Spectroscopy study of 5-amino-1,10-phenanthroline

Ramírez-Silva, Ma. Teresa; Gómez-Hernández, Martín; Pacheco-Hernández, Ma de Lourdes; Rojas-Hernándéz, Alberto; Galicia, Laura

doi:10.1016/s1386-1425(03)00301-9

Cited by 20 publications

(6 citation statements)

References 24 publications

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“…1A and B). This possibility is contrary to the studies performed with 5AP on different substrates in aqueous media by potentiostatic and potentiodynamic methods in which polymerization has been mentioned 12, 24–26. The oxidation peaks on GC electrode surface were observed at approximately 2.0 V for both PDs in nonaqueous media during the first cycle.…”

Section: Resultscontrasting

confidence: 61%

Surface modification and characterization of phenanthroline nanofilms on carbon substrate

Öztekin¹,

Yazicigil²,

Solak³

et al. 2011

Surface & Interface Analysis

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Modification of glassy carbon (GC) surfaces with phenanthroline derivatives (PDs) such as 5-amino-1,10-phenanthroline (5AP) and 5,6-diamino-1,10-phenanthroline (56DAP) is described in this study. Surface modification experiments were performed by cyclic voltammetry (CV) scanning from +1.2 to +2.7 V at scan rate of 100 mV/s applying 30 potential scans in acetonitrile (CH 3 CN) containing 1 mM PDs and 100 mM tetrabutylammoniumtetrafluoroborate (TBATFB). The presence of PDs on GC electrode was confirmed using CV, electrochemical impedance spectroscopy (EIS), contact angle measurements and ellipsometry and comparing with the results of bare GC electrode. A mechanism was proposed for the electrochemical modification of the GC electrode surface with PDs. The structure of the 5AP and 56DAP films was also discussed in the light of electrochemical and spectroscopic data. The complex-forming ability of the modified surfaces against metal cations was investigated by square-wave voltammetry (SWV). It was shown that surfaces having 1,10-phenanthroline ligands with different functional groups were quite useful for the determination of transition metal ions.

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Section: Resultscontrasting

confidence: 61%

Surface modification and characterization of phenanthroline nanofilms on carbon substrate

Öztekin¹,

Yazicigil²,

Solak³

et al. 2011

Surface & Interface Analysis

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“…There are several experimental techniques that have been proven to be successful to measure p K a s. Among these, the ones most frequently used to that purpose are potentiometry, spectrophotometry, , capillary electrophoresis (CE), and nuclear magnetic resonance (NMR) . Their relative efficiency for determining p K a s depends on the chemical nature of the compounds studied, their solubility, and also the stability of the species involved under the experimental conditions, although in the case of chemical species containing a catechol group, a low stability has been observed at basic pH, as in the case of dopamine .…”

Section: Introductionmentioning

confidence: 99%

Deprotonation Mechanism and Acidity Constants in Aqueous Solution of Flavonols: a Combined Experimental and Theoretical Study

et al. 2013

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Four flavonols, namely quercetin, morin, kaempferol, and myricetin, were studied using spectrophotometry (UV-vis) in aqueous solution. The study was performed varying the pH to analyze the stability of these compounds, and to estimate their acidity constants. In addition, the deprotonation mechanisms were studied using computational chemistry within the density functional theory framework. The calculations were performed in aqueous solution using the SMD continuum model, and the results are reported as deprotonation energies. Our results show that both quercetin and myricetin are highly unstable at basic pH. Kaempferol, on the other hand, is much more stable, and morin is the only one among the studied compounds that was not affected by pH. In spite of this inconvenience, their acidity constants were estimated through analysis of their decomposition kinetics, correcting the spectra accordingly, and obtaining a correlation of values between the experimentally observed pKa and the calculated ΔG of successive deprotonations.

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“…It also shows that the current response in Poly Fe (III)-5-Aphen is greater than the current response of Poly 5-Aphen, indicating that there is indeed the addition of the metal ion to the polymer matrix. The spectroscopic properties of Poly Fe(III)-5-Aphen were determined and compared with previous results reported (7,8,9) for Poly 5-Aphen.…”

Section: Resultsmentioning

confidence: 89%

Characterization of the Film of Fe (III)-5-Amino 1.10 Phenanthroline Seposited on a Substrate of ITO

Camargo

Galicia

2013

ECS Trans.

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In this paper we present the electrochemical characterization of 5-Amino 1,10 Phenanthroline (5-Aphen) and its complex with Fe (III); polymer films, supported on ITO. The films of 5-Aphen and Fe (III)-5-Aphen were prepared using the technique of cyclic voltammetry (CV) on a substrate of ITO. These were characterized using spectroscopic and electrochemical techniques. Spectroscopic techniques used: Fourier transform infrared (FT-IR), X-ray diffraction (EDX) were are able to confirm the incorporation of the metal ion to the polymer matrix.

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Spectroscopy study of 5-amino-1,10-phenanthroline

Cited by 20 publications

References 24 publications

Surface modification and characterization of phenanthroline nanofilms on carbon substrate

Surface modification and characterization of phenanthroline nanofilms on carbon substrate

Deprotonation Mechanism and Acidity Constants in Aqueous Solution of Flavonols: a Combined Experimental and Theoretical Study

Characterization of the Film of Fe (III)-5-Amino 1.10 Phenanthroline Seposited on a Substrate of ITO

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