Polyaniline Nanofibers:  Facile Synthesis and Chemical Sensors

Huang, Jiaxing; Virji, Shabnam; Weiller, Bruce H.; Kaner, Richard B.

doi:10.1021/ja028371y

Cited by 1,635 publications

(1,180 citation statements)

References 23 publications

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“…It is reported that the organic precursor of aniline can be converted into electronically conductive carbon through pyrolysis processes at high temperatures 37 . In this process of synthesis of polyaniline, probably carbons are produced from the oxidation process of aniline, which may increase the conductivity of polyaniline.…”

Section: Tem Analysismentioning

confidence: 99%

Fabrication of Novel Amperometric Sensor for the Detection of Zinc Metal as an Environment Pollutant

2018

Chem Sci Trans

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Abstract:We have fabricated graphite, carbon nanotube (CNT) and conducting polymer (polyaniline) based electrochemical sensor for the detection of zinc metal as an environment pollutant. The electrochemical performance of amperometric sensor was tested by cyclic voltammetry, amperometry and linear sweep voltammetry experiments. The developed amperometric sensor displays good electrochemical activity towards the detection of zinc present in the environment. Storage and stability conditions were also tested. Fabricated non-enzymatic amperometric sensor was successfully used for the precise, sensitive and specific detection of zinc metal present as an environment pollutant.

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Section: Tem Analysismentioning

confidence: 99%

Fabrication of Novel Amperometric Sensor for the Detection of Zinc Metal as an Environment Pollutant

2018

Chem Sci Trans

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“…For each experiment, the multi-pen tips 5 were dipped into inkwells and then initial contact made with the surface prior to patterning to remove excess ink from the tip. After this initial "bleeding" step, it was possible to stably pattern dots across all 12 pens for well in excess of over an hour, which amounted to 40 µm dot arrays (comprising 9x9 dots) being able 10 to cover an approximate surface area of 2 x 2 mm (each pen is separated by ~60 µm).…”

Section: Dpn Pattering Of Pedot:pss Inksmentioning

confidence: 99%

“…In particular, 35 nanoscale CP sensors for detection of gases and biomolecules can provide relatively higher sensitivity and faster response times than conventional macro-and microsized sensors. [2][3][4][5] Thus miniaturization of chemical and biological sensors is desirable and provides further opportunities for lowering detection limits, 40 reducing volumes needed for sensing, enhancing selectivity, increasing portability and in vivo applicability.…”

Section: Introductionmentioning

confidence: 99%

“…13,14 DPN has been extensively used for the printing of metal nanoparticle, [15][16][17] organic compounds 12,18,19 and more recently applied to patterning of CPs. [20][21][22][23][24] The DPN deposition process is ascribed by two mechanisms 5 depending of the type of material that is deposited. When patterning relatively small molecules the transport through a liquid meniscus has been proposed.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and optimization of PEDOT:PSS based ink for printing nanoarrays using Dip-Pen Nanolithography

et al. 2013

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Due to the current interest in organic printable electronics, Dip-Pen Nanolithography (DPN) is increasingly being explored as a method to pattern electroactive materials such as conducting polymers (CPs) on the micro-and nanoscale. In general, printing process depends strongly on the ink-substrate properties and fundamental forces required to drive and stabilize the ink transfer to the substrate. Controlling these parameters is especially difficult when operating under the nanometer confinements of the DPN probe. For the printing of CPs, one step towards addressing these challenges is rational ink design, as the use of existing commercial-based inks may not be suitable for the DPN ink transfer process on the nanoscale. Due the current interest in organic printable electronics, Dip-Pen Nanolithography (DPN) is increasingly being explored as a method to pattern electromaterials such as conducting polymers (CPs) on the microand nanoscale. In general, printing process depends strongly on the ink-substrate properties and fundamental forces required to energetically drive and stabilize the ink transfer to the substrate. 10Controlling these parameters is especially difficult when operating under the nanometer confinements of the DPN probe. For the printing of CPs, one step toward addressing these challenges is rational ink design, as the use of existing commercial-based inks may not be suitable for the DPN ink transfer process on the nanoscale. In this study, we synthesized and developed a poly(3,4 ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)-based ink, to which we could add known constituents for 15 optimizing the printing, adhesive and conductive properties of an aqueous dispersed ink. For silicon and gold surfaces, we demonstrate that the DPN pattering of the ink could achieve PEDOT:PSS (dot) arrays with diameters ranging from the submicron down to ~160 nm. These dimensions represent a dramatic improvement in resolution compared to previous attempts in patterning of CP via physioadsorption process using DPN. This work highlights that rational design of CP inks is critical, especially for DPN 20 where the ink transfer process is governed by fluid physical properties and surface forces in the nanodomain. Knowledge of the constituents and overall ink composition will also lead to a greater understanding of these fundamentals that facilitate the pattering of CP inks on the nanoscale using DPN.

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“…Hence, they can be used in a variety of possible sensing applications. By exploiting their chemical selectivity, polymer nanowires can be used to detect a wide range of chemical compounds including toxics gases, metal ions, and DNA (Huang et al 2003;Wang et al 2002;Ramanathan et al 2005). Polymer nanowires have been studied for use as chemical sensors, biosensors, organic light emitting diodes, and organic solar cells (Huang et al 2003;Liu et al 2004;Ramanathan et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

et al. 2016

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An integrated ormocomp nanowire coated with gold metal layer is proposed and its optical characteristics with the effect of surface plasmon resonance (SPR) are studied. The integrated rib-like nanowire has a trapezoidal shape with sidewall angles of 75°. It is coated with 50 nm gold layer to introduce the SPR and enhance the evanescent field in the sensing region located at the dielectric/metal interface. The possible field modes, the normalized power confinement, and the SPR peak position of the nanowire are studied over the wavelength and the metal thickness by using the full-vectorial H-field FEM in quasi-TM mode. The attenuation coefficient of the nanowire, the SPR peak wavelength, and the wavelength shift is experimentally extracted for three different cladding materials. The redshift of the supermode coupling between the dielectric mode and the anti-symmetric supermode is observed with the higher cladding-index and larger metal thickness. The improvement of the power confinement in the sensing region with the SPR effect is ten times (109) better than a previous similar study.

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Polyaniline Nanofibers: Facile Synthesis and Chemical Sensors

Cited by 1,635 publications

References 23 publications

Fabrication of Novel Amperometric Sensor for the Detection of Zinc Metal as an Environment Pollutant

Fabrication of Novel Amperometric Sensor for the Detection of Zinc Metal as an Environment Pollutant

Synthesis and optimization of PEDOT:PSS based ink for printing nanoarrays using Dip-Pen Nanolithography

Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

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