Electrosynthesis and characterisation of poly(safranine T) electroactive polymer films

Pauliukaitė, Rasa; Selskienė, Aušra; Malinauskas, Albertas; Brett, Christopher M.A.

doi:10.1016/j.tsf.2009.01.092

Cited by 30 publications

(9 citation statements)

References 39 publications

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“…A special interest is that of polymers with direct charge transport properties which can therefore serve as redox mediators (Boguslavsky et al, 1995;Hodak, Etchenique, Calvo, Singhal, & Bartlett, 1997;Raj & Chakraborty, 2006). One of these electroactive polymer films is synthesised by the electropolymerisation of safranine T (ST) (Pauliukaite, Selskiene, Malinauskas, & Brett, 2009), which has a large heterocyclic conjugated system and contains an electron donor -NH 2 . Since ST is a phenazine compound, the redox mechanism is probably similar to neutral red (Chen & Gao, 2007;Sun, Ye, Zhang, & Zhou, 1998).…”

Section: Introductionmentioning

confidence: 99%

Determination of caffeine content in tea based on poly(safranine T) electroactive film modified electrode

et al. 2011

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Section: Introductionmentioning

confidence: 99%

Determination of caffeine content in tea based on poly(safranine T) electroactive film modified electrode

et al. 2011

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“…Safranin is an aromatic diamine (Fig. ), which is oxidized with iron(III) chloride to an insoluble oligomer, similarly to other aromatic amines or diamines . The precipitated template is obviously composed of stacked oligosafranins, or possibly even oxidized safranins, that subsequently serve for the deposition of pyrrole oligomers.…”

Section: Other Dyesmentioning

confidence: 99%

Strategies towards the control of one‐dimensional polypyrrole nanomorphology and conductivity

Stejskal

2018

Polymer International

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Conducting polypyrrole nanotubes rank among the most conducting polymer materials and find applications in organic electronics and energy conversion devices. They are produced by the chemical oxidation of pyrrole in globular form, which converts to nanotubes or nanofibres in the presence of suitable templates and is often accompanied by a pronounced conductivity increase. This is illustrated by the anionic dye, methyl orange, where the template formation is based on azo–hydrazone tautomerism associated with hydrogen atom transfer caused by the acidity change. In other words, the soluble salt of the dye converts to an insoluble acid, and its one‐dimensional aggregates serve as a locus for the adsorption of pyrrole oligomers. This is followed by the growth of polypyrrole chains constituting the nanotube wall. Safranin, a cationic dye, produces a template by a completely different mechanism, the oxidative generation of insoluble safranin oligomers that perform with similar results. Other mechanisms of template formation are also proposed and discussed but mainly organic dyes have a significant potential to support the one‐dimensional growth of polypyrrole. The role of surfactants that affect the morphology of templates, and subsequently also of polypyrrole, is demonstrated. © 2018 Society of Chemical Industry

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“…The influence of chloride (Cl -) and nitrate (NO 3 -) ions on the electropolymerisation of AO was also investigated, since the electropolymerisation of some other phenazines such as safranine T [27], neutral red [28] and methylene green [28] was faster in buffer solutions including potassium The polymerisation conditions were optimised in 25 mM PBS in the pH ranges from 5.5 to 8.0 containing various AO monomer concentrations in the range 0.1-1.0 mM. For the polymerisation in 25 mM PBS at pH 5.5, the polymer redox peaks at *?0.2 V and the radical formation peak at *?0.9 V increased with increasing AO concentration (Fig.…”

Section: Electropolymerisation Of Aomentioning

confidence: 99%

Poly(acridine orange)-modified glassy carbon electrodes: electrosynthesis, characterisation and sensor application with uric acid

2014

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Poly(acridine orange) was electropolymerised on glassy carbon electrodes by potential cycling in phosphate buffer solution at pH 5.5, 6.0, 7.0 and 8.0. Electrochemical behaviour of the modified electrodes was studied by cyclic voltammetry in phosphate buffer solution at various pHs and found that the best polymer film formation was obtained at pH 5.5. Quantitative determination of uric acid was achieved by cyclic voltammetry, differential pulse voltammetry (DPV) and fixed-potential amperometry in phosphate buffer solution at pH 5.5. Anodic peak currents were linearly proportional to concentration of uric acid in the range 1-75 lM for cyclic voltammetry, 0.4-75 lM for DPV and 0.04-5.3 lM for amperometry. Detection limits were 3.7 9 10 -1 , 9.7 9 10 -2 and 9.5 9 10 -3 lM for cyclic voltammetry, DPV and amperometry, respectively. The modified electrodes exhibited good sensitivity, wide linear range and good stability. There is no interference from substances commonly present in natural samples.

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Electrosynthesis and characterisation of poly(safranine T) electroactive polymer films

Cited by 30 publications

References 39 publications

Determination of caffeine content in tea based on poly(safranine T) electroactive film modified electrode

Determination of caffeine content in tea based on poly(safranine T) electroactive film modified electrode

Strategies towards the control of one‐dimensional polypyrrole nanomorphology and conductivity

Poly(acridine orange)-modified glassy carbon electrodes: electrosynthesis, characterisation and sensor application with uric acid

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