Polymere charge‐transfer‐komplexe auf der basis von polyvinylalkoholacetalen, 2

Poly[2‐(1‐naphthyl)‐1,3‐dioxan‐4,6‐diylmethylene] (3), poly[2‐(2‐naphthyl)‐1,3‐dioxan‐4,6‐diylmethylene] (5), 1‐naphthalenecarbaldehydetrimethyleneacetal (7) and 2‐naphthalenecarbaldehydetrimethyleneacetal (8) were synthesized and characterized by UV‐ and fluorescencespectroscopy. In addition triplet‐triplet absorption maxima and triplet‐lifetimes were determined by flash technique. The naphthalene derivates were found to act as donors in the charge‐transfer complex formation with such electron acceptors as tetracyanoethylene, 2,5‐cyclohexadien‐1,4‐diylidenedimalonodinitrile and 2,4,5,7‐tetranitro‐9‐fluorenone. The equilibrium constants of the charge‐transfer complexes were determined spectrophotometrically by the methods of Benesi‐Hildebrand, Benesi‐Hildebrand‐Scott and Foster‐Hammick‐Wardley.