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Section II: Chemistry Science Hall W1051 Ghislain Mandouma, Presiding.

3:15 THE MORPHOLOGY OF MOLYBDENUM TRIOXIDE NANOPAR-TICLE DEPOSITION ON CARBON NANOTUBE NETWORKS**, Liqiu Zheng1, Jerry Li2 and K.C. Chant1, 1Albany State University, Albany, GA 31705 and 2Florida State University, Tallahassee FL 32313. The morphology of molybdenum trioxide Mo03 nanoparticles attached to a network of nanotubes has been imaged using electron microscope. Purified multi-wall carbon nanotubes were suspended in sodium cholate solution (-0.1mg/m1) with assistance of bath sonication, and then filtrated and washed with plenty of water through a membrane filter to make free-standing buckypaper. The resulting buckypaper was calcined at 400[degrees]C in air in an oven for LI-hours to remove the surfactant which adsorbed on the tube surface and further cleaned and functionalized with hydrochloride (18%HC1). Different amount of Ammonium heptamolybdate ((N[H.sup.4][).sup.6]M[o.sup.7][O.sup.24] * 4[H.sup.2]0) were dissolved in water in order to make various concentration of heptamolybdate aqueous solution (0.05M, 0.1M, 0.5M). The buckypaper was impregnated into these molybdate solution over night, and dry naturally. These molybdate coated buckypaper was calcined in .argon atmosphere at different temperature (450[degrees]C, 600[degrees]C, 750[degrees]C) into to decompose the molybdate into molybdenum trioxide (Mo[0.sup.3]) nanopartides which decorate on the surface of carbon nanotubes, sometimes as twins. The particle size, single to twin ratio, and the density of Mo[0.sup.3] on the carbon nanotube network will be reported and the ideal conditions controlling the density and size of nanoparticles discussed.

3:30 SYNTHESIS AND CHARACTERIZATION OF OLIGO-BENZO[c] CINNOLINE ETHYNYLENES AS MOLECULAR JUNCTIONS**, Briclgette Sands*, Danielle Mitchell and Ghislain Manclouma, Albany State University, Albany, GA 31705. Oligo-benzo[c]cinnoline ethynylenes (OBEs) are being prepared with the goal of obtaining their self-assembled rnonolayers (SAMs) structures on different solid media. The ultimate objective is to study the potential of novel oligo-benzo[c]cinnoline ethynylenes as molecular junctions. Self-assembly of molecules on gold or other solid surfaces has emerged as a cornerstone in modern electronics. Using a scanning tunneling microscope (STM), the molecular structures of SAMs can be imaged at the nano scale to reveal polymorphism and other details of organization in two dimensions. Benzo[c]cinnoline (BC) and its derivatives are interesting because of their biological activities, their potential as ligands for metals, and also for their highly stable molecular conformations with different symmetries. Starting from available 2-nitroaniline, we accessed 3,8-dibromobenzo[c]cinnoline through a coupling reaction and a ring-forming diazotization. Subsequent cross-coupling of protected-acetylene to the core BC, afforded a monomer of benzo[c]cinnoline ethynyl-ene. Planned oliqomerization under moderate heat will afford the title compound.

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Publication:Georgia Journal of Science
Article Type:Conference news
Geographic Code:1USA
Date:Mar 22, 2014
Words:460
Previous Article:Friday paper presentations.
Next Article:Section IV: Physics, Mathematics, Computer Science, Engineering and Technology Science Hall W1008 Hasson M. Tavossi, Presiding.
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