Assembled Nanocomposites

Center for Materials Research and Analysis and Department of Physics and Astronomy University of Nebraska 

In the last decade, magnetic nanoclusters with diameters of 1-10 nm and containing tens-to-thousands of atoms have been of great interest because their properties are critically dependent on size [4-10]. The total magnetic moment in free Fe, Co, and Ni clusters was determined as a function of size by measuring their Stem-Gerlach deflections [4, 5, 9], For example, at a low temperature of 120 K, for small Fe clusters (25 N 130 atoms), the moment was found to be 3 per atom, which is considerably higher than 

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Ruland, W. Smarsly, B. M. 2007. 2D SAXS of self-assembled nanocomposite films with oriented arrays of spheres Determination of lattice type, preferred orientation, deformation and imperfection. J. Appl. Cryst. 40 409 417. 

V. Blyznyuk, B. Ruhstaller, P.J. Brock, U. Scherf, and S.A. Carter, Self-assembled nanocomposite polymer light-emitting diodes with improved efficiency and luminance, Adv. Mater., 11 1257-1261, 1999. 

Zhou, X.S., et al., Self-assembled nanocomposite of silicon nanoparticles encapsulated in graphene through electrostatic attraction for lithium-ion batteries. Advanced Energy Materials, 2012. 2(9) p. 1086-1090. 

Podsiadlo P, Tang Z, Shim BS et al (2007) Counterintuitive effect of molecular strength and role of molecular rigidity on mechanical properties of layer-by-layer assembled nanocomposites. Nano Lett 7 1224-1231... 

Keywords Hydrogen-bonding Self-assembly Nanocomposites ... 

Pt(acac)2 can be used for nanoparticle synthesis. A straightforward one-step photochemical synthesis of water-soluble Pt subnanometric particles was reported by Sortino and coworkers, who exposed a solution of Pt(acac)2 and thioglycolic acid to visible light, where the latter reagent forms a carboxylate-terminated hydrophilic envelope to the Pt particles (equation 4). Such particles are candidates for biological applications and for 2- and 3-dimensional self-assembled nanocomposite devices. ... 

Most of the time, metal/dielectric nanocomposites are studied in the form of solutions or thin solid films on a substrate Colloids, doped and annealed glasses, sol-gels, surfactant-stabilized nanoparticles, micelles, two- or three-dimension self-assembled nanocomposites, self-organized mesoporous oxides filled with metals, electrochemically-loaded template membranes, metal-ion implanted crystals, nanocomposite films elaborated by laser ablation, cluster-beam deposition, radio-frequency sputtering, or nanolithography. 

Kotov, N.A. and Liz-Marzan, L.M., Organization of layer-by-layer assembled nanocomposites. in Nanoscale Materials, Marzan, L.M. and Kamat, P.V., eds.. Springer, Berlin, 2003, p. 272. 

In a series of papers, Jeschke and coworkers [87-90] as well as Schlick and coworkers [91, 92] studied self-assembled nanocomposite materials made from polymers and natural clays or artificial silicates. These nanocomposite materials have superior mechanical and also heat resistant properties and are hence interesting for applications in the fields of defense and protection. Such polymer-inorganic hybrid materials form complex stmctures and EPR spectroscopy has to be combined with other physical techniques such as NMR spectroscopy, small and... 

Huang CH, Zhang Q, Jakli A (2003) Nematic anisotropic liquid-crystal gels-self-assembled nanocomposites with high electromechanical reponse. Adv Funct Mater 13 525... 

Arshady R, Pouliquen D, Halbreich A, Roger J, Pons J-N, Bacri J-C, Da Silva MdF, HafeU U (2002) In Arshady R, Guyot A (eds) Dendrimers, assemblies, nanocomposites, MML series 5. Citus Books, London, p 283... 

Sukhorukov, G.B., Multilayer Hollow Microspheres, in Dendrimers, Assemblies. Nanocomposites, MML Series, Arshady, R. and Guyot, A., Eds., Citus Books, London, 2002, pp. 111-147. 

U. Hafeli, Magnetic nanospheres and nanocomposites, in Dmdrimers, Assemblies, Nanocomposites, Chap. 6, pp. 283-329, R. Arshady, A. Guyot (Eds.), MML Series 5, Citus Book, London,... 

Spfrkovd, M., Brus, J., Brozovd, L., Strachota, A., Baldrian, J., Urbanova, M., Kotek, J., Strachotovd, B., and Slouf, M. (2008) A view from inside onto the surface of self-assembled nanocomposite coatings. Prog. Org. Coat, 61 (2—4), 145-155. 

Usually, the thicknesses of the lamellar polymer crystals and intercrystalline amorphous zones do not exceed a few tens of nanometers. Semicrystalline polymers are in fact Nature s nanocomposites self-assembled nanocomposite materials in which a combination of crystals and rubbery amorphous phase may coexist, resulting in the remarkable ductility and toughness of these materials. Another consequence of the relatively small thickness of polymer crystals and the high surface energy of their basal surfaces is a strong dependence of melting temperature on the crystal thickness. 

Bae, TH, Kim, IC and Tak, TM (2006), Preparation and characterization of fouUng-resistant TlOj self-assembled nanocomposite membranes , J Membr Sci,n5,l-5. 

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