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  • 1
    Electronic Resource
    Electronic Resource
    Corrosion protection by the organic metal polyaniline: results of immersion, Volta potential and impedance studies (2000)
    Springer
    Fresenius' journal of analytical chemistry 367 (2000), S. 343-345 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Properties of the new polyaniline containing primer CORRPASSIV™ sealed with two different top coats are characterised and compared with top coated samples using no or a conventional zinc-rich primer. Measurements were made using scanning Kelvin-probe (SKP), electrochemical impedance spectroscopy (EIS), voltammetry and analysis of iron and zinc content in electrolytes for testing. Results are presented and the powerful corrosion protection using the organic metal is shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160000400
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  • 2
    Electronic Resource
    Electronic Resource
    Use of Organic Metal to enhance the operating window and solderability of immersion tin (1999)
    Bradford : Emerald
    Circuit world 25 (1999), S. 8-16 
    Details
    ISSN: 0305-6120
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: As an alternative to hot air levelling, a fundamentally new surface finish chemistry and process for solderability preservation of printed circuit boards is described: a pretreatment of the copper followed by an optimized formulation of an immersion tin. The precise and reproducible surface finish formation offers reliable solderability, economic and technical advantages for all kinds of PCBs, even for those with the most modern miniaturized structures. The deposition chemistry and ageing properties of the new Organic Metal/tin surface is discussed, based on electrochemical, wet chemical and electron microscopy studies. The results culminate in an almost complete basic understanding of the tin chemistry and the surface finish performance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03056129910290733
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  • 3
    Electronic Resource
    Electronic Resource
    Talking point. Intrinsically conducting polymers: A critical stage in research strategy? (1991)
    Weinheim : Wiley-Blackwell
    Advanced Materials 3 (1991), S. 507-509 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19910031012
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  • 4
    Electronic Resource
    Electronic Resource
    Circulardichroismus, LXXIII. Chiroptische Eigenschaften cyclischer Anhydride (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1036-1047 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Circular Dichroism, LXXIII1). - Chiroptical Properties of Cyclic AnhydridesCyclic anhydrides exhibit two to four Cotton effects below 260 nm. Applying qualitative MO theory leads to predictions about the correlation between absolute conformation and signs of the first two CD bands for such anhydrides with an inherently achiral or inherently chiral (C2 symmetry) chromophore. For the first, the two CD bands at longest wavelengths have the same sign and conform with the sector rule of figure 5 with 12 sectors. For the anhydride chromophore with C2 symmetry a helicity rule holds: A negative interplanar angle between the two planes of the C = O groups leads to a negative Cotton effect around 240 nm and to a positive one around 220 nm.
    Notes: Cyclische Anhydride zeigen zwei bis vier Cotton-Effekte unterhalb von 260 nm. Mit Hilfe der qualitativen MO-Theorie lassen sich Voraussagen über den Zusammenhang zwischen absoluter Konformation und Vorzeichen der ersten beiden CD-Banden für solche Anhydride mit inhärent achiralem und inhärent chiralem (C2-Symmetrie) Chromophor ableiten. Bei ersteren haben die beiden längstwelligen CD-Banden gleiches Vorzeichen, dafür gilt die Sektorregel mit 12 Sektoren der Abbildung 5. Für den Anhydridchromophor mit C2-Symmetrie gilt eine Helizitätsregel: Ein negativer Interplanarwinkel zwischen den beiden Ebenen der C = O-Gruppen führt zu einem negativen Cotton-Effekt um 240 nm und zu einem positiven um 220 nm.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919790714
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  • 5
    Electronic Resource
    Electronic Resource
    Dissipative structure formation in colloidal systems (1993)
    Weinheim : Wiley-Blackwell
    Advanced Materials 5 (1993), S. 300-305 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19930050418
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  • 6
    Electronic Resource
    Electronic Resource
    Beitrag zur Diskussion um die Morphologie von polyacetylen (1984)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 185 (1984), S. 1265-1275 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: We analysed by raster electron microscopy Luttinger-polyacetylene as a powder and as a film, both in pristine and (SbF6--electrochemically) doped form. The samples had been intensively washed with MeOH/HCl. One sample had, according to the results of transmission electron microscopy, fiber morphology. All samples show globules as primary structure arranged in clusters (in powder), mono-layers, or chains (in film) (which previously led to “fibril theory”). The primary spherical particles have diameters from 0,02-0,05 μm. The “fibril” sample has very small spherical primary particles, which may develop using low catalyst amounts. Our results support that the conductivity characteristics is governed by phenomena antiparallel to the chain direction (change-transfer-complexes).
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1984.021850619
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  • 7
    Electronic Resource
    Electronic Resource
    Anti-Markownikow-Addition bei der Oxymercurierung von 19-Hydroxy-5-cholesten-3β-ylacetat (1978)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 1327-1332 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Anti-Markovnikov Addition in the Oxymercuration of 19-Hydroxy-5-cholesten-3β-yl AcetateOxymercuration of 19-hydroxy-5-cholesten-3β-yl acetate (1a) gives the anti-Markovnikov product 2. Reduction of 2 with sodium tetrahydroborate yields the C-5-epimers 3b and 6b.
    Notes: 19-Hydroxy-5-cholesten-3β-ylacetat (1a) reagiert mit Quecksilber(II)-trifluoracetat zum Anti-Markownikow-Produkt 2. Reduktion von 2 mit Natriumtetrahydroborat führt zu den 5-Epimeren 3b und 6b.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197819780814
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  • 8
    Electronic Resource
    Electronic Resource
    Electrical conductivity in heterogeneous polymer systems. V (1): Further experimental evidence for a phase transition at the critical volume concentration (1991)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 31 (1991), S. 1200-1206 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A new dispersion/flocculation phase transition model for the conductivity jump at the critical volume concentration of a conductive phase in an insulating matrix polymer is discussed. New experimental-data including: SEM evaluations of the “seam” structure, excess pyrolytic residue analysis, BET measurements of dependence on conductive phase content, and temperature dependence of conductivity are presented for supporting the new model. Finally a first qualitative step towards a new non-equilibrium thermodynamical description of these dissipative structures will be described.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760311608
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