Reactions of Me3Sn-CC-(CC-)m-CC-SnMe3 (m= 0, 1) (1, 2), Me3Sn-(CC)m-p-C6H4-(CC)m-SnMe3 (m = 1, 2) (3, 4) with the platinum metal halide complexes, [Pt(XnBu3)2Cl2] (where X = P (5), As (6)) afford high molecular weight polymeric species, [-Pt(XnBu3)2-CC-(CC)m-CC-]n (7-10), and [-Pt(PnBu3)2-(CC)m-p-C6H4-(CC)m-]n (11, 12) in excellent yields. Investigations of the optical absorption and photoluminescence spectra of these complexes show extended π-electron conjugation through the metal sites on the chain, with a lower π-π* energy gap for triacetylenic than for the diacetylenic polymeric complexes. Well-resolved vibronic structure associated with the -CC- stretching frequency is observed for both absorption and emission, indicating strong electron-phonon coupling for the di- and triacetylenic polymers.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Materials Chemistry