ISSN 0959-9428 JMACEP(2) 157-306 (1991) Journal of Materials Chemistry Synthesis, structures, properties and applications of materials, particularly those associated with advanced technology CONTENTS 157 FEATURE ARTICLE. Solid electrolytes and mixed ionic-electronic conductors: an applications overview A. R. West 163 Compound and solid-solution formation, phase equilibria and electrical properties in the ceramic system Zr0,-La,O,- Ta,O, C. Zheng and A. R. West 169 Thermal and X-ray diffraction studies of liquid crystals incorporating a perfluoroalkyl group T. Doi, Y. Sakurai, A. Tamatani, S. Takenaka, S. Kusabayashi, Y. Nishihata and H. Terauchi 175 Structure evolution during thermal processing of high- T, ceramic superconductors produced using sol-gel techniques G.Kordas, G. A. Moore, J. D. Jorgensen, F. Rotella, R. L. Hitterman, K. J. Volin and J. Faber 181 Role of fractal structure on thin-film processing of YBa2Cu30,-, using alkoxide sols G. Kordas, G. A. Moore, M. B. Salamon and J. B. Hayter 191 Depth profiles and electrochemical properties of IrO, electrocatalysts stabilized with TiO, A. De Battisti, A. Barbieri, A. Giatti, G. Battaglin, S. Daolio and A. Boscolo Boscoletto 197 Paramagnetic rod-like liquid crystals, bis[5-(4-alkoxybenzoyloxy)salicylaldehyde]copper(11) E. Campillos, M. Marcos, J. L. Serrano and P. J. Alonso 20 1 Database analysis of crystal-structure-determining interactions involving sulphur: implications for the design of organic metals G. R. Desiraju and V. Nalini 205 Intercalation of 2-aminoethylferrocene into the layered host lattices MOO,, 2H-TaS, and a-Zr(HPO,), HzO K.Chatakondu, C. Formstone, M. L. H. Green, D. O’Hare, J. M. Twyman and P. J. Wiseman 213 X-Ray photoelectron spectroscopy of new soluble polyaniline perchlorates: evidence for the coexistence of polarons and bipolarons M. B. Inoue, K. W. Nebesny, Q. Fernando and M. Inoue 217 Alkyloxy-substituted CTTV derivatives that exhibit columnar mesophases V. Percec, C. G. Cho and C. Pugh 223 Oxonol dyes: X-ray crystallographic and solid-state ’ nuclear magnetic resonance studies of some organic semiconductors M. C. Grossel, D. J. Edwards, A. K. Cheetham, M. M. Eddy, 0.Johnson and S. R. Postle 233 Elastic and Coulombic contributions to real-space hole pairing in doped La,CuO, X.Zhang and C.R. A. Catlow 239 Preparation and crystal structure of U-phase Ln3(Si,-,A13 +x)012+xNz-x(~ x0.5,Ln =La, Nd) P-0. Kall, J. Grins, P-0. Olsson, K. Liddell, P. Korgul and D. P. Thompson 245 Non-linear optical properties of Group 10 metal alkynyls and their polymers W. J. Blau, H. J. Byrne, D. J. Cardin and A. P. Davey 25 1 Synthesis and mesomorphism of stilbazole complexes of rhodium(1) and iridium@) D. W. Bruce, D. A. Dunmur, M. A. Esteruelas, S. E. Hunt, R.Le Lagadec, P. M. Maitlis, J. R. Marsden, E. Sola and J. M. Stacey 255 High-birefringence materials using metal-containing liquid crystals D. W. Bruce, D. A. Dunmur, P. M. Maitlis, M. M. Manterfield and R. Orr 259 Analytical characterization by X-ray photoelectron spectroscopy of quaternary chalcogenides for cathodes in lithium cells C.Malitesta, D. Centonze, L. Sabbatini, P. G. Zambonin, L. P. Bicelli and S. Maff 265 Electron paramagnetic resonance spectroscopy of Cu+/Cu2+ p”-alumina D. Gourier, D. Vivien, B. Dunn and L. Salmon 27 1 Aromatic ether-ketone-‘)(’ polymers. Part I.-Synthesis and properties P. J. Horner and R. H. Whiteley 28 1 Ammonium-ion motions in the hexagonal tungsten trioxide framework. A neutron scattering study of the bronze (NH,),,,,WO, and of [(NH4),0]o,08,W0, R. C.T. Slade, P. R. Hirst and B. C. West 289 Solid-solution formation, electrical properties and zero-resistance behaviour in the spinel system MgzTi04-MgTi204 T. J. Cogle, C. A. S. Mateus, J. H. Binks and J. T. S. Irvine 293 Synthesis of a crowned azobenzene liquid crystal and its application to thermoresponsive ion-conducting films K.Kimura, M. Hirao and M. Yokoyama MATERIALS CHEMISTRY COMMUNICATIONS 295 Structure of La,,,Sr,,,CuO,,,,. Powder neutron diffraction on very small sample volumes D. B. Currie and M. T. Weller 297 Isomorphous substitution in non-linear optical KTiOPO,. Time-of-flight neutron powder diffraction study of K,,,Rb,,,TiOPO, S. J. Crennell, A. K. Cheetharn, J. A. Kaduk and R. H. Jarrnan 299 Promotion of the metal-oxide support interaction in the Ni/TiO, catalyst. Crucial role of the method of preparation, the structure of TiO, and the NiTiO, intermediate G. Sankar, C. N. R. Rao and T. Rayrnent 301 Novel chemical preparative route for semiconducting MoSe, thin films K. C. Mandal and 0.Savadogo 303 Photoinduced phase transitions in novel liquid-crystalline copolymers C. H. Legge, M. J. Whitcornbe, A. Gilbert and G. R. Mitchell 305 Book Reviews: R. M. Barrer; F. P. Glasser; W. C. Thompson Note: Where an asterisk appears against the name of one or more authors, it is included with the authors’ approval to indicate that correspondence may be addressed to this person.