Color and Constitution: One Hundred Years of Research

Science  17 Mar 1978:
Vol. 199, Issue 4334, pp. 1163-1167
DOI: 10.1126/science.199.4334.1163


Useful theories and models of the color and constitution of unsaturated organic compounds have been sought for more than a century. The promises of quantum chemistry have not yet been realized satisfactorily. The polymethine concept, a modern chemical theory of constitution, is an auspicious development.