Abstract
IN recent years Szent-Györgyi has directed attention to the possible importance of the electrical properties of organic molecules in biochemical catalysis1 and has given evidence for photoconductivity in gelatin2. An approach to the theory in trans-conjugated polyenes has been indicated by N. S. Bayliss3. Hoping to obtain a system suitable for quantitative investigation, I have examined the electrical conductivity of two phthalocyanines. These substances, described by Linstead and co-workers4, form a group of conjugated structures closely related to the biologically important porphyrins. They are particularly suitable for a research of this kind, because of their high degree of involatility and thermal stability. Their crystal structures are known from the work of J. M. Robertson5.
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References
Szent-Györgyi, A., Nature, 148, 157 (1941); "Chemistry of Muscular Contraction" (Academic Press, New York, 1947).
Szent-Györgyi, A., Nature, 157, 875 (1946).
Bayliss, N. S., J. Chem. Phys., 16, 287 (1948).
Linstead, R. P., J. Chem. Soc., 1016 (1934) and later papers. See Ann. Rep. Chem. Soc., 34, 369 (1937).
Robertson, J. M., J. Chem. Soc., 615 (1935); 1195 (1936); 219 (1937); Ann. Rep. Chem. Soc., 37, 188 (1940).
Wilson, A. H., "Semiconductors and Metals" (Cambridge University Press, 1939).
Wilson, A. H., Proc. Roy. Soc., A, 133, 458 (1931); 134, 27 (1932). Mott, N. F., and Gurney, R. W., "Electronic Processes in Ionic Crystals", 156–158 (Oxford University Press. 1940).
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ELEY, D. Phthalocyanines as Semiconductors. Nature 162, 819 (1948). https://doi.org/10.1038/162819a0
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DOI: https://doi.org/10.1038/162819a0
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