Electrochemical Response of Poly-(3-Methyl-Thiophene) to Various Anions in Aqueous Solutions

Hägen, G.; Thoresen, A. H.; Sunde, Svein; Hesjevik, Sven Morten; Ødegård, R.

doi:10.1080/00268949008037233

Cited by 11 publications

(12 citation statements)

References 2 publications

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“…Unmodified CPs can respond readily to changes in their local environment. Unmodified CPs have been used to sense a great variety of analytes such as organic vapors, − oxygen, nitrogen oxide gases, amines, hydrazines, pH, humidity, various ions, and cytochrome c . The reader interested in unmodified CPs as sensors should refer to recent reviews , and books .…”

Section: Unmodified Cps As Sensorsmentioning

confidence: 99%

“…Unmodified CPs can respond readily to changes in their local environment. Unmodified CPs have been used to sense a great variety of analytes such as organic vapors, [342][343][344][345] oxygen, 346 nitrogen oxide gases, 347 amines, 348 hydrazines, 349 pH, 350 humidity, 351 various ions, 352 and cytochrome c. 353 The reader interested in unmodified CPs as sensors should refer to recent reviews 354,355 and books. 356 Unmodified CPs tend to show very little specificity and are not useful as "stand alone" sensors but are very useful for arrays.…”

Section: Unmodified Cps As Sensorsmentioning

confidence: 99%

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Conjugated Polymer-Based Chemical Sensors

2000

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Section: Unmodified Cps As Sensorsmentioning

confidence: 99%

Section: Unmodified Cps As Sensorsmentioning

confidence: 99%

Conjugated Polymer-Based Chemical Sensors

2000

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“…Significantly, polythiophenes can be straightforwardly synthesized using anodic electrodeposition techniques. There have been a number of studies conducted on electrochemically prepared polythiophene films for sensing applications − Other than sensors, the high interest in polythiophene material is its potential for various applications such as smart coatings, organic light-emitting diodes, photovoltaics, and electrochromic windows. − …”

Section: Introductionmentioning

confidence: 99%

Electropolymerized Molecularly Imprinted Polymer Films of a Bis-Terthiophene Dendron: Folic Acid Quartz Crystal Microbalance Sensing

Apodaca

Pernites

Ponnapati

et al. 2010

ACS Appl. Mater. Interfaces

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A folic acid sensor was prepared via an electropolymerized molecularly imprinted polymer (E-MIP) film of a bis-terthiophene dendron on a quartz crystal microbalance (QCM). The cyclic voltammetry (CV) electrodeposition of the imprinted polymer film was monitored by electrochemical QCM or E-QCM, enabling in situ monitoring and characterization of E-MIP film formation and the viscoelastic behavior of the film. A key component of the E-MIP process is the use of a bifunctional monomer design to precomplex with the template and function as a cross-linker. The complex was electropolymerized and cross-linked by CV to form a polythiophene matrix. Stable cavities were formed that specifically fit the size and shape of the folic acid template. The same substrate surface was used for folic acid sensing. The predicted geometry of the 1:2 folic acid/terthiophene complex was obtained through semiempirical AM1 quantum calculations. The analytical performance, expressed through the figures of merit, of the sensor in aqueous solutions of the analyte was investigated. A relatively good linearity, R(2) = 0.985, was obtained within the concentration range 0-100 μM folic acid. The detection limit was found to be equal to 15.4 μM (6.8 μg). The relative cross selectivity of the folic acid imprinted polymer against the three molecules follows this trend: pteroic acid (= 50%) > caffeine (= 41%) > theophylline (= 6%). The potential and limitations of the E-MIP method were also discussed.

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“…But they did find a large effect of the dopant anion. In contrast, Sunde and co-workers [11] as well as Zhang and Dong [12] have shown that the voltammograms of PMT in aqueous electrolytes are strongly dependent on the types of anions present in the solution. Some work has been done on the effect of the electrolyte [13], but the effect of ion exchange on the electrochemical properties of PMT in aqueous solutions has not yet been investigated.…”

Section: Introductionmentioning

confidence: 91%

Effect of anion and cation exchange on the electrochemical properties of poly(3-methylthiophene) in aqueous solutions

Refaey¹,

Schwitzgebel²

2000

Designed Monomers and Polymers

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Poly(3-methylthiophene) (PMT) was synthesized in acetonitrile (AN) using BF 4 − , ClO 4 − , and CF 3 SO 3 − as doping anions and Li + and Et 4 N + as cations. The electrochemical characterization of these films was performed in aqueous solution using either the same electrolyte as for synthesis or an electrolyte with different anions or cations. The results are discussed on the basis of the structural and chemical parameters of the anions and their interaction with the polymer. It is shown that the nature of the anion plays a major role in the electrochemical behaviour of the polymer. It was found that the memory effect is associated with the CF 3 SO 3 − anion when used during the synthesis or in the electrochemical investigation.

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Electrochemical Response of Poly-(3-Methyl-Thiophene) to Various Anions in Aqueous Solutions

Cited by 11 publications

References 2 publications

Conjugated Polymer-Based Chemical Sensors

Conjugated Polymer-Based Chemical Sensors

Electropolymerized Molecularly Imprinted Polymer Films of a Bis-Terthiophene Dendron: Folic Acid Quartz Crystal Microbalance Sensing

Effect of anion and cation exchange on the electrochemical properties of poly(3-methylthiophene) in aqueous solutions

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