Asymmetric heterogeneous carbene transfer catalyzed by optically active ruthenium spirobifluorenylporphyrin polymers

Anodic oxidation and physicochemical properties of various porphyrin-fluorenes or -spirobifluorenes: Synthesis of new polymers for heterogeneous catalytic reactions

“…On the other hand, it is difficult to obtain thick deposits from monomers with only one or two SBF units. For the compounds with only one unit, copolymerization was also performed with a small amount of SBF in order to improve the polymerization [60].…”

“…The 2-fluorenecarboxaldehyde is commercially available (Aldrich). The syntheses have been previously described in [55] for 1 and 1-RuCO, [56] for 2, 2-MnCl and 2-FeCl, [57] for 2-RuCO, [58] for 3, [59] for 3-MnCl, 5 and 5-MnCl, [60] for 4-RuCO, 6-RuCO. 2-RhI was prepared following a method previously described [64].…”

“…In order to evaluate the heterogeneous catalytic activities of these polymers, the number and the nature of the aromatic units linked to the porphyrin ring and the influence of the metal cation are varied. As an extension of our previous work [55][56][57][58][59][60][61], the aim of this paper is to discuss the anodic behaviour of the various monomers (see Scheme 1) and to study the electro-and physico-chemical properties of their derived polymers.…”

Structure–property relationship of 4-substituted-spirobifluorenes as hosts for phosphorescent organic light emitting diodes: an overview

“…6,7 From a more fundamental point of view, the orthogonal configuration induced by the spiro carbon also allows to design shape persistent molecules with specific arrangements, which in turn has peculiar electronic consequences. 3,4,[8][9][10][11][12][13][14][15] In addition, the application field of the SBF scaffold is not only restricted to electronics and SBF has also found many other appealing applications as chiral ligand, [16][17][18][19] electropolymerizable building block, [20][21][22][23][24][25][26] homogeneous 27 and heterogeneous 23-25, 28, 29 catalysts or as building unit in coordination polymers, [30][31][32] clearly showing the versatility of this fragment. Sixteen positions of substitutions are available on the SBF backbone, eight on each fluorene unit (figure 1).…”

Synthesis and Properties of Annulated 2-(Azaar-2-yl)- and 2,2'-Di(azaar-2-yl)-9,9'-spirobifluorenes

“…However, interest in 9,9'-spirobifluorenes, especially 9,9'-spirobifluorenebased oligomers, as well as polymers has recently switched to applications in molecular electronic devices for light emitting devices [11][12][13][14][15][16], hybrid porous solid [17] and catalysis [18].…”