Polymer Electron Acceptors Research Articles

Photoelectric properties of a system of polymer with conjugated bonds and electron acceptor compound

1. The presence of a photoeffect in polymers with a system of conjugation was demonstrated in an electrophotographic system, but the value of the photosensitivity is small. 2. The introduction of low-molecular electron acceptor compounds into polymers with a system of conjugation leads to an appreciable increase in the electrophotographic sensitivity. 3. For the donor polymer-acceptor polymer system, an increased photosensitivity is observed, with a simultaneous conservation of film-forming properties and thermal stability. 4. The mechanism of the chemical sensitization of the photoconductivity was studied in a heterophase system of conjugated polymer-electron acceptor compound. In such a system the process consists of sensitization of the organic semiconductor by electron acceptor compounds, adsorbed on its surface with polymer molecules.

Polymerization initiated by an electron donor‐acceptor complex. Part III. Polymerization of methyl methacrylate initiated in the systems containing polymer electron donor, acceptor, and carbon tetrachloride

AbstractThe polymerization of methyl methacrylate can be easily initiated in systems containing poly‐2‐vinylpyridine (polymer electron donor), liquid sulfur dioxide (acceptor), and carbon tetrachloride. The various types of polymer electron donors and acceptors which range widely in their electron affinity were also examined. The addition of DPPH causes the retardation; a decrease in the poly‐2‐vinylpyridine concentration or an increase in the monomer concentration leads to a higher molecular weight of poly‐MMA. The values of kp/√kt obtained under the various polymerization conditions are satisfactorily consistent with the literature values, suggesting that the polymerization proceeds through free radical intermediates.