ISSN 0959-9428 JMACEP(4) 501-652 (1994) Journal of Materials Chemistry Synthesis, structures, properties and applications of materials, particularly those associated with advanced technology The first six papers in this issue were submitted in association with the 1st International Conference on Materials Chemistry held in Aberdeen in July 1993. CONTENTS 501 Neutron scattering investigation of hydrogenic species in the ammonium molybdenum bronze (NH,),~,,H,.,,MoO, R. C. T. Slade and H. A. Pressman 509 AC and DC electrochemical investigation of protonic conduction in calcium-doped barium cerate ceramics R. C. T. Slade, S. D. Flint and N. Singh 515 Studies of the spinel solid solution Co,Ru, -xFe,O, M. H. Mendonqa, M. R. Nunes, F. M. A. Costa, A. Carvalho and M.M. Godinho 519 Oriented microporous film of tetramethylammonium pillared saponite M. Ogawa, M. Takahashi, C. Kato and K. Kuroda 525 Ge-doped bismuth vanadate solid electrolytes: synthesis, phase diagram and electrical properties C. K. Lee, M. P. Tan and A. R. West 529 Preparation and characterization of heavy-metal oxide glasses: Bi,O,-PbO-B,O,-GeO, System V. C. Solano Reynoso, L. C. Barbosa, 0. L. Alves, N. Aranha and C. L. Cesar 533 Chromic materials. Part 1.-Liquid-crystalline behaviour and electrochromism in bis(octakis-n-alkylphthalocyaninato)lutetium(rrr) complexes T. Komatsu, K. Ohta, T. Fujimoto and I. Yamamoto 537 Discotic liquid crystals of transition-metal complexes T. Komatsu, K. Ohta, T. Watanabe, H. Ikemoto, T. Fujimoto and I. Yamamoto 541 Anderson-type ammonium hexamolybdotungstonickelates P.Porta, G. Minelli, G. Moretti, I. Pettiti, L. I. Botto and H. J. Thomas 547 Cation ordering in distorted perovskites (MLa)(MgTe)O,, M=Na, K M. L. Lopez, M. L. Veiga and C. Pic0 551 Intercalation of organic compounds in the layered host lattice MOO, H. Tagaya, K. Ara, J-i. Kadokawa, M. Karasu and K. Chiba 557 FTIR and Raman spectroscopic investigation of 2,2’-bipyridine adsorption on silica, alumina, zirconia and titania S. A. Bagshaw and R. P. Cooney 565 Studies of the sorption of triethyl phosphate by ion-exchanged smectite clays C. J. Williamson and P. O’Brien 571 X-Ray analysis of two phases in the barium borate, sodium barium borate and sodium borate ternary phase diagram J.Bedson, R. W. Lawrence and P. J. Picone 575 Preparation, structure and magnetic properties of a new nickel(m) oxide: YbSr,NiO, M. James and J. P. Attfield 579 Oxygen diffusion in YB~,CU,O,_~ mixed conductors: interpretation of T-jump measurements and experiments on hysteresis of conductivity F. Cellucci, D. Gozzi and M. Tomellini 585 Effect of preparation methods on properties of alumina/titanias M. Toba, F. Mizukami, S-i. Niwa, Y. Kiyozumi, K. Maeda, A. Annila and V. Komppa 59 1 Effect of salt concentration on the properties of poly [oxymethy1ene-o1igo(oxyethy1ene)]/Mg(C10,), polymer electrolytes J. H. Thatcher, K. Thanapprapasr, S-i. Nagae, S-M. Mai, C. Booth and J. R. Owen 599 Synthesis of a new family of comb polymers with side-chain esters and ionic conductivities of their films containing lithium trifluorome- thane sulfonate Y. Takebe, K.Hochi, T. Matsuba and Y. Shirota 605 Selective removal of silicon from zeolite frameworks using sodium carbonate R. Le Van Mao, S. Xiao, A. Ramsaran and J. Yao 611 Effect of composition on the lattice parameters and thermal behaviour of nickel(r1)-cobalt(r1) hydroxide nitrate solid solutions K. Petrov, N. Zotov, E. Mirtcheva, 0. Garcia-Martinez and R. M. Rojas 615 Preparation of ZnO-based varistors by the sol-gel technique G. Westin, A. Ekstrand, M. Nygren, R. Osterlund and P. Merkelbach 623 Synthesis and characterization of poly(ary1 ether-sulfone) and poly (tetrahydrofuran) (A-B), block copolymers L. Zhao, R. S. Mani, T. L. Martin, J. Mueller and D.K. Mohanty 63 1 H,S-sensitive thin film fabricated from hydrothermally synthesized SnO, sol M. Ando, S. Suto, T. Suzuki, T. Tsuchida, C. Nakayama, N. Miura and N. Yamazoe 635 Photochromic behaviour in the fluorescence spectra of 1,2-bis( 9-acetoxy-10-anthry1)ethanein silicate glass prepared by the sol-gel method T. Fujii, H. Yamamoto and K. Oki 641 Study of the Ru-Mo-0 and Ru-W-0 phase systems; rutile solid solutions Ru,-,M,O, N. J. Stedman, A. K. Cheetham and P. D. Battle 647 Novel synthetic pathway to Bi(Pb)-2223 phase with variable Ca: Sr ratio, Bi,,,Pb,,,Sr,,Ca,Cu,O,,: 1.85 dxd2.4 P. V. P. S. S. Sastry and A. R. West MATERIALS CHEMISTRY COMMUNICATION 651 Effect of drying temperature on the physical properties of titania aerogels C.J. Brodsky and E. I. KO i Cumulative Author Index ... 111 Conference Diary 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. 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