Synthesis, characteristics, and field emission of doped and de-doped polypyrrole, polyaniline, poly(3,4-ethylenedioxythiophene) nanotubes and nanowires

Kim, B.H.; Park, D.H.; Joo, Jinsoo; Yu, SeGi; Lee, S.H.

doi:10.1016/j.synthmet.2005.02.012

Cited by 222 publications

(73 citation statements)

References 36 publications

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“…In recent years electrically conducting polymers have received much attention for use as advanced materials due to their good physical attributes [1][2][3]. Among the various conducting polymers such as polypyrrole, polythiophene, polyaniline, etc., polypyrrole is an especially promising electrically conducting polymer for commercial applications due to its high conductivity, good environmental stability and ease in synthesis.…”

Section: Introductionmentioning

confidence: 99%

DC electrical conductivity and rate of ammonia vapour-sensing performance of synthetic polypyrrole–zirconium(IV) phosphate cation exchange nanocomposite

2017

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Electrically conductive polypyrrole-zirconium(IV) phosphate (PPy-ZrP) cation exchange nanocomposites have been synthesized for the first time by in situ chemical oxidative polymerization of pyrrole in the presence of zirconium(IV) phosphate (ZrP). Fourier Transform Infra-red spectroscopy (FTIR), field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis, differential thermal analysis, derivative thermogravimetry and elemental analysis were used to characterize PPy-ZrP cation exchange nanocomposite. The composite showed good ion-exchange capacity (1.60 meq g -1 ), DC electrical conductivity (0.33 S cm -1 ) and isothermal stability in terms of DC electrical conductivity retention under ambient condition up to 100°C. PPy-ZrP cation exchangenanocomposite-based sensor was fabricated for the detection of ammonia vapours of aqueous ammonia. The resistivity of the nanocomposites increases on exposure to high-concentration ammonia vapours at room temperature (25°C). The rate of reaction for ammonia vapour-sensing on PPy-ZrP was observed as second order.

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Section: Introductionmentioning

confidence: 99%

DC electrical conductivity and rate of ammonia vapour-sensing performance of synthetic polypyrrole–zirconium(IV) phosphate cation exchange nanocomposite

2017

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“…The electron field emission is one of the most interesting applications in cold cathode devices, miniature microwave generators, monochromatic electron sources and microelectronics [6,7] in general. The conventional electronic devices usually utilise electron beams through thermionic emission which is power consuming because of heating of the cathode to high temperature up to 2000 C. The researchers all over the world and lot of financial flows are directed to obtaining a stable and high current field electron emission that can be used for field emission displays, which has a wide market in personal computers.…”

Section: Introductionmentioning

confidence: 99%

Preparation and field emission study of low-dimensional ZnS arrays and tubules

Chauhan

Kumar

Chakarvarti

2013

Journal of Experimental Nanoscience

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In the present work, freestanding ZnS nanotipped arrays and hollow tubules have been generated using an electrodeposition technique via template synthesis. The structures and morphologies of the arrays and tubules were investigated using X-ray diffraction and scanning electron microscopy, respectively. Electron field emission properties of the ZnS nanotipped arrays and tubules have been studied in a good vacuum condition at room temperature and current-voltage characteristics were found to follow the Fowler-Nordheim theory.It is found that ZnS tubules show good electron field emission properties at low voltage with large field enhancement factor compared to ZnS solid arrays. Optical properties of such synthesised structures were also studied using ultravioletvisible spectrophotometery.

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“…Among numerous approaches, poly(3,4-ethylenedioxythiophene) (PEDOT) has been added to SWCNT films to enhance the conductivity. [14][15][16][17][18][19] PEDOT is one of the most popular conducting polymers because of its high conductivity and transparency in thin oxidized films. This material also exhibits environmental stability.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of conductive and transparent single-walled carbon nanotube films with PEDOT

Yun

Han

Kim

2012

Polym J

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In this paper, the fabrication of highly conductive and transparent films of single-walled carbon nanotubes (SWCNTs) and poly(3,4-ethylenedioxythiophene) (PEDOT) on top of polyethylene terephthalate film (PET) substrates is demonstrated using electropolymerization without sacrificing transparency. A sheet resistance of 250 X sq À1 is achieved with a transparency of 93% at a 550 nm wavelength. The enhancement in the conductivity was attributed to the ability to bridge the gaps between the individual carbon nanotubes with the help of PEDOT, which increases the number of electric tube-tube junction contacts within the SWCNT network. Polymer Journal ( Keywords: electropolymerization; poly(3,4-ethylenedioxythiophene); single-walled carbon nanotube; 4-dodecylbenzenesulfonic acid INTRODUCTION Indium tin oxide (ITO) is one of the most widely used materials in electronics. High conductivity and transparency are unique properties of ITO. 1 For the past decades, most of the electronics that require display panels have been fabricated by using ITO; however, this material has some disadvantages and limitations. A lack of resources, the high cost of patterning on desired substrates, and poor mechanical properties are the main factors that prevent the application of ITO in many areas. 2,3 Different approaches have been investigated for producing transparent and conductive layers without using ITO. For example, single-walled carbon nanotubes (SWCNTs) have been used to fabricate conductive and transparent layers. 4,5 In SWCNTs, electrons flow 10 times faster than in silicon. This material also carries 100 times the current and dissipates heat 20 times more efficiently. Transistors fabricated using SWCNTs can also amplify current 20 times better than conventional silicon-based transistors. SWCNTs have a broad range of sheet resistance values (10-10 7 O sq À1 .), excellent transparency, good adhesion, good chemical resistance and good flexibility. 6-13 However, the trade-off between conductivity and transparency still remains a problem for SWCNT applications. Among numerous approaches, poly(3,4-ethylenedioxythiophene) (PEDOT) has been added to SWCNT films to enhance the conductivity. [14][15][16][17][18][19]

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Synthesis, characteristics, and field emission of doped and de-doped polypyrrole, polyaniline, poly(3,4-ethylenedioxythiophene) nanotubes and nanowires

Cited by 222 publications

References 36 publications

DC electrical conductivity and rate of ammonia vapour-sensing performance of synthetic polypyrrole–zirconium(IV) phosphate cation exchange nanocomposite

DC electrical conductivity and rate of ammonia vapour-sensing performance of synthetic polypyrrole–zirconium(IV) phosphate cation exchange nanocomposite

Preparation and field emission study of low-dimensional ZnS arrays and tubules

Fabrication of conductive and transparent single-walled carbon nanotube films with PEDOT

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