Optical absorption and photoluminescence measurements on the title polymers, [graphic omitted]Pt(PBu3n)2—(CC)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.
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Johnson et al. (1991) studied this question.
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