Synthesis and characterization of a series of alternating copolymers (oligomers) containing organo-.lambda.5-phosphazene backbone moieties

Synthesis and Intramolecular Charge-Transfer Interactions of a Donor–Acceptor Type Polymer Containing Ferrocene and TCNAQ Moieties

“…The above observations have led us to conclude that the chemical structure of PFPA-Si is very stable, and the ICT interactions illustrated below must have originated intrinsically from macromolecular chains, not from extrinsic sources or the change of molecular structure during experiments. It is worth mentioning at this juncture that some previous research groups attempted to synthesize, via the Staudinger reaction, polymers having phosphoranimine bonds by reacting 1,4-diazidobenzene with bis(diphenylphosphino)alkyl or -aryl compounds, but they only obtained either insoluble solids or oligomers.…”

Electron-Donating Properties of p-Phenylene Phosphine Imides: An Electrochemical and Spectroscopic Investigation

“…We extended our investigation of the electronic properties of phosphine imides and the electronic nature of the PN bond via incorporation into potentially conjugated polymers. Poly( p -phenylene phosphine imide)s were first prepared in 1961 as red-orange solids ( 2a , Scheme ). , The synthesis and investigation of the poly( p -phenylene phosphine imide) 2a was limited by low yields of the monomer bis(diphenylphosphino)benzene ( 3a , 19%) and poor solubility of the polymer. Newly developed palladium-catalyzed carbon−phosphorus bond forming reactions provide a high yield synthesis of 1,4-bis(diphenylphosphino)benzenes.…”