Synthesis and characterization of a series of monodisperse, 1,3,5-phenylene-based hydrocarbon dendrimers including C276H186 and their fluorinated analogs

Synthesis and Characterization of Luminescent Polyfluorenes Incorporating Side-Chain-Tethered Polyhedral Oligomeric Silsesquioxane Units

“…2,7-Dibromo-9,9′-dioctylfluorenone (5), 21 2,7-bis-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)fluorene (6), 22 and the chlorobenzylcyclopentyl-POSS 23 were synthesized according to literature procedures. THF was distilled under nitrogen from sodium benzophenone ketyl; other solvents were dried using standard procedures.…”

“…19b,20 (2) The introduction of the 4-aminophenyl spacer reduces the steric hindrance imposed by POSS. 21 The insertion of a rigid phenylene spacer between the POSS side chain and the polymer backbone may lead to a shielding effect on the polyfluorene main chain, while leaving the reaction sites of the macromonomer accessible for the palladium-catalyzed polymerization reaction. (3) Through this copolymerization approach, the amount of POSS incorporated into the polyfluorene may be tuned by controlling the amount of POSS) dibromide monomer used in the polymerization.…”

Novel oligomers based on fluorene and 2,4‐difluorobenzene: Correlation between the structures and optical properties

“…Upon the evaporation of the solvent, the residue was purified with column chromatography on silica gel with petroleum ether and ethyl acetate as an eluent in turn to give 2F (0.887 g, 0.68 mmol) and F0 (0.229 g, 0.17 mmol) in a yield of 20%. 25 …”

Synthesis of Highly Functionalized Fluorinated Porphyrins

“…In the field of material science they have been used as electron transport materials for organic lightemitting diodes [5], materials for non-linear optic [6] and, in the field of biomedicinal chemistry, as drug delivery systems [7]. Known fluorinated highly branched structures reported previously contain core such as aryls [8], alkylsilanes [9], aminoalkylmethanes [2], azacrowns [10], thiophosphates [11], fluorophenyls [12], cations of transition metals [13], etc.…”