Electrochemical preparation and characterization in non-aqueous electrolyte of polyaniline electrochemically prepared from an anilinium salt

Naudin, Eric; Gouérec, P.; Bélanger, Daniel

doi:10.1016/s0022-0728(98)00234-4

Cited by 19 publications

(13 citation statements)

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“…Since PANI films do not retain their conductive character in non-acidic media [13] (i.e. the neutral environments required for most proteins to function optimally), the electropolymerisation process has to be carried out in the presence of a dopant.…”

Section: Introductionmentioning

confidence: 99%

Optimisation and characterisation of biosensors based on polyaniline

Grennan

Killard

Hanson

et al. 2006

Talanta

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With lower limits of detection and increased stability constantly being demanded of biosensor devices, characterisation of the constituent layers that make up the sensor has become unavoidable, since this is inextricably linked with its performance. This work describe the optimisation and characterisation of two aspects of sensor performance: a conductive polymer layer (polyaniline) and the immobilised protein layer. The influence of the thickness of polyaniline films deposited electrochemically onto screen-printed electrode surfaces is described in this work in terms of its influence on a variety of amperometric sensor performance characteristics: time to reach steady state, charging current, catalytic current, background current and signal/background ratios. The influence of polymer film thickness on the conductivity and morphology of finished films is also presented. An electrostatic method of protein immobilisation is used in this work and scanning electron microscopy in conjunction with gold-labelled antibodies and back-scattered electron detection has enabled the direct visualisation of individual groups of proteins on the sensor surface. Such information can provide an insight into the performance of sensors under influence of increasing protein concentrations.

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Section: Introductionmentioning

confidence: 99%

Optimisation and characterisation of biosensors based on polyaniline

Grennan

Killard

Hanson

et al. 2006

Talanta

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“…Etheryl and amine protons (noncomplexed free aniline units) are displayed at δ = 1.57 and 3.56 ppm, respectively. The protons of ammonium are at 7.85 (with DBSA − counter ion) and 7.34 ppm (with Cl − counter ion),18 respectively. It seems that the integrated area of the characteristic peak of DBSA − counter ions is larger than that of Cl − ones, which indicate that x may be larger than y ‐value.…”

Section: Resultsmentioning

confidence: 99%

Effect of aniline‐formaldehyde resin on the reduced conjugation length of doped polyaniline: Thermal studies

Huang

Kuo

et al. 2006

J of Applied Polymer Sci

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A linear aniline‐formaldehyde resin (AF) complexed with different acids was successfully synthesized with the traditional way of polymerizing a novolac‐type phenolic resin. When the AF(DBSA)1.0 (AF complexed with only HDBSA (n‐dodecyl benzene sulfonic acid)) was blended with PANI(DBSA)0.5 (polyaniline doped only by HDBSA, the Tgs (glass transition temperatures) of the polyblends decreased with PANI(DBSA)0.5, indicating the presence of the compatibility that can alter the doping condition of PANI(DBSA)0.5 by changing the conjugation length. In the polyblend system, it was also confirmed when the polyblend of 50/50 showed a higher residue weight than the rest of polyblends after being heated up to 450°C. The λmax of UV–vis spectra of PANI (DBSA)0.5 demonstrates a red shifts indicating the secondary doping effect (increasing conjugation length) was recovered when PANI(DBSA)0.5 was mixed with less than 50% of AF(DBSA)0.5 (HCl)0.5. Similar phenomenon of red shift was found for the blended samples of PANI(DBSA)0.5/AF(DBSA)1.0 at high temperatures. IR spectra revealed an alkyl affinity interaction is present between PANI(DBSA)0.5 and AF(DBSA)1.0 at room temperature and a strong and free localized polaron band appeared at high temperatures due to the recovery of secondary doping. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2120–2128, 2007

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“…Neutral aqueous electrolyte solvent system. Previous work by Naudin et al 15 has looked at depositing polyaniline from anilinium in neutral solutions. This study concluded that there was a limitation as to how thick a layer could be deposited which results from a low efficiency of electropolymerisation.…”

Section: Deposition Of Polyaniline Using Anilinium Nitratementioning

confidence: 99%

“…This study concluded that there was a limitation as to how thick a layer could be deposited which results from a low efficiency of electropolymerisation. 15 The polymer film was smooth and not porous, which is not a desirable property for a supercapacitor device. 1,42 Other work has been carried out by Zhang et al 43 investigating the oxidation of anilinium in acidified aqueous media which allows for easier polymerisation.…”

Section: Deposition Of Polyaniline Using Anilinium Nitratementioning

confidence: 99%

“…13,14 In addition to this, growth in a high solution pH (either weakly acidic or basic conditions) will generally lead to a poorly conducting polymer. 14,15 Another approach was to use a Brønsted acidic ionic liquid (BAIL). [16][17][18] The most successful BAIL of 1-ethyl imidazolium trifluoroacetate was reported by Liu et al 16 which resulted in reasonably thick layers being formed.…”

Section: Introductionmentioning

confidence: 99%

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