Journal of Materials Chemistry Scientific Advisory Editor Profcssor Martin R. Bryce Departmcnt of Chemistry University of Durham South Road Durham DHl 3LE. UK Associate Editor Professor Jean Etourneau ICMCB Avcnue du Docteur Schweitzcr 33600 Pcssac Francc Editorial board Allan E. Underhill (Chairman) Bangor Peter G. Bruce St. Andrews Martin R. Bryce Durham Jcan Etourneau Bordeirux Managing Editor Janet L. Dean Deputy Editor Zoe G. Lewin Assistant Editor Graham F. McCann Editorial Secretary Miss D. J. Halls Wendy R. Flavell UMIST John W. Goodby Hull Klaus Praefcke Berlin Brian J. Tighe Aston International advisory editorial board K. Bechgaard Riso. Denmark J. Y. Becker Beer-Sheuu, Israel A. J. Bruce Murray Hill, USA E.Chiellini Pisrr, Iraly D. Coates PO&. UK P. Day London, UK D. A. Dunmur Sheffield. UK B. Dunn Los Angeles, USA W. J. Feast Durham, UK R. H. Friend Ctrmhridp, UK A. Fukuda Tokyo, Japan D. Gatteschi Florence, Ital-v P. Hodge Manclwster, UK Information for authors The Royal Society of Chemistry welcomes submission of manuscripts intended for publication in two forms, Articles and Materials Chemistry Communications. These should describe original work of high quality dealing with the synthesis, structures, properties and applications of materials, particularly those associated with advanced technology. Full papers contain original scientific work that has not been published previously. However, work that has appeared in print in a short form such as a Materials Chemistry Communication is normally acceptable.Four copies of Articles including a top copy with figures etc. should be sent to the Managing Editor at the Cambridge address. Journal of Muterials Chemistry (ISSN 0959-9428) is published monthly by The Royal Society of Chemistry, Thomas Graham House, Science Park, Milton Road, Cambridge CB4 4WF, UK. All ordcrs accompanied with payment should be sent directly to The Royal Society of Chemistry, Turpin Distribution Services Ltd.. Blackhorse Road, Letchworth. Herts SG6 IHN, UK. NB Turpin Distribution Services Ltd., distributors, is wholly owned by The Royal Society of Chemistry. 1996 Annual subscription rate EEA (incl. UK) E519.00, USA $934.00. Rest of World E532.00.Customers ~ A. B. Holmes Cambridge, UK H. Inokuchi Okuzuki, Japan W. Jcitschko Miinstrr, Germany 0.Kahn Bordeuu?r, France J. Livage Paris, France R. McCullough Pittsburgh, USA J. S. Miller Suit Lake City, USA K. Mullen Muinz, Germany L. Niinisto Espoo, Finland M. Nygren Stockholm, Sweden Y. W. Park Seoul, Korea N. Plate Moscow, Russia Materials Chemistry Communications contain novel scientific work in short form and of such importance that rapid publication is warranted. The total length is normally restricted to two printed A4 pages. However, special consideration will be given to communications with a large amount of essential diagramatic information.Submission of a Materials Chemistry Communication can be made either to the Managing Editor at the Cambridge addrcss, or via a member of the International Advisory Editorial Board. In the latter case, the top copy of the manuscript including any figures etc., together with the name of the person to whom the Communication is being submitted, should be sent simultaneously to the Managing Editor at the Cambridge address. All authors submitting work for publication are should make payments by cheque in sterling payable on a UK clearing bank or in US dollars payable on a US clearing bank. Air freight and mailing in the USA by Publications Expediting Inc., 200 Meacham Avenue, Elmont, NY 11003. USA POSTMASTER: send address changes to Journal qf Materials Chemistry, Publications Expediting Inc., 200 Meacham Avenue, Elmont, NY 11003.Second Class postage paid at Jamaica, NY 11431. All other dispatches outside the UK by Bulk Airmail within Europe, Accelerated Surface Post outside Europe. PRINTED IN THE UK. ~ ~~~~ Production Editor Stephanie Shah Technical Editors Carole J. Nerney Alan J. Holder Graphics Designer Ms C. Taylor-Reid Anthony R. West Aherdeen John D. Wright Canterhury Janet L. Dean (Secretary) M. Prato Trirste, Italy C. N. R. Rao Bangalore, India B. Raveau Caen, Frcrnce T. Rojo Bilhao, Spain J. Rouxel Nantes, France A. Simon Stuttgart. Germuny M. A. Subrdmanian Wilmington, USA S. Takahashi Osaka, Japrrn J. 0.Thomas Uppsulu, Sweden M.Vallet-Regi Madrid. Spain D. E. W. Vaughan Annundale, USA Y. Yamashita Okazaki, Japan required to sign an exclusive copyright licence. All submissions should be accompanied by a completed form (a blank for photocopying is reproduced at the end of the Information for Authors in Issue l), without which publication cannot proceed. A completed graphical abstract template should also accompany each submission. Full details of the form of manuscripts for Articles and Materials Chemistry Communications, conditions for acceptance etc. are given in Issue 1 of Journal of Muterials Chemistry published in January of each year, on the world wide web (htpp://chemistry.rsc.org/rsc/) or may be obtained from the Managing Editor. There is no page charge for papers published in Journal of Muterials Chemistry. Fifty reprints are supplied free of charge. Janet L. Dean, Managing Editor Tel.: Cambridge (01223) 420066 E-Mail (INTERNET): DEANJ@,RSC.ORG Fax: (01223) 420247 Advertisement sales: Tel. +44 (0)171-287 3091; Fax +44 (0)171-494 1134 ~~___ 0The Royal Society of Chemistry, 1996. All rights reserved. No part of this publication may be reproduced, storcd in a retrieval system, or transmitted in any form, or by any means, electronic, mechanical, photographic, recording, or otherwise, without the prior permission of the publishers.