Fabrication of a Novel Glucose Biosensor Based on a Highly Electroactive Polystyrene/Polyaniline/Au Nanocomposite

Liu, Yuge; Feng, Xiang; Shen, Jianmin; Zhu, Jun‐Jie; Hou, Wenhua

doi:10.1021/jp801938w

Cited by 124 publications

(72 citation statements)

References 44 publications

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“…PANI 与 AuNP 比较常见的复合形式是核壳结构的纳米复合物, 例如以聚苯乙烯(PS)为核, PANI 和 AuNP 为壳的 PS/PANI/AuNP 纳米复合物 [80] ; 或者以 AuNP 为核, PANI 为壳的 AuNP/PANI 纳米复合物 [81] ; 或者是 PANI/AuNP 中空微球纳米复合物 [82] 等 . 这些 PANI/AuNP 纳米复合物, 由于 AuNP 的引入电导率明显提高, 促进了 PANI 的电荷转移过程, 其修饰电极均表现出在中性环境下的高电化学活性.…”

Section: 金纳米粒子复合unclassified

Electroactivity of Polyaniline in High pH Solutions

Ye¹,

Lv²,

Hu³

et al. 2013

Acta Chim. Sinica

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Generally, the redox activity of polyaniline (PANI) can only be retained in acidic media at pH＜4, because the occurrence of deprotonation of the nitrogen atoms in the PANI backbone at high pH values may result in the loss of conductivity and electroactivity in neutral or alkaline solutions. This high acidity requirement greatly limits its potential applications like biosensor, marine antifouling and anticorrosion, where neutral or alkaline environments must be faced. Much effort has been exerted in the development of approaches to overcome this issue. In summary, two principal strategies have been proposed to shift the electroactivity of PANI to a high pH environment. One is based on a mechanism of protonic acid doping, the other is based on a charge transfer process. The former is to introduce acidic groups into the PANI chains or PANI systems to hinder the deprotonation of its conducting form and thus to preserve its electroactivity at higher pH values. The main approaches to introduction of acidic groups include the sulfonation of the emeraldine base of PANI, the homopolymerization of aniline derivatives with acidic ionogenic groups or the copolymerization of aniline and aniline derivatives, and the formation of PANI complexes by doping with macromolecular acids. The latter is to use a hybrid film fabricated by incorporating conductive nanomaterials into a PANI matrix, which can improve the charge transfer rate across the PANI matrix and facilitate its redox processes. The development of PANI nanocomposites prepared by doping with carbon nanotubes, graphenes and Au nanoparticles, etc., falls into this category. This review article provides an overview of various approaches to preserve the electroactivity of PANI in high pH solutions on the basis of the two main strategies. Special emphasis is placed on the synthetic methods and electrochemical features for the self-doped, polymer acid-doped and CNT-doped PANIs, including their underlying mechanisms for achieving good electroactivity. The main challenges and future research directions in this field are also discussed.

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Section: 金纳米粒子复合unclassified

Electroactivity of Polyaniline in High pH Solutions

Ye¹,

Lv²,

Hu³

et al. 2013

Acta Chim. Sinica

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“…( Yang, Cao, & Tan, 2014) To solve the problem, many different approaches have been attempted, and a significant attempt to overcome these drawbacks is that using sulfonated polystyrene (SPS) microspheres as substrates to prepare SPS/PANI composites. ( Liu et al, 2008) Using SPS microspheres as substrates can significantly improve the processability of PANI as well as reduce aggregation of PANI because SPS is similar to amphiphilic polymer. ( Dai et al, 2011) In addition, the incorporation of silver (Ag) nanoparticles in PANI can obviously promote the anticorrosive properties of PANI because Ag nanopaiticles exhibit excellent environmental stability and anticorrosive properties.…”

Section: Introductionmentioning

confidence: 99%

Green Preparation of Sulfonated Polystyrene/Polyaniline/Silver Composites with Enhanced Anticorrosive Properties

Liao¹

2018

IJC

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Sulfonated polystyrene/polyaniline/silver (SPS/PANI/Ag) composites with enhanced anticorrosive properties have been successfully prepared by using SPS microspheres as substrates and utilizing polyvinylpyrrolidone (PVP) as reducing agent and stabilizing agent. Our method is an environmentally friendly method because of the absence of any toxic reagents in the whole process. Fourier transform infrared Spectrum (FTIR), field emission scanning electron microscopy (FESEM), and energy disperse spectroscopy (EDX) results confirmed the formation of pure PANI, SPS/PANI composites, and SPS/PANI/Ag composites. Powder X-ray diffraction (XRD) patterns indicate that the obtained Ag nanoparticles are crystalline. The anticorrosive studies indicate that both SPS/PANI composites and SPS/PANI/Ag composites have enhanced anticorrosive properties in comparison to pure PANI in various corrosive environments.

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“…12 Tian et al have prepared polyaniline-gold nanoparticles multilayer lms by layer by layer method and showed that sensor can be used with very good electroactivity in a neutral pH environment. 13 Feng et al also have described the Au-PANI matrix to construct sensor and has showed the sensor is having high catalytic activity and enhanced detection sensitivity.…”

Section: Introductionmentioning

confidence: 99%