Organometallic and conjugated organic polymers held ...
|Title||Organometallic and conjugated organic polymers held together by strong electrostatic interactions to form luminescent hybrid materials.|
|Author(s)||D. Bellows, E. Gingras, S. Aly, A. Abd-El-Aziz, M. Leclerc, P. Harvey|
|Journal||Section Title: Plastics Manufacture and Processing, Inorganic Chemistry (Washington, DC, United States)|
|Abstract||The organometallic polymers ([Ag(dmb)2]BF4)n (dmb = 1,8-diisocyano-p-menthane) and ([Pt2(dppm)2(CNC6Me4NC)](BF4)2)n (dppm = (Ph2P)2CH2, CNC6Me4NC = 1,4-diisocyano-tetramethylbenzene) were reacted with the conjugated org. polymers of the type (-Cz-C6H4-)n and (-Cz-)n, where Cz is a 2,7-linked carbazole unit substituted by (CH2)3SO3Na or (CH2)4SO3Na pendant groups at the N- position, to form polycation/polyanion hybrid materials. These rather insol. and amorphous (X-ray diffraction) materials were characterized by 1H and 13C NMR MAS (magic angle spinning), solid-state IR, and Raman spectroscopy as well as chem. 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 ([Pt2(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 assocd. 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). [on SciFinder(R)]|
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