Influence of pH on poly-(N-methylpyrrole) electrochemically synthesized in aqueous solution: an infrared study

Larraz, Elena; Redondo, M.I.; González-Tejera, M.J.; Raso, M.A.; Tortajada, José Félix Tezanos; Blanca, E. Sánchez de la; García, M.J.

doi:10.1016/s0379-6779(00)00564-6

Cited by 22 publications

(15 citation statements)

References 41 publications

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“…Besides, the peak at 2983 cm −1 is due to CH stretching vibrations of methyl group, the shoulder at 1438 cm −1 may be attributed to out‐of‐plane bending of CCC in the ring and inter rings, the peak at 1321 cm −1 may be due to CC and CN stretching vibrations. The presence of CCN, CCC, and CNC are indicated by the absorption at 1193 cm −1 14. Moreover, the peak at 1082 cm −1 revealed the presence of dopant ion in the structure, which confirms that the polymerization has occurred.…”

Section: Resultsmentioning

confidence: 73%

Synthesis and characterization of poly(thiophen‐3‐yl acetic acid 4‐pyrrol‐1‐yl phenyl ester‐co‐N‐methylpyrrole) and its application in an electrochromic device

Bingöl

Çamurlu

Toppare

2006

J of Applied Polymer Sci

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ABSTRACT:Copolymer of thiophen-3-yl acetic acid 4-pyrrol-1-yl phenyl ester (TAPE) with N-methylpyrrole (NMPy) was synthesized by potentiostatic electrochemical polymerization in acetonitrile-tetrabutylammonium tetrafluoroborate solvent-electrolyte couple. The chemical structures were confirmed via Fourier transform infrared spectroscopy (FTIR), cyclic voltammetry (CV), and UV-vis spectroscopy. Electrochromic and spectroelectrochemical properties of poly(TAPE-co-NMPy) [P(TAPE-co-NMPy)] were investigated. Results showed that the copolymer revealed color change between light yellow and green upon doping and dedoping of the copolymer, with a moderate switching time. Furthermore, as an application, dual-type absorptive/transmissive polymer electrochromic device (ECD) based on poly(TAPE-co-NMPy) and poly(3,4-ethylene dioxythiophene) (PEDOT) have been assembled, where spectroelectrochemistry, switching ability, stability, and optical memory of the ECD were investigated. Results showed that the device exhibited good optical memory and stability with moderate switching time.

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Section: Resultsmentioning

confidence: 73%

Synthesis and characterization of poly(thiophen‐3‐yl acetic acid 4‐pyrrol‐1‐yl phenyl ester‐co‐N‐methylpyrrole) and its application in an electrochromic device

Bingöl

Çamurlu

Toppare

2006

J of Applied Polymer Sci

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“…It does appear that raising or lowering the pH of fabrication improves selectivity against hard divalent anions. There are reports relating differences in poly(N-methylpyrrole) films prepared at differing pH values [13,14]. One report states that some of the polymer was protonated at the α carbon when prepared or conditioned at low pH.…”

Section: Resultsmentioning

confidence: 99%

“…There are differences in the spectra for bands around 1300 cm −1 and 650 cm −1 . These bands have been assigned to the polymer back bone, [13] suggesting small changes in the polymer conformations. There is a marked difference in the spectra obtained on films prepared in this study as compared to this previous report.…”

Section: Discussionmentioning

confidence: 98%

“…The spectra were obtained using a diamond anvil ATR. The report cited above also used FT-IR to compare the films at differing pH values [13]. Those films were prepared at fixed potential of 0.8 V versus a saturated calomel electrode (SCE) resulting in considerably higher current densities than were used in the current study.…”

Section: Discussionmentioning

confidence: 99%

“…It should be possible to prepare improved nitrate ISEs using N-methylpyrrole. Larraz, et al [13] studied the influence of pH on the electro-synthesis of nitrate doped poly(N-methylpyrrole) films. The paper presented spectroscopic evidence that the polymer is protonated at low pH at the carbon alpha to the nitrogen.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nitrate Ion Selective Electrode Based on Ion Imprinted Poly(N-methylpyrrole)

2017

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Abstract:A poly(N-methylpyrrole) based ion selective electrode (ISE) has been prepared by electro-polymerization of N-methylpyrrole using potassium nitrate as the supporting electrolyte. Electrochemical and chemical variables were used to optimize the potentiometric response of the electrodes and to maximize the selectivity for nitrate over potential interferences. The selectivity, longevity and stability of the ion-imprinted polymer give this electrode advantages over traditional nitrate ISEs. The best prototype electrode exhibits a linear potential response to nitrate ion within the concentration range of 5.0 × 10 −6 to 0.1 M nitrate with a near Nernstian slope of −56.3 mV per decade (R 2 = 0.9998) and a strong preference for the nitrate ion over other anions. The selectivity coefficients of the electrode were evaluated by the fixed interference method. The use of N-methylpyrrole has advantages over pyrrole in terms of selectivity and pH insensitivity.

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Monomer concentration effect on electrochemically modified carbon fiber with poly[1‐(4‐methoxyphenyl)‐1H‐pyrrole] as microcapacitor electrode

et al. 2009

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In this study, films of poly[1-(4-methoxyphenyl)-1H-pyrrole][poly(MPPy)] were electrochemically grown on carbon fiber microelectrodes (CFMEs) in 0.05 M of tetraethyl ammonium perchlorate-dichloromethane. The effect of different monomer concentrations (range = 1-10 mM) on electrochemical properties of resulting polymers was characterized by cyclic voltammetry, Fourier transform infrared reflectance-attenuated total reflection spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and electrochemical impedance spectroscopy. All modified CFMEs were found to have capacitance on the basis of Nyquist, Bode-magnitude, Bode-phase, and Admittance plots. An equivalent circuit model of (R(C(R(QR)))(CR)) gave the best fit for all monomer

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Influence of pH on poly-(N-methylpyrrole) electrochemically synthesized in aqueous solution: an infrared study

Cited by 22 publications

References 41 publications

Synthesis and characterization of poly(thiophen‐3‐yl acetic acid 4‐pyrrol‐1‐yl phenyl ester‐co‐N‐methylpyrrole) and its application in an electrochromic device

Synthesis and characterization of poly(thiophen‐3‐yl acetic acid 4‐pyrrol‐1‐yl phenyl ester‐co‐N‐methylpyrrole) and its application in an electrochromic device

Nitrate Ion Selective Electrode Based on Ion Imprinted Poly(N-methylpyrrole)

Monomer concentration effect on electrochemically modified carbon fiber with poly[1‐(4‐methoxyphenyl)‐1H‐pyrrole] as microcapacitor electrode

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