Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]

Volkmer D, Du Chesne A, Kurth DG, Schnablegger H, Lehmann P, Koop MJ, Müller A (2000)
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 122(9): 1995-1998.

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We describe the spontaneous self-assembly and the superstructure of a discrete surfactant-encapsulated cluster, (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)] (2, n approximate to 50), which consists of a hollow giant isopolyoxomolybdate core covered by a hydrophobic shell of dimethyldioctadecylammonium (DODA) cations. The structural characterization of these nanoporous core-shell particles is based on small-angle X-ray scattering (SAXS) data on solutions of the encapsulated clusters, TEM investigations, FT;LR and W-vis spectroscopy, as well as determination of the molecular area of 2 by Langmuir film investigations. Computer modeling of the solvent-accessible surface of the encapsulated cluster yields a central cavity with a volume of 1.5 nm(3) that is occupied by approximately 50 H2O molecules. The cluster bears (Mo-O) 9-ring openings with an average diameter of 0.43 nm. The covered surface area of 84 Angstrom(2)/DODA indicates a rather tight packing of the amphiphile at the cluster surface. Due to the unique supramolecular architecture of 2 as well as its high solubility in common organic solvents, this compound shows promising perspectives for future applications in host-guest chemistry and homogeneous size-selective catalysis.
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Volkmer D, Du Chesne A, Kurth DG, et al. Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. 2000;122(9):1995-1998.
Volkmer, D., Du Chesne, A., Kurth, D. G., Schnablegger, H., Lehmann, P., Koop, M. J., & Müller, A. (2000). Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 122(9), 1995-1998. doi:10.1021/ja992350v
Volkmer, D., Du Chesne, A., Kurth, D. G., Schnablegger, H., Lehmann, P., Koop, M. J., and Müller, A. (2000). Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 122, 1995-1998.
Volkmer, D., et al., 2000. Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 122(9), p 1995-1998.
D. Volkmer, et al., “Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]”, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 122, 2000, pp. 1995-1998.
Volkmer, D., Du Chesne, A., Kurth, D.G., Schnablegger, H., Lehmann, P., Koop, M.J., Müller, A.: Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. 122, 1995-1998 (2000).
Volkmer, Dirk, Du Chesne, Alexander, Kurth, Dirk G., Schnablegger, Heimo, Lehmann, Pit, Koop, Michael J., and Müller, Achim. “Toward nanodevices: Synthesis and characterization of the nanoporous surfactant-encapsulated keplerate (DODA)(40)(NH4)(2)[(H2O)(n)subset of Mo132O372(CH3COO)(30)(H2O)(72)]”. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 122.9 (2000): 1995-1998.
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