The author of 《Nanoparticle-based hollow microstructures formed by two-stage nematic nucleation and phase separation》 were Riahinasab, Sheida T.; Keshavarz, Amir; Melton, Charles N.; Elbaradei, Ahmed; Warren, Gabrielle I.; Selinger, Robin L. B.; Stokes, Benjamin J.; Hirst, Linda S.. And the article was published in Nature Communications in 2019. Recommanded Product: 4048-33-3 The author mentioned the following in the article:
Rapid bulk assembly of nanoparticles into microstructures is challenging, but highly desirable for applications in controlled release, catalysis, and sensing. We report a method to form hollow microstructures via a two-stage nematic nucleation process, generating size-tunable closed-cell foams, spherical shells, and tubular networks composed of closely packed nanoparticles. Mesogen-modified nanoparticles are dispersed in liquid crystal above the nematic-isotropic transition temperature (TNI). On cooling through TNI, nanoparticles first segregate into shrinking isotropic domains where they locally depress the transition temperature On further cooling, nematic domains nucleate inside the nanoparticle-rich isotropic domains, driving formation of hollow nanoparticle assemblies. Structural differentiation is controlled by nanoparticle d. and cooling rate. Cahn-Hilliard simulations of phase separation in liquid crystal demonstrate qual. that partitioning of nanoparticles into isolated domains is strongly affected by cooling rate, supporting exptl. observations that cooling rate controls aggregate size. Microscopy suggests the number and size of internal voids is controlled by second-stage nucleation. The experimental part of the paper was very detailed, including the reaction process of 6-Aminohexan-1-ol(cas: 4048-33-3Recommanded Product: 4048-33-3)
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