Oligo phenylenevinylene s

Keywords silanes, oligo(phenylenevinylene)s, UV-Vis spectroscopy, fluorescence... 

Monodisperse oligo(phenylenevinylene)s are assembled to three-dimensional scaffolds in convergent three- or fourfold Homer reactions of a silane core and stilbenoid aldehydes in moderate to good yields. The central silane is sensitive toward nucleophilic attack. Tetrahedral compounds with short side chains form stable amorphous films but trigonal-pyramidal shaped assemblies tend to recrystallize. The connection of the chromophores to a central silicon atom results in a stabilization of the excited states an intense blue-green fluorescence is emitted from solution as well as from transparent films. 

Synthesis, Luminescence, and Condensation of Oligo(phenylenevinylene)s with Alkoxysilane End Groups... 

Detert, H., and E. Sugiono. 2000. Soluble oligo(phenylenevinylene)s with electron withdrawing substituents for the use in light emitting diodes. Synth Met 115 (1-3) 89-92. 

Detert, H., D. Scholhneyer, and E. Sugiono. 2001. Synthesis, structure and solvatochromism of the emission of cyano-substituted oligo(phenylenevinylene)s. Ear J Org Chem (15) 2927-2938. 

Figure 1.17 General procedures for the preparation of thiol end-capped stilbenes and oligo(phenylenevinylene)s. (Reproduced with permission from Ref [93].)...

As a further application of this method, it was used along with a bromination/Suzuki-Miyaura sequence to give asymmetric oligo(phenylenevinylene)s. 

Iwadate N, Suginome M. Synthesis of B-protected p-styrylboronic acids via iridium-catalyzed hydroboration of alkynes with 1,8-naphthalenediaminatoborane leading to iterative synthesis of oligo(phenylenevinylene)s. Org Lett. 2009 11 1899-1902. 

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