Abstract
Using a combination of x-ray diffraction, volumetric adsorption and inelastic neutron scattering (INS) the adsorption properties of methane within the channels of L-Isoleucyl-L-Valine (IV) and L-Valyl-L-Alanine (VA) dipeptides have been investigated. These biomaterials have quasi one-dimensional channels of tunable diameters in the range of 3-6 Å and offer possibilities for selective adsorption, as well as, water and gas transport properties. High-resolution volumetric methane adsorption measurements performed near 100K for IV find that this biomaterial exhibits an adsorption capacity of ∼100 m2/g. High-resolution Inelastic Neutron Scattering (INS) measurements were performed at the Spallation Neutron Source using the BASIS spectrometer with ∼ 3.5 μeV resolution. The data clearly indicate that at least two spectral features at energy transfers near 100 and 200 μeV are present, which suggests a lowering of the hindering potential for methane reorientation primarily about the three-fold axis within the IV channels. Such features play a key role in understanding details concerning the potential energy surface. These thermodynamic and INS studies suggest that the flexibility and dynamical motion within the dipeptide channels may play a significant role in the adsorption properties.
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References
R. E. Morris and P. S. Wheatley, Angew. Chem. Int. Ed. 47, 4966 (2008).
M. W. Anderson et al., Nature 367, 3. 347 (1994).
B. Panella, M. Hirscher, Carbon 43, 2209 (2005).
S. Kitagawa et al., Angew. Chem. Int. Ed. 43, 2344 (2004).
J. L. C. Rowsell, O. M. Yaghi, Angew. Chem. Int. Ed. 44, 4670 (2005).
P. Sozzani et al., Chem. Commun., 1921 (2006)
P. Valsesia et al., J. Am. Chem. Soc. 129, 8566 (2007)
P. Sozzani et al., Angew. Chem. Int. Ed 44, 1826 (2005).
R. V. Ulijn, A. M. Smith, Chem. Soc. Rev. 37, 664 (2008)
K. Rajangam et al., Stupp. Nano Lett. 6, 2086 (2006).
C. H. Gorbitz, Chem. Eur. J. 13, 1022 (2007)
D. V. Soldatov et al., J. Am. Chem. Soc. 128, 1304 (2006).
A. Comotti et al., Chem. Comm., 284 (2009).
A. Hicks and J. Z. Larese, Chemical Physics 427, 71 (2013) and refs. therein.
A. Inaba et al., J. Chem. Phys. 103, 1627 (1995) and refs. therein.
M. L. Drummond et al., J. Phys. Chem. C 111, 966 (2007) and refs. therein.
Z. Mursic et al., Rev. Sci. Inst. 67, 1886 (1996).
E. Mamontov and K. W. Herwig, Rev. Sci. Instrum. 82, 85109 (2011).
C. F. Koehler and J. Z. Larese, Rev. Sci. Instrum. 71, 324 (2000).
H. K. Kim, Q. M. Zhang and M. H. W. Chan, Phys. Rev. B 34, 4699 (1986).
W. Press, “Single-particle Rotations in Molecular Crystals”, Springer Tracts in Mod. Phys. 92, Springer-Verlag, Berlin, 1981.
W. Press, J. Chem Phys. 56, 2597 (1972).
M. Newbery et al., Chem. Phys. Lett. 59, 461 (1978).
M. Prager and A. Heidemann, Chem. Rev. 97, 2933 (1997) and refs therein.
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Paradiso, D., Perelli Cippo, E., Gorini, G. et al. Characterization of Dipeptide-based Sorbent Materials using Combined Thermodynamic and Inelastic Neutron Scattering Techniques. MRS Online Proceedings Library 1793, 47–52 (2015). https://doi.org/10.1557/opl.2015.664
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DOI: https://doi.org/10.1557/opl.2015.664