Crystalline nanoparticles

AOT, could form w/c RMs in the presence of the commercially available perfluoropentanol (F-pentanol) as a co-surfactant, and the RMs formed could provide polar micro-aqueous for highly ionic chemicals[4,5]. Herein, we present the synthesis of crystalline nanoparticles of Ag, Agl, and Ag2S (which have potential application as photoelectric and thermoelectric devices) in the polar micro-aqueous domains of the w/c RMs stabilized by the AOT/F-pentanol (AOTF) surfactant/co-solvent combination, suggesting the possibility of the commercial utilization of SCCO2 in nanomaterials synthesis. 

Lyotropic liquid crystalline nanoparticles have also been described. Concentrated solutions of gold nanorods in water in the presence of a surfactant (cetyltrimethyl-ammonium bromide) display a nematic mesophase stable up to 200 °C [74[. The N mesophase was identified by optical microscopy by their typical nematic droplets texture. 

The covalent nature of III-V materials causes problems for preparation of highly crystalline nanoparticles and thin films. A single-molecular precursor approach was employed to produce III-V nanoparticles of InP and GaP using the indium/gallium diorganophosphide compounds... 

The growth of crystalline nanoparticles was also visible with powder X-ray diffraction of dried Ti-Beta gels. XRD spectra show that after 28 hours of synthesis procedure Ti-Beta crystals grow to a sufficient size to be detected. In samples that were hydrothemally treated less than 28 hours, no peaks in XRD patterns were observed. After 48 hours of synthesis the sample was already fully crystallized and had the distinguishable Ti-Beta XRD pattern (Figure 3). 

Nanoparticles in Liquid Crystals and Liquid Crystalline Nanoparticles... 

In the second part of this chapter recent progress towards nanostructured polycrystalline assemblies from block copolymer mesophases will be described. First, developments in the approaches presented so far toward nanostructured materials with crystalline nanoparticles embedded in an amorphous silica-type material will be discussed. The second section will describe a new assembly approach for the development of nanostructured materials with highly crystalline walls. The last part highlights achievements of the self-assembly of block copolymers with... 

Klaus, T., Joerger, R., Olsson, E., and Granqvist, C.G. 1999. Silver-based crystalline nanoparticles, microbially fabricated. Proceedings of National Academy of Science, USA, 96 13611. ... 

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