A polymeric charge-transfer complex (CT complex) was prepared from poly(N-vinylcarbazole) (PVCz) as an electron-donor polymer and poly[2-(methacryloyloxy)ethyl4,5,7-trinitro-9oxo-2-fluorenecarboxylate] [poly(l)] as an electron-acceptor polymer. Equilibrium constants, K, and thermodynamic parameters for the polymeric CT complex formation and for monomeric model systems were determined. The mole ratio of the components in the C T complex is 1 : 1 except for the system ethylcarbazole (EtCz)-poly(1). K decreases in the following order:PVCz-poly(1) > EtCz-1 > PVCz-1 %= EtCz-poly(1). The difference in K is mainly due to the entropy term.

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