《Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics》 2008年47卷24期
摘要
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The organometallic polymers ([Ag(dmb)(2)]BF4)(n) (dmb = 1,8-diisocyano-p-menthane) and ([Pt-2(dppm)(2)-(CNC6Me4NC)](BF4)(2))(n) (dppm = (Ph2P)(2)CH2, CNC6Me4NC = 1,4-diisocyano-tetramethylbenzene) were reacted with the conjugated ...
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The organometallic polymers ([Ag(dmb)(2)]BF4)(n) (dmb = 1,8-diisocyano-p-menthane) and ([Pt-2(dppm)(2)-(CNC6Me4NC)](BF4)(2))(n) (dppm = (Ph2P)(2)CH2, CNC6Me4NC = 1,4-diisocyano-tetramethylbenzene) were reacted with the conjugated organic polymers of the type (-Cz-C6H4-)(n) and (-Cz-)(n), where Cz is a 2,7-linked carbazole unit substituted by (CH2)(3)SO3Na or (CH2)(4)SO3Na pendant groups at the N- position, to form polycation/polyanion hybrid materials. These rather insoluble and amorphous (X-ray diffraction) materials were characterized by H-1 and C-13 NMR MAS (magic angle spinning), solid-state IR, and Raman spectroscopy as well as chemical analyses. The hybrids exhibit fluorescence and phosphorescence arising from the polycarbazole units where evidence for a heavy atom effect is provided (Na < Ag < Pt) from the relative enhanced phosphorescence intensity, as well as triplet-triplet energy transfers from the ([Ag(dmb)(2)](+))(n) to the polycarbazole and from the polycarbazole to the ([Pt-2(dppm)(2)(CNC6Me4NC)](2+))(n) unit. Evidence for energy transfer in these polymeric materials is provided from time-resolved emission spectroscopy, where the emission band associated with the ([Ag(dmb)(2)](+))(n) is found to be quenched where both the relative intensity and emission lifetime exhibit a large decrease (microsecond to nanosecond time scale).
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