TY - JOUR
T1 - Synthesis and optical spectroscopy of linear long-chain di-terminal alkynes and their Pt-σ-acetylide polymeric complexes
AU - Khan, Muhammad S.
AU - Kakkar, Ashok K.
AU - Long, Nicholas J.
AU - Lewis, Jack
AU - Raithby, Paul
AU - Nguyen, Paul
AU - Marder, Todd B.
AU - Wittmann, Felix
AU - Friend, Richard H.
PY - 1994
Y1 - 1994
N2 - A variety of straight-chain alkynes with extended π-conjugation through benzene, anthracene and thiophene linker units in the backbone, H-C≡C-R′-C≡C-R-C≡C-R′-C≡C-H (R = p-C 6H4, 9,10-C14H8, 2,5-C 4H2S; R′ = p-C6H4, p-C 6H4-C6H4-p) has been synthesized. The alkynyl chromophores with an anthracene spacer unit are highly emissive in solution with luminescence quantum yields of up to 0.5. The platinum σ-acetylide polymeric complexes of the above ligands show strong absorptions associated with metal-to-alkynyl ligand charge transfer (MLCT) transitions. It is clear that the π-conjugation is maintained through the metal centres and the optical gap for the polymer, [Pt(PBun 3)2-C≡C-p-C6H4-C≡C-9,10- C14H8-C≡C-p-C6H4-C≡C] n is lower than for the complexes [Pt(PBn 3)2-C≡C-R′-C≡C-R-C≡C-R′- C≡C]n (R = p-C6H4, 2,5-C 4H2S; R′ = p-C6H4; p-C 6H4-C6H4-p).
AB - A variety of straight-chain alkynes with extended π-conjugation through benzene, anthracene and thiophene linker units in the backbone, H-C≡C-R′-C≡C-R-C≡C-R′-C≡C-H (R = p-C 6H4, 9,10-C14H8, 2,5-C 4H2S; R′ = p-C6H4, p-C 6H4-C6H4-p) has been synthesized. The alkynyl chromophores with an anthracene spacer unit are highly emissive in solution with luminescence quantum yields of up to 0.5. The platinum σ-acetylide polymeric complexes of the above ligands show strong absorptions associated with metal-to-alkynyl ligand charge transfer (MLCT) transitions. It is clear that the π-conjugation is maintained through the metal centres and the optical gap for the polymer, [Pt(PBun 3)2-C≡C-p-C6H4-C≡C-9,10- C14H8-C≡C-p-C6H4-C≡C] n is lower than for the complexes [Pt(PBn 3)2-C≡C-R′-C≡C-R-C≡C-R′- C≡C]n (R = p-C6H4, 2,5-C 4H2S; R′ = p-C6H4; p-C 6H4-C6H4-p).
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U2 - 10.1039/JM9940401227
DO - 10.1039/JM9940401227
M3 - Article
AN - SCOPUS:37049067757
SN - 0959-9428
VL - 4
SP - 1227
EP - 1232
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
IS - 8
ER -