6533b82efe1ef96bd12925cd

RESEARCH PRODUCT

Intercorrelation between Structural Ordering and Emission Properties in Photoconducting Polymers

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We investigated the structural properties of anthracene containing poly(p-phenylene−ethynylene)-alt-poly(p-phenylene−vinylene) polymers with general constitutional unit: (−Ph−C≡C−Anthr−C≡C−Ph−CH═CH−Ph−CH═CH−)n by means of wide-angle X-ray scattering and fluorescence spectroscopy. Interchain interactions were systematically modified by decorating the conjugated polymer backbone with linear or branched or combinations of linear and branched alkoxy side chains. Special emphasis is taken on an evaluation method for fiber scattering spectra that allows the deduction of important structural details of polymer materials with limited degree of order. These include positional correlations along the backbones, interlayer and π−π stacking distances between different chains as well as a quantification of the degree of order in terms of number of lattice planes per domain. The polymers with all-linear side chains attached close to the anthracenylene−ethynylene unit (AnE) show a layered structure. In contrast attachmen...