Joel: Advan. Mat. Update

Andy
Luminescence Spectra and Dynamics of Mn-Doped CdS Core/Shell Nanocrystals.
A. Ishtzumt and Y. Kanemitsu
Advan. Mat. (2006)18, 1083.

Summary:
The overcoating of CdS:Mn nanocrystals by a thin shell of non-doped CdS or ZnS results in remarkably improved photoluminescence properties. The CdS:Mn/CdS and CdS:Mn/ZnS nanocrystals presented in this work (see figure) show a much more efficient Mn-related photoluminescence than the non-coated nanocrystals. These nanocrystals are expected to find applications in flat-panel displays, high-density optical data storage materials, and fluorescence labels for biological imaging

Bryan
Growing Metal Nanoparticles by Enzymes
I. Willner, R. Baron, B. Willner.
Advan. Mat. (2006)18, 1109.

Abstract:
Enzymes act as catalysts for the growth of metallic nanoparticles (NPs). The enzymemediated growth of metallic NPs provides a general means to follow biocatalyzed transformations, and to develop optical sensors for different substrates such as glucose, L-DOPA, alcohols, lactate or nerve gas analogs. Enzymes modified with Au NPs act as biocatalysts for the fabrication of metallic nanowires. The dip-pen nanolithography of NP-functionalized enzymes on Si surfaces yields biocatalytic templates that enable the orthogonal evolution of nanowires consisting of different metals.

Andre, Joel
Molecular Materials by Self-Assembly of Porphyrins, Phthalocyanince, and Perylenes
J.A.A.W. Elemans, R. van Hameren, J.M. Nolte, A.E. Rowan.
Advan. Mat. (2006)18, 1251.

Abstract:
Porphyrins, phthalocyanines, and perylenes are compounds with great potential for serving as components of molecular materials that possess unique electronic, magnetic and photophysical properties. In general, a highly specific communication between a large number of these chromophores is required in order to express their function to a maximal level, and for this reason it is of importance to construct arrays in which the molecules are organized in well-defined geometries with respect to their neighbors. This review is an account of some recent efforts to construct highly ordered assemblies of porphyrins, phthalocyanines, and perylenes by means of self-assembly in solution and on surfaces, and by attaching them to polymeric scaffolds.

Rob, Interesting Cu(I) complex...
Highly Luminescent Cu(I) Complexes for Light-Emitting Electrochemical Cells.
N. Armaroli, G. Accorst, M. Holler, O. Moudam, J.F. Nierengarten, Z. Zhou, R.T. Wegh, R. Welter.
Advan. Mat. (2006)18, 1313.

Summary:
Highly luminescent CuI complexes with one phenanthroline and one (bis[2-(diphenylphosphino)phenyl]ether) ligand show an emission quantum yield of up to 28 % upon deactivation of the metal-to-ligand charge-transfer excited states; their X-ray crystal structure shows a distorted tetrahedral geometry (see figure and inside cover). One of these compounds is used as an active material in a light-emitting electrochemical cell; it exhibits an efficiency similar to that of RuII-type complexes.