E. T. K. Haupt, A. Merca, H. Bögge, M. Schmidtmann, G. Heinze-Brückner, Angew. Chem. 2004, 116, 5225;
11. Angew. Chem. Int. Ed. 2004, 43, 43, 5115
12. (see also: M. Gross, Chem. World 2004, 1, 18) and;
13. b) E. T. K. Haupt, C. Wontorra, D. Rehder, A. Müller, Chem. Commun. 2005, 3912-3914;
14. c) A. Müller, E. Krickemeyer, H. Bögge, M. Schmidtmann, S. Roy, A. Berkle, Angew. Chem. 2002, 114, 3756-3761;
15. Angew. Chem. Int. Ed. 2002, 41, 3604-3609.
16. a) A. Müller, E. Krickemeyer, H. Bögge, M. Schmidtmann, B. Botar, M. O. Talismanova, Angew. Chem. 2003, 115, 2131-2136;
17. Angew. Chem. Int. Ed. 2003, 42, 2085-2090;
18. b) A. Müller, H. Bögge, M. Henry, C. R. Chim. 2005, 8, 47-56;
19. c) M. Henry, H. Bögge, E. Diemann, A. Müller, J. Mol. Liq. 2005, 118, 155-162;
20. d) A. Müller, S. K. Das, S. Talismanov, S. Roy, E. Beckmann, H. Bögge, M. Schmidtmann, A. Merca, A. Berkle, L. Allouche, Y. Zhou, L. Zhang, Angew. Chem. 2003, 115, 5139-5198;
21. Angew. Chem. Int. Ed. 2003, 42, 5039-5044.
22. a) B. Alberts, A. Johnson, J. Lewis, M. Raff, K. Roberts, P. Walter, Molecular Biology of the Cell, 4th ed., Garland Science, New York, 2002;
23. b) J.-M. Lehn, Proc. Natl. Acad. Sci. USA 2002, 99, 4763-4768, and references therein.
24. + (unpublished results; see also comments in the text) are as expected weaker, while with the increasing basicity of the corresponding unprotonated base - which is lowest in case of urea - the stability of the protonated species increases (H. R. Christen, F. Vögtle, Organische Chemie, Vol. 1, Salle and Sauerländer, Frankfurt am Main, 1992, p. 452);
25. b) Urea is, apart from its biological (e.g., protein denaturation) and industrial importance (see, for example, J. W. Steed, J. L. Atwood, Supramolecular Chemistry, Wiley, New York, 2000, p. 273),
26. especially interesting structurally and chemically: firstly because of the abundance of the (complementary) hydrogen-bonding sites giving rise to the remarkable cage/inclusion structures (see, for example, G. A. Jeffrey, An Introduction to Hydrogen Bonding, Oxford University Press, New York, 1997, p. 175),
27. + fragment (K. P. C. Vollhardt, N. E. Schore, Organische Chemie, Wiley-VCH, 3. Aufl, Weinheim, 2000, p. 956;
28. 2- ion, it was concluded for the first time that the preferable site of protonation is the O atom
29. 17O NMR spectroscopy studies over a wide pH range, from aqueous solution to fluoro sulfonic acid, it was concluded that (the first) protonation takes place at the O atom; in a magic acid even double protonation was observed
30. (B. Valentine, T. E. St. Amour, D. Fiat, Org. Magn. Reson. 1984, 22, 697-700);
31. c) W. Kaim, B. Schwederski, Bioinorganic Chemistry: Inorganic Elements in the Chemistry of Life, Wiley, Chichester, 1994, p. 293;
32. d) Note: this type of capsules is stable in solution at pH values between 1.5 and 4 and under exclusion of oxygen.
33. I. D. Brown in Structure and Bonding in Crystals, Vol. II (Eds.: M. O'Keeffe, A. Navrotsky), Academic Press, New York, 1981, pp. 1-30.
34. -3 (SHELXS/L, SADABS from G. M. Sheldrick, University of Göttingen, 1997/2003;
35. structure graphics with DIAMOND 3.0, http://www.crystalimpact.com/
36. and with POV-Ray 3.6, http://www.povray.org/).
37. [10], for which the synthesis is also given (see Experimental Section), corresponds to that of 2.
38. a) S. Roy, Thesis, Faculty of Chemistry, University of Bielefeld, 2005;
39. b) A. Müller, A. Merca, S. Roy, H. Bögge, M. Schmidtmann, unpublished results.
40. 3 molecules out of the capsules upon heating occurs at rather high temperatures (A. Malecki, A. Bielanski, E. Diemann, A. Müller, unpublished results).
41. 15N HSQC NMR spectroscopy (E. T. K. Haupt, A. Müller, unpublished results);
42. b) A. Mix, H. Bögge, T. Mitra, D. Rehder, A. Müller, unpublished results;
43. c) In an aqueous solution of 1 the ratio of open to closed pores is unknown. The complete pore closing observed in solid 2 is to some extent influenced by the fact that it lowers the capsule charge and leads to a lower solubility of 2;
44. d) A. Mix, H. Bögge, D. Rehder, T. Mitra, M. Schmidtmann, A. Müller, unpublished results.
45. F. A. Cotton, G. Wilkinson, C. A. Murillo, M. Bochmann, Advanced Inorganic Chemistry, 6th ed., Wiley, New York, 1999, page 59.
46. a) D. T. Richens, The Chemistry of Aqua Ions: Synthesis, Structure and Reactivity: A Tour Through the Periodic Table of the Elements, Wiley, Chichester, 1997;
47. b) See also: H. Krüger, Chem. Soc. Rev. 1982, 11, 227-256;
48. III could be obtained (T. W. Swaddle, J. Rosenqvist, P. Yu, E. Bylaska, B. L. Phillips, W. H. Casey, Science 2005, 308, 1450-1453).
49. [13]
50. A. Müller, L. Toma, H. Bögge, M. Schmidtmann unpublished results; see also Ref. [4b].
51. a) B. Hille, Ion Channels of Excitable Membranes, 3rd ed., Sinauer, Massachusetts, 2001;
52. b) D. E. Clapham, Nature 2003, 426, 517-524.
53. 2+ ion pumps (T. A. Scott, E. I. Mercer, Concise Encyclopedia Biochemistry and Molecular Biology, 3rd ed., de Gruyter, New York, 1997;
54. E. Mutschler, Arzneimittelwirkungen, Wissenschaftliche Verlagsgesellschaft, Stuttgart, 1986, p. 447).