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Neutral and Cationic Cyclopentadienyliron Macromolecules Containing Arylazo Chromophores

“…These materials were found to be excellent candidates as electrocatalysts, modified electrodes, chemical sensors and photoactive molecular devices 3–11. The design of polymers containing cationic cyclopentadienyliron moieties has been a focus of our research for many years due to the enhanced solubilities that these materials possess compared with their organic analogues, as well as the potential applications of these cationic iron‐containing polymers as electrocatalysts and polyelectrolytes 12,13…”

“…[3][4][5][6][7][8][9][10][11] The design of polymers containing cationic cyclopentadienyliron moieties has been a focus of our research for many years due to the enhanced solubilities that these materials possess compared with their organic analogues, as well as the potential applications of these cationic iron-containing polymers as electrocatalysts and polyelectrolytes. [12,13] Macromolecules incorporating azobenzene moieties have been widely investigated due to their interesting cistrans photoisomerization behavior, which make these materials suitable for optical applications such as electrooptic modulators, photorefractive switches, reversible optical storage systems, and nanoscale applications. [14][15][16][17][18][19][20][21] Manners and co-workers have prepared liquid crystalline poly(ferrocenylsilanes) containing azo dyes in their side chains.…”

Cationic organoiron polyelectrolyte three‐arm stars

“…The viscosities of ether star‐shaped molecules 3 , 23 , and 36 showed a polyelectrolyte effect at low concentrations. Figure 2 shows the polyelectrolyte effect of star‐shaped molecule 23 , which was expected because of the presence of cationic cyclopentadienyl iron moieties 65. This effect has also been shown for linear polymers containing cationic cyclopentadienyl iron 65.…”

“…Figure 2 shows the polyelectrolyte effect of star‐shaped molecule 23 , which was expected because of the presence of cationic cyclopentadienyl iron moieties 65. This effect has also been shown for linear polymers containing cationic cyclopentadienyl iron 65. The inherent viscosity extrapolated to a concentration of 0.5 dL/g from the equation of the linear portion of the curve of 3 was found to be 0.089 dL/g, whereas the inherent viscosity of 23 was 0.17 dL/g, and that of 36 was 0.20 dL/g.…”

Sandwich Complex‐Containing Macromolecules: Property Tunability Through Versatile Synthesis

“…In the cationic η 6 ‐aryl‐ η 5 ‐cyclopentadienyliron(II) sandwich complex, the electron‐withdrawing effect of the CpFe + moiety on the arene ring renders the latter susceptible to nucleophilic addition and substitution reactions. These reactions allow access to η 6 ‐aryl‐ η 5 ‐cyclopentadienyliron(II)‐containing polyethers, polythioethers, and polyamines under mild reaction conditions . Recently, Abd‐El‐Aziz and co‐workers reported a polyether that featured two cationic η 6 ‐aryl‐ η 5 ‐cyclopentadienyliron(II) moieties and a pendant 2‐(3‐thienyl)ethylpropanoate or 2,3‐dihydrothieno[3,4‐b][1,4]dioxin‐2‐ylmethyl‐propanoate per monomer unit .…”