Advanced Materials

Cover image for Advanced Materials

August 1990

Volume 2, Issue 8

Pages fmi–fmi, 345–387

  1. Masthead

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews
    1. Masthead (page fmi)

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020801

  2. Reviews

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews
    1. The development of electrically Conducting Polymers (pages 345–348)

      Dr. Herbert Naarmann

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020802

      The development of polyacetylenes, polythiophenes and polypyrroles, amongst other conducting polymers is traced from an industrial point of view by one of the pioneers in the field. The methods used for the production of the materials are described and present and future applications are assessed.

    2. The potential of The Graphite Lattice (pages 349–355)

      Prof. Klaus J. Hüttinger

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020803

      Carbon-based materials including carbon fibers and composites are the subject of this review. Structural aspects are examined, for example the microstructure of a spun carbon fiber shown in the figure, and the strength and other properties of the materials analyzed with respect to various applicatiosn e.g. as biomaterials and in reinforcement technology.

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    3. Conducting polymers—thirteen years of Polyacetylene Doping (pages 356–360)

      Dr. Siegmar Roth and Maria Filzmoser

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020804

      The insulator-to-metal transition, doping, the mechanism of conductivity, solitons, and organic ferromagnets are among the topics covered in this overview of developments in conducting polymers. The materials are already in commercial use in, for example, batteries. Further possibilities are examined and the latest developments highlighted.

  3. Communications

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews
    1. A conducting thallium salt of 2,5-dimethyl-N, N′-dicyanoquinone-diimine, [2,5-DMe-DCNQI]2Tl: Comparison with other related radical anion salts (pages 361–363)

      Prof. Siegfried Hünig, Hubert Meixner, Tobias Metzenthin, Uwe Langohr, Dr. Jost Ulrich von Schütz, Prof. Hans-Christopf Wolf and Prof. Ekkehart Tillmanns

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020805

      A radical anion salt based on thallium (see figure, where M = Tl) has been prepared. It is found to be the only such conducting compound, except the copper analogue, which shows a positive NMR knight shift indicating an electronic interaction between the central atom and the ligand.

    2. Intercalation chemistry of conducting polymers: New crystalline microlaminate phases in the polyaniline/feocl system (pages 364–366)

      Prof. Mercouri G. Kanatzidis, Dr. Chun-Guey Wu, Dr. Henry O. Marcy, Dr. Donald C. DeGroot, Dr. Carl R. Kannewurf, Dr. Athanasios Kostikas and Dr. Vasilios Papaefthymiou

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020806

      Molecular nano-composites of two electrically active but chemically deverse components, organic conducting polymers and inorganic metaloxide bronzes, can be formed by the in situ intercalative oxidative polymerization of aniline in FeOCl. Two forms of the normally amorphous polyaniline, in a cryustalline, well-defined environment have been discovered, one semiconducting and one metallic. These hybrid materials are also suitable for the study of oriented conducting polymers.

    3. Molecular materials for chemical and physical switching IV: Photomodulation of electric current by light-sensitive electron-transfer compounds—aryl/dihydroazulene-conjugates (pages 366–369)

      Prof. Jörg Daub, Christian Fischer, Dr. Josef Salbeck and Karl Ulrich

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020807

      Bichromophoric compounds containing the dihydroazulene ⇄ vinyl heptafulvene couple (see figure) with arenoid “R” groups which act as electron-transfer groups can be triggered by visible light to produce an electric current. They are therefore of use as molecular switches. A number of different arenoid substituent have been employed and the compounds examined.

    4. Bulk superconductivity up to 60 K in the In-Pb-Ca-Y-Sr-Cu-O system (pages 369–371)

      Ru-Shi Liu, Dr. Peter P. Edwards and Dr. Ping-Tien Wu

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020808

      A new high-Tc superconducting material based on the title system has been synthesized at one atmosphere of oxygen. X-ray powder diffraction as well as energy dispersive spectrometric analyses shwo a phase with the chemical composition (In0.05PB0.70Cu0.25) (Ca0.05Y0.05)Sr2Cu2Oy, which is isostructural with TlCaBa2Cu2O7, to be responsible for the superconductivity.

  4. Research News

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews
    1. Semiconductor wafer bonding (pages 372–374)

      Dr. V. Lehmann, Dr. I. W. K. Ong, Prof. U. Gösele, Dr. R. Stengl and Dr. K. Mitani

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020809

      High-voltage pn-diodes, and silicon on insulator (SOI) materials are two applications that could benefit from a new method of wafer bonding which can be carried out in a normal laboratory environment. The procedure, which involves spinning the wafers at high speed (see figure) thus creating a “micro-cleanroom” between them, could also have applications in micro-mechanical work and wafer protection.

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    2. Biomaterials highlights VI Dental implants (pages 375–377)

      Prof. Günther Heinke

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020810

      The design of implants, the materials used, and the interactions of these materials with the surrounding living tissue are examined with respect to dental applications.

    3. Molecular materials II Part A. Molecular electronics? (pages 378–379)

      Dr. Joel S. Miller

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020811

      The quest for the ultimate in miniaturization “molecular electronics” will be the subject of the next three articles in this series. The first of the three sets the scene with a discussion of the reasons for our interest in this “engineering down” process, and the components needed.

  5. Conference Report

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews
    1. Intermag'90 in Brighton (pages 380–382)

      Prof. Uwe Hartmann

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020812

      Uwe Hartmann of the Jülich Research Center reports on his recent visit to meeting on magnetic materials which was held on the south coast of Britain.

  6. Materials Forum

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews
    1. Materials Forum (pages 383–385)

      Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19900020813

  7. Book Reviews

    1. Top of page
    2. Masthead
    3. Reviews
    4. Communications
    5. Research News
    6. Conference Report
    7. Materials Forum
    8. Book Reviews

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