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The carbon nanotubes (CNTs) have been successfully modified to absorb in near‐infrared (NIR) region by synergetic functionalization with an important biopolymer, polylactic acid (PLA) and subsequent in‐situ deposition of Pd nanoparticles. This process has also extended the absorption ability of Pd nanoparticles towards NIR region apart from its classical absorption in UV and visible regions. Thus fabricated CNTs‐PLA‐Pd demonstrated excellent photothermal effect under exposure to 980 nm laser and significant stability against photo‐bleaching and corrosiveness. A stepwise increment in the photothermal effect of CNTs was attained by covalent grafting of PLA and successive deposition of Pd nanoparticles. The photothermal effect of CNTs‐PLA‐Pd was proportional to its concentration level and photothermal conversion efficiency calculated for CNTs‐PLA‐Pd was 26.5 %. The photothermal effect of CNTs‐PLA‐Pd under illumination to 980 nm laser was higher than that of 808 nm laser. The temperature attained during photothermal effect for CNTs‐PLA‐Pd was beyond 60 °C, which far exceeds the temperature survival level of cancer cells. Overall, the rational integration of CNTs, PLA and Pd nanoparticles in CNTs‐PLA‐Pd by reported strategy could offer a suitable avenue for advancement of cancer therapy. [ABSTRACT FROM AUTHOR]

The synthesis of polyaniline (PANI) nanospheres using a simple template-free method is described. The polymerization of aniline in aqueous medium was accomplished using ammonium persulfate without any protonic acid. The UV-visible spectrum of the PANI nanospheres displayed the characteristic absorption peak of the π-π* transition of the benzenoid ring at 355 nm. The oxidation state of the PANI nanospheres was identified with Fourier transform infrared spectroscopy by comparing the two bands at 1582 cm−1 (ring stretching in quinoid unit) and 1498 cm−1 (ring stretching in bezenoid unit). X-ray diffraction patterns demonstrated the low crystallinity of the PANI nanospheres. The morphology of the PANI nanospheres was spherical and their mean diameter was found to be in the range 3-12 nm. The thermal behavior of the PANI nanospheres was studied using thermogravimetric analysis. The effect of doping of HCl and H2SO4 on the PANI nanospheres was studied by measuring the current as a function of time of exposure. A high electrical conductivity of 6 × 10−2 S cm−1 was obtained for the PANI nanospheres doped with 100 ppm HCl, their optimum doping state. Copyright © 2011 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

The title compound, [Er(C5H7O2)3(C12H8N2)], is a mixed-ligand metal–organic precursor for chemical vapour deposition, with the Er atom being eight-coordinate. The coordination polyhedron, described as a distorted square anti­prism, is formed by three bidentate (chelating) acetyl­acetonate residues and a phenanthroline ligand in the apical positions. Mol­ecular assembly via C—H⋯O hydrogen bonds generates a sheet structure in the ac plane. Weak co-operative C—H⋯π inter­actions form mol­ecular dimers and contribute to the stability of the inter­sheet packing. The supra­molecular assembly contains voids which form hydro­phobic porous channels, surrounded by a cluster of dimers. [ABSTRACT FROM AUTHOR]

The title compound, [Ni(C8H13O3)2(C5H5N)2]·C6H6, a potential metal–organic chemical vapour deposition (MOCVD) precursor, crystallizes with half a molecule of the complex and half a molecule of benzene in the asymmetric unit, both molecules being centrosymmetric. The Ni atom is at the origin (0, 0, 0), while the centroid of the benzene solvent molecule is at another centre of symmetry (0,  ,  ). The Ni atom has a distorted octahedral environment, with four O atoms from the bidentate tert-butyl-3-oxobutanoate ligand units in the axial positions and the two N atoms of the pyridine ligands at the apical positions. C—H...π contacts [3.021 (4) Å] between solvent benzene and the pyridine ligand, along with π–π stacking interactions [3.896 (1) Å] between adjacent pyridine ligands, result in a packing motif along the c axis. [ABSTRACT FROM AUTHOR]

In the title complex, [Al(C8H13O3)3], a potential metal-organic chemical vapour deposition (MOCVD) precursor, three bidentate ligand mol­ecules are bound to the metal atom, forming an octa­hedral geometry. Two non-planar six-membered chelate rings adopt screw-boat conformations, while the third ring has a conformation that lies about halfway between an envelope and a screw-boat. [ABSTRACT FROM AUTHOR]

In the title compound, [Al(C(5)H(7)O(3))(3)], three acac-type ligands (methyl 3-oxobutanoate anions) chelate to the aluminium(III) cation in a slightly distorted AlO(6) octa-hedral coordination geometry. Electron delocalization occurs within the chelating rings.