Current trends in the development of conducting polymers-based biosensors

Zamani, Faezeh Ghorbani; Moulahoum, Hichem; Ak, Metin; Demirkol, Dilek Odaci; Timur, Suna

doi:10.1016/j.trac.2019.05.031

Cited by 131 publications

(31 citation statements)

References 208 publications

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“…Peaks at 1461.4 and 1592.9 cm −1 can be assigned to C=N and C=C stretching vibrations of the quinoid and benzenoid rings of the PANI texture. The presence of DBSA moiety in the PANI backbone was also confirmed by the peak appearing at 1005.8 cm −1 , which was attributed to the stretching vibration due to S=O bond of -SO3H group [55]. Symmetric and asymmetric stretching vibrations due to the C-H bonds in PANI were represented respectively by two peaks at 2840.3 and 2933.3 cm −1 .…”

Section: Ftir Studymentioning

confidence: 72%

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

2020

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Water pollution caused by industrial wastes containing heavy metals and dyes is a major environmental problem. This study reports on the synthesis, characterization, and utilizations of Polyaniline (PANI) and its composites with Fe3O4 for the removal of hexavalent chromium Cr(VI) and divalent nickel Ni(II) ions from water. The adsorption data were fitted in Freudlich, Langmuir, Tempkin, Dubbanin–Ruddishkawich (D–R), and Elovich adsorption isotherms. The Freundlich isotherm fits more closely to the adsorption data with R2 values of 0.9472, 0.9890, and 0.9684 for adsorption of Cr(VI) on Fe3O4, PANI, and PANI/Fe3O4 composites, respectively, while for adsorption of Ni(II) these values were 0.9366, 0.9232, and 0.9307 respectively. The effects of solution pH, initial concentration, contact time, ionic strength, and adsorbent dosage on adsorption behavior were investigated. The adsorption ability of composites was compared with pristine PANI and Fe3O4 particles. Activation energy and other thermodynamic properties such as changes in enthalpy, entropy, and Gibbs free energy indicated spontaneous and exothermic adsorption.

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Section: Ftir Studymentioning

confidence: 72%

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

2020

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“…Conducting polymers are based on π-π conjugated bond structure formed along polymeric chain, therefore, π-electrons are delocalized along these conjugated bonds and, for this reason, CPs are electrically conducting [ 21 , 68 , 117 , 118 ]. In addition, CPs have advantageous electrochemical [ 21 ], optical [ 119 ] and many other physical properties that can be exploited for technological purposes [ 33 , 119 , 120 ].…”

Section: Physicochemical Properties Of Conducting Polymersmentioning

confidence: 99%

Advances in Molecularly Imprinted Polymers Based Affinity Sensors (Review)

2021

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Recent challenges in biomedical diagnostics show that the development of rapid affinity sensors is very important issue. Therefore, in this review we are aiming to outline the most important directions of affinity sensors where polymer-based semiconducting materials are applied. Progress in formation and development of such materials is overviewed and discussed. Some applicability aspects of conducting polymers in the design of affinity sensors are presented. The main attention is focused on bioanalytical application of conducting polymers such as polypyrrole, polyaniline, polythiophene and poly(3,4-ethylenedioxythiophene) ortho-phenylenediamine. In addition, some other polymers and inorganic materials that are suitable for molecular imprinting technology are also overviewed. Polymerization techniques, which are the most suitable for the development of composite structures suitable for affinity sensors are presented. Analytical signal transduction methods applied in affinity sensors based on polymer-based semiconducting materials are discussed. In this review the most attention is focused on the development and application of molecularly imprinted polymer-based structures, which can replace antibodies, receptors, and many others expensive affinity reagents. The applicability of electrochromic polymers in affinity sensor design is envisaged. Sufficient biocompatibility of some conducting polymers enables to apply them as “stealth coatings” in the future implantable affinity-sensors. Some new perspectives and trends in analytical application of polymer-based semiconducting materials are highlighted.

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“…CPs contain delocalized π-electrons within the backbone of the polymeric chain; therefore, these polymers possess advanced electrical conductivity and some other unique properties, such as low ionization potential [ 58 , 72 , 73 ]. Therefore, conducting polymers (CPs) have found efficient applications in sensors, rechargeable batteries, electrochromic displays, transistors, photovoltaic devices, some light emitting diodes and smart windows [ 74 , 75 , 76 ].…”

Section: Chemical and Physical Properties Of Conducting Polymersmentioning

confidence: 99%

Conducting Polymers in the Design of Biosensors and Biofuel Cells

2020

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Fast and sensitive determination of biologically active compounds is very important in biomedical diagnostics, the food and beverage industry, and environmental analysis. In this review, the most promising directions in analytical application of conducting polymers (CPs) are outlined. Up to now polyaniline, polypyrrole, polythiophene, and poly(3,4-ethylenedioxythiophene) are the most frequently used CPs in the design of sensors and biosensors; therefore, in this review, main attention is paid to these conducting polymers. The most popular polymerization methods applied for the formation of conducting polymer layers are discussed. The applicability of polypyrrole-based functional layers in the design of electrochemical biosensors and biofuel cells is highlighted. Some signal transduction mechanisms in CP-based sensors and biosensors are discussed. Biocompatibility-related aspects of some conducting polymers are overviewed and some insights into the application of CP-based coatings for the design of implantable sensors and biofuel cells are addressed. New trends and perspectives in the development of sensors based on CPs and their composites with other materials are discussed.

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Current trends in the development of conducting polymers-based biosensors

Cited by 131 publications

References 208 publications

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

Effective Adsorption of Hexavalent Chromium and Divalent Nickel Ions from Water through Polyaniline, Iron Oxide, and Their Composites

Advances in Molecularly Imprinted Polymers Based Affinity Sensors (Review)

Conducting Polymers in the Design of Biosensors and Biofuel Cells

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