Points from Foregoing Letters

    Abstract

    THE presence of steric inhibition of coplanarity in certain polymethine (cyanine) sensitizing dyes is discussed by S. E. Sheppard, R. H. Lambert and R. D. Walker. It is adduced as a cause of modified spectral absorption and inefficiency of optical sensitizing of silver halides.

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    Points from Foregoing Letters. Nature 145, 391 (1940). https://doi.org/10.1038/145391b0

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