Optical absorption and photoluminescence measurements on the title polymers, [graphic omitted]Pt(PBu3n)2—(C![[triple bond, length half m-dash]](https://www.rsc.org/images/entities/char_e007.gif)
C)m—CC[graphic omitted]n(m= 1, 2) show that there is appreciable π-electron conjugation extending through the metal sites on the chain, with a lower π–π* energy gap for the triacetylenic than for the diacetylenic compound.
B. F. G. Johnson, A. K. Kakkar, M. S. Khan, J. Lewis, A. E. Dray, R. H. Friend and F. Wittmann, J. Mater. Chem., 1991, 1, 485 DOI: 10.1039/JM9910100485
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