Poly( <i>p</i> ‐phenylene phosphaborene): A Modified Poly( <i>p</i> ‐phenylene vinylene) with π‐Conjugated B═P Linkages
Abstract
Abstract While the isoelectronic substitution of selected C═C by B═N units in π‐conjugated organic compounds has evolved into a well‐established concept to create novel hybrid materials with modified properties, the use of valence isoelectronic B═P units for such purposes has been hardly explored. Herein, we demonstrate substitutional doping of the famous optoelectronic organic polymer poly( p ‐phenylene vinylene) (PPV) with B═P linking groups for the first time. We report on the successful synthesis of a soluble polymer and a series of monodisperse oligomers of BP‐PPV type. Our structural and photophysical investigations, supported by in‐depth DFT calculations, evidence effective π‐conjugation along their backbone, which is similary pronounced as in their previously reported BN congeners. In addition, the novel BCP compounds show distinct fluorescence emission in solution and emission enhancement upon aggregation (AIEE), occurring from a P‐pyramidalized excited state.
Article Details
Authors (11)
Julian Glock
Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
Jonas Klopf
Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)
Merian Crumbach
Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
Johannes Chorbacher
Julius‐Maximilians‐Universität Würzburg Institute of Inorganic Chemistry Würzburg Germany
Johannes S. Schneider
Alexandra Friedrich
Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)
Emilia Buchsteiner
Rigaku Europe SE Hugenottenallee 167 63263 Neu‐Isenburg Germany
Tobias Bischof
Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius‐Maximilians‐Universität Würzburg Am Hubland 97074 Würzburg Germany
Maik Finze
Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
Bernd Engels
Institute for Physical and Theoretical Chemistry, Julius-Maximilians-Universität Würzburg, Emil-Fischer-Straße 42, Würzburg 97074, Germany
Holger Helten
Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)