Static structure and dynamical behavior of colloidal liquid crystals consisting of hydroxyapatite-based nanorod hybrids

Soft Matter
Taiki HoshinoTakashi Kato

Abstract

Biominerals such as bones and teeth have elaborate nanostructures composed of aligned anisotropic hydroxyapatite (HAp) nanocrystals, which results in excellent mechanical properties. Construction of such ordered structures of HAp nanocrystals in synthetic materials is challenging. Recently, we reported that HAp-nanorod-based colloidal liquid crystals could be obtained. In the present study, the static structure and dynamics of liquid-crystalline (LC) colloidal dispersions of HAp nanorods are investigated by using small-angle X-ray scattering (SAXS) and X-ray photon correlation spectroscopy (XPCS). The SAXS results reveal that the interparticle distance decreases with increasing HAp concentration, φHAp, and the decrease of the interparticle distance for the short-axis direction is significantly smaller in the LC phase than the interparticle distance in the isotropic phase. In the dynamical studies of the LC phase using XPCS, we observe the diffusive motion of the HAp colloids, with the diffusion coefficient being dependent on the wave number. The diffusive motion slows down with increasing φHAp. We observe anisotropic dynamics after long-term storage (160 days after sealing), whereas only isotropic dynamics are observed in the i...Continue Reading

References

Nov 1, 1995·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·P N SegrèP N Pusey
Jan 3, 2001·Physical Review Letters·D O RieseG Grübel
Aug 22, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S V DvinskikhA Maliniak
Nov 14, 2008·Chemical Reviews·Liam C PalmerSamuel I Stupp
Oct 12, 2011·The Journal of Physical Chemistry. B·Ilya MartchenkoPeter Schurtenberger
Dec 21, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Emilie PougetM Paul Lettinga
May 29, 2012·Angewandte Chemie·Fabio Nudelman, Nico A J M Sommerdijk
Aug 17, 2012·The Journal of Chemical Physics·Sara Jabbari-Farouji, Emmanuel Trizac
Sep 26, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Alessandro Patti, Alejandro Cuetos
Sep 7, 2013·The Journal of Chemical Physics·P HolmqvistD Kleshchanok
Oct 27, 2014·Nature Materials·Ulrike G K WegstRobert O Ritchie
Sep 19, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Alejandro Cuetos, Alessandro Patti

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Citations

Aug 30, 2020·Nanomaterials·Francesco VitaOriano Francescangeli

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Methods Mentioned

BETA
X-ray

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