Is the iron center important? Comparison of the electrochemistry between poly-phen-NH2 and poly[Fe(phen-NH2)32+] modified electrodes

Chuang, Wan Ting; Wang, Ching Hao; Wang, Chong Mou

doi:10.1016/s0022-0728(02)00713-1

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…Similar to many other aromatic amines, o-DAAQ and p-DAAQ can form polymers as they are subjected to anodic oxidization [21,22]. Electrochemical quartz crystal microbalance analysis (EQCM) indicates this potential.…”

Section: Resultsmentioning

confidence: 99%

Anthraquinone-modified electrodes, preparations and characterizations

Yeh

Wang

2006

Journal of Electroanalytical Chemistry

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Section: Resultsmentioning

confidence: 99%

Anthraquinone-modified electrodes, preparations and characterizations

Yeh

Wang

2006

Journal of Electroanalytical Chemistry

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“…Its RW remains above 99.9 and 83.2% after 1 and 5 h of exposure to the Fenton reagent at 80 °C, respectively (Figure ). We showed that this is mainly due to formation of the [Fe(IPh) 3 ] 2+ complexes, which could serve as not only the crosslinked reinforce points but also catalyzed active sites to prevent trace H 2 O 2 from undergoing homolysis cleavage and producing highly oxidative • OH radicals. − …”

Section: Resultsmentioning

confidence: 95%

Sulfonated Poly(aryl sulfone)s Containing Ferrous and Ferric Ion Scavenger 1H-Imidazo[4,5-F][1,10]-phenanthroline Groups for Highly Durable Proton Exchange Membranes

2023

ACS Appl. Polym. Mater.

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Proton exchange membranes prepared from poly(aryl sulfone)s still need to overcome the drawbacks of chemical stability in acidic environments and low electrical conductivity due to water loss at high temperatures. Herein, we synthesized densely sulfonated poly(aryl sulfone) proton exchange membranes containing a 1H-imidazo[4,5-F][1,10]-phenanthroline moiety on the side chain with a metal ion coordination function. The coordination of 1H-imidazo[4,5-F][1,10]-phenanthroline groups to metal ions can effectively prevent the formation of •OH radicals from homolytic cleavage of H2O2 catalyzed by metal ions. Since the conditions for the continuous formation of •OH radicals are fundamentally eliminated, the antioxidant stability of the membrane material is greatly improved. Mesoscale microscopic simulations showed that 1H-imidazo[4,5-F][1,10]-phenanthroline has the effect of inducing phase separation, endowing the proton exchange membrane with a larger hydrophilic structural domain and possibly constructing a better connected channel for proton transport. Notably, these membranes can efficiently capture the Fe2+ and Fe3+ ions to form stable [Fe(phen)3]2+ and [Fe(phen)3]3+ interconnection points, respectively, which could not only enforce the water retention and the mechanical properties of the membranes but also serve as a catalyzed point to prevent H2O2 from undergoing homolytic cleavage and forming •OH radicals.

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“…In the CV of complex 1 [ Fig. 3(a)], the cathodic peak at 946 mV is ascribed to the oxidation process of the amino group of the L À anion, and others may be tentatively attributed to the phenanthroline ligand [22]. In the CV of 2 [ Fig.…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

Syntheses, crystal structures and characterization of divalent transition metal sulfonate complexes with O-phenanthroline

Yang

Zhang

et al. 2003

Journal of Coordination Chemistry

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Two new complexes, [Zn(phen) 2 (H 2 O) 2 ]2L Á H 2 O (1) and [Cu(phen)(L)(H 2 O) 2 ]L Á 3H 2 O (2), where HL ¼ 4-aminobenzenesulfonic acid and phen ¼ o-phenanthroline, have been synthesized and their crystal structures determined by X-ray diffraction. In the complexes the Cu(II) and Zn(II) atoms revealed two different coordination environments. Complex 1 consists of a cation [Zn(phen) 2 (H 2 O) 2 ] 2þ , in which Zn(II) is sixcoordinated by four nitrogen atoms from two o-phenanthroline molecules and by two water molecules. Complex 2 has two crystallographically unique Cu(II) ions, where Cu(II) ion is five-coordinate with two nitrogen atoms of o-phenanthroline, two water molecules and one sulfonate oxygen atom. The electrochemical behavior and FT-IR of the two compounds have also been studied in detail.

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Is the iron center important? Comparison of the electrochemistry between poly-phen-NH2 and poly[Fe(phen-NH2)32+] modified electrodes

Cited by 7 publications

References 12 publications

Anthraquinone-modified electrodes, preparations and characterizations

Anthraquinone-modified electrodes, preparations and characterizations

Sulfonated Poly(aryl sulfone)s Containing Ferrous and Ferric Ion Scavenger 1H-Imidazo[4,5-F][1,10]-phenanthroline Groups for Highly Durable Proton Exchange Membranes

Syntheses, crystal structures and characterization of divalent transition metal sulfonate complexes with O-phenanthroline

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