Abstract
Polymer blends containing electron donor (N-ethylcarbazol-3-yl)methyl methacrylate (NEC-MM) and electron acceptor 2-[(3,5-dinitrobenzoyl)oxy]ethyl methacrylate (DNBEM) moieties were studied. The number of inter- vs intramolecular charge-transfer (CT) interactions was varied by preparing blends of polydonor with polyacceptor, as well as blends containing a homopolymer and an acceptor-donor copolymer. The blends were one phase for NECMM contents greater than 35 mol%. At lower donor contents, two phases with different amounts of CT complexation were shown to exist. CT interactions result in restricted mobility and reduced free volume and interatomic distances in the bulk polymer blends
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