Summary.
In this paper we report on the synthesis and characterization of a variety of poly-phenylenevinylene (PPV) derivatives containing para- and meta-linkages in the backbones. By the m-linkages the conjugation lengths of the oligo-m,p-phenylenevinylenes were limited, thus blueshifting the UV/Vis absorption and also the photoluminescence (PL) spectra. Alkoxy substituted oligo-m,p-phenylenevinylenes exhibited absorption and emission spectra at higher wavelengths than oligomers without oxygen directly attached to the backbone. Replacing p-phenylene by 4,4′-biphenylene moieties also led to a hypsochromic shift in the optical spectra. We chose the Heck coupling reaction to synthesize substituted oligomers consisting of alternating p-phenylenevinylene and m-phenylenevinylene units. They were characterized by 1H NMR, 13C NMR, FT IR, UV/VIS, and GPC analysis.
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Received May 30, 2000. Accepted (revised) December 19, 2000
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Schlick, H., Stelzer, F. & Leising, G. Chemical and Optical Propertiesof New Highly Luminescent Alternating Oligo-m,p-phenylenevinylenes. Monatshefte fuer Chemie 132, 441–452 (2001). https://doi.org/10.1007/s007060170107
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DOI: https://doi.org/10.1007/s007060170107