Abstract
ATTENTION has been directed in NATURE1 to a recent publication by Scheibe, Kandler and Ecker2 concerning the narrow absorption and fluorescence band exhibited by certain solutions of the dye 1: 1-diethylcyanine* chloride, in which these authors, on the basis of viscosity measurements, express the view that the effect is due to a reversible polymerization of ions of the dye. Since the publication of a previous note3, in which I have suggested that the narrow absorption band is characteristic of the molecular state, the ageing of aqueous solutions of 1:1-diethylcyanine chloride containing various concentrations of sodium chloride has been studied by the concurrent application of spectrographic, ultra-microscopic and streaming birefringence methods.
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References
” Research Items”, NATURE, 139, 378 (1937).
Scheibe, Kandler and Ecker, Naturwiss., 25, 75 (1937).
Jelley, E. E., NATURE, 138, 1009 (1936).
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JELLEY, E. Molecular, Nematic and Crystal States of I: I-Diethyl--Cyanine Chloride. Nature 139, 631 (1937). https://doi.org/10.1038/139631b0
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DOI: https://doi.org/10.1038/139631b0
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