Single-source molecular precursors

The recent discovery of H0B[0Si(0 Bu)3]2 has allowed access to potential single-source molecular precursors to M/B/Si/0 materials. 

The continued development of new single-source molecular precursors should lead to increasingly complex mixed-element oxides with novel properties. Continued work with grafting methods will provide access to novel surface structures that may prove useful for catalytic apphcations. Use of molecular precursors for the generation of metal nanoparticles supported on various oxide supports is another area that shows promise. We expect that the thermolytic molecular precursor methods outlined here will contribute significantly to the development of new generations of advanced materials with tailored properties, and that it will continue to provide access to catalytic materials with improved performance. 

Vittal JJ, Deivaraj TC (2002) Group 11 and 13 metal thiocarboxylate compounds as single source molecular precursor for bulk metal sulfide materials and thin films. Progress in Crystal Growth and Characterization of Materials 45(1-2), 21-27... 

Gci c j,Si tSnj, layers grown over time directly on Si wafers. We also describe synthesis of films and nanometer-scale islands of Sii (Ge ( grown on Si(l 00) substrates via a unique single-source molecular precursor method. This new approach allows precise control of concentration and structure at the atomic level and it is particularly useful for development of composi-tionally homogeneous and uniform assemblies of nanoscale structures. 

The recent synthesis of a single-source molecular precursor containing aluminum with 0Si(0 Bu)3 and 02P(0 Bu)2 ligands provided an important step toward general use of molecular precursor routes to materials with more complicated stoichiometries. Indeed, it was shown that this new complex, [( Bu0)3Si0]2Al[p-02P(0 Bu)2]2Al(Me)0Si(0 Bu)3, was readily converted to homogeneous SiyAl/P/0 materials under mild thermolytic conditions via loss of isobutene, H2O, and CH4(Eq. 2) [58]. 

Chemistry of Metal Alkoxides Used as Single-Source Molecular Precursors... 

Basic principles required for the formation with structural description of hetero-metaUic alkoxides used as single-source molecular precursors toward the synthesis of nanomaterials with required functional properties at the nanoscale. 

Chapter 2 highlights the state of the art with cost-effective synthesis of ultra-pure functional nanomaterials from single source molecular precursors, to understand the structural-functional surface properties relationship based on chemical-thermal stability of metal ions as well as Lewis acidic behavior of the metal ion in the coordinated state. 

Catalytic activity is closely dependent on the method of preparation, so considerable attention has been focused upon new preparation methods to improve the performance of carbon-supported platinum alloy catalysts in DMFC applications. The simultaneous reduction of metal salts [86-88], microwave-assisted reactions [89, 90], micro-emulsion-based synthesis [91-93], and the reduction of single-source molecular precursors [94-99] have been used to various extents. 

A template-assisted synthesis of boron carbide nanowires was published by Pender and Sneddon. In this method, a linked cage 6,6 -(CH2)6(BioHi3)2 was selectively chosen as the single-source molecular precursor due to the fact that the ratio of boron to carbon in it closely matches that of boron carbide (B4C). This precursor compound is air stable with a melting point of 96°C, ° which helped... 

Pender, M. J. and Sneddon, L. G. An efficient template synthesis of aligned boron carbide nanofibers using a single-source molecular precursor. Chem. Mater, 2000,12, 280-283. 

Recently, our group has reported the synthesis of CdTe nanorods using solvothermal route from two different single source molecular precursors and their subsequent characterization by XRD and SEM [271], Initially, the single source molecular precursor Cadmium complex of bis-(aminopropyl) telluride has been prepared as per the scheme shown below (Fig. 6) ... 

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