TY - JOUR
T1 - Synthesis and comparison of the optical properties of platinum(II) poly-ynes with fused and non-fused oligothiophenes
AU - Devi, Lekshmi Sudha
AU - Al-Suti, Mohammed K.
AU - Zhang, Ning
AU - Teat, Simon J.
AU - Male, Louise
AU - Sparkes, Hazel A.
AU - Raithby, Paul R.
AU - Khan, Muhammad S.
AU - Köhler, Anna
PY - 2009/2/24
Y1 - 2009/2/24
N2 - The synthesis and characterization of the thieno[3,2-b]thiophene and dithieno[3,2-b:2′,3′-d]thiophene containing platinum(II) poly-ynes and their molecular precursors is described and the electronic structure is established by absorption, luminescence and photoinduced absorption measurements. A comparison of the electronic structure of the fused and the nonfused oligothiophenes, thieno[3,2-b]thiophene, dithieno[3,2-b:2′, 3′-d]thiophene, 2,2′-bithiophene, and 2,2′:5′,2″'- terthiophene incorporated in platinum(II) poly-ynes is reported. We find the singlet S1 and triplet T1 and T1 excited states to be at higher energy in thin films made from the fused systems than from the nonfused systems. For ligands with the same number of rings, we attribute this to the decreased number of double bonds in the fused system and to the presence of an additional sulfur atom in spacers with the same umber of double bonds.
AB - The synthesis and characterization of the thieno[3,2-b]thiophene and dithieno[3,2-b:2′,3′-d]thiophene containing platinum(II) poly-ynes and their molecular precursors is described and the electronic structure is established by absorption, luminescence and photoinduced absorption measurements. A comparison of the electronic structure of the fused and the nonfused oligothiophenes, thieno[3,2-b]thiophene, dithieno[3,2-b:2′, 3′-d]thiophene, 2,2′-bithiophene, and 2,2′:5′,2″'- terthiophene incorporated in platinum(II) poly-ynes is reported. We find the singlet S1 and triplet T1 and T1 excited states to be at higher energy in thin films made from the fused systems than from the nonfused systems. For ligands with the same number of rings, we attribute this to the decreased number of double bonds in the fused system and to the presence of an additional sulfur atom in spacers with the same umber of double bonds.
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U2 - 10.1021/ma802399a
DO - 10.1021/ma802399a
M3 - Article
AN - SCOPUS:66549102573
SN - 0024-9297
VL - 42
SP - 1131
EP - 1141
JO - Macromolecules
JF - Macromolecules
IS - 4
ER -