TY - JOUR
T1 - Di-, tri-, pseudo-di- and pseudo-tetra-acetylenic polymers of platinum
T2 - Synthesis, characterization and optical spectra
AU - Lewis, Jack
AU - Khan, Muhammad S.
AU - Kakkar, Ashok K.
AU - Johnson, Brian F.G.
AU - Marder, Todd B.
AU - Fyfe, Helen B.
AU - Wittmann, Felix
AU - Friend, Richard H.
AU - Dray, Ann E.
N1 - Funding Information:
We thank NSERC of Canada for a post-doctoralf ellowship to A.K. Kakkar, SERC for support to MS. Khan and A.E. Dray, and Dhaka University (Bangladesh) for study leave (MSK). T.B. Marder thanks NSERC of Canada and the Ontario Centre for Materials Researchf or supporta nd Johnson Matthey Ltd., for a loan of preciousm etal salts.W e also thank Dr. Elizabeth Meehan at Polymer Laboratories( UK) and Dr. Ian Hinton at CIBA Geigy Plastics( UK) for molecular weight determinationsa nd Dr. Donald Bradley at the CavendishL aboratory for helpful discussions.
PY - 1992/2/25
Y1 - 1992/2/25
N2 - 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.
AB - 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.
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U2 - 10.1016/0022-328X(92)80033-T
DO - 10.1016/0022-328X(92)80033-T
M3 - Article
AN - SCOPUS:0003032493
SN - 0022-328X
VL - 425
SP - 165
EP - 176
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 1-2
ER -