Chemical Synthesis of PEDOT–Au Nanocomposite

Selvaganesh, S. Vinod; Mathiyarasu, J.; Phani, K. L. N.; Yegnaraman, V.

doi:10.1007/s11671-007-9100-6

Cited by 225 publications

(133 citation statements)

References 8 publications

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“…These absorption bands are similar to the previous report of poly(bis-EDOT) [3,12,17]. The IR spectra of the polymer in 5CB shows no CN stretching derived from 5CB, indicating the polymer film is pure poly(bis-EDOT).…”

Section: Irsupporting

confidence: 89%

Sequential process of chiral imprinting and composite formation allows to produce electrooptically active poly(bis-EDOT)/hydroxypropyl cellulose

Yamabe

Goto

2018

Adv Compos Hybrid Mater

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Poly(3,4-ethylenedioxythiophene) (PEDOT) is one of the promising conjugated polymeric materials for organic devices such as organic solar cell or organic electroluminescence display. Hydroxypropyl cellulose (HPC) is a product of chemical-modified cellulose. HPC shows liquid crystal at appropriate condition in solvents. HPC has been used for a binder of medicines and can be applied for green sustainable chemistry in materials science. In this study, poly(bis-(3,4-ethylenedioxythiophene)), abbreviated as poly(bis-EDOT), film is prepared in cholesteric liquid crystals with electrochemical polymerization. We employ a dimer of EDOT (bis-EDOT) as a monomer because bis-EDOT shows good affinity with liquid crystals and the linear shape of bis-EDOT allows pre-orientation in liquid crystal prior to polymerization. The polymer film thus prepared in cholesteric liquid crystals (CLC) shows characteristic circular dichroism (CD) derived from 3-D asymmetric super structure. This study demonstrates that polymerization of the linear-shaped bis-EDOT can effectively imprint 3-D asymmetric structure from HPC as a polymer CLC matrix and form conductive polymer/non-conductive polymer composite.

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Section: Irsupporting

confidence: 89%

Sequential process of chiral imprinting and composite formation allows to produce electrooptically active poly(bis-EDOT)/hydroxypropyl cellulose

Yamabe

Goto

2018

Adv Compos Hybrid Mater

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“…Vibration modes of the C-S bond can be seen at 977, 834, and 686 cm ¹1 . 10,11 The absorption band at 1514 cm ¹1 is due to stretching mode of C=C in thiophene ring, which is not observed post air oven treatment. The oxidation of C=C bonds is believed to be the reason for significant resistance increase of in-situ PEDOT heated in air, which is consistent with previous hypothesis.…”

Section: Resultsmentioning

confidence: 99%

Thermal Stability Investigation of PEDOT Films from Chemical Oxidation and Prepolymerized Dispersion

Jin¹,

Chen²,

Lessner³

2013

Electrochemistry

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Poly(3,4-ethylenedioxythiophene) (PEDOT) films were produced by chemical oxidative polymerization (in-situ PEDOT) and coating aqueous dispersion (slurry PEDOT). Sheet resistance measured before and after heat treatment showed that slurry PEDOT film remained stable in air while in-situ film degraded resulting in a significant increase in resistance. Excellent stability of slurry film was credited to its PEDOT-rich core, Poly(styrenesulfonic acid) (PSS)-rich shell structure, and high molecular weight (M w ) PSS dopant while the degradation of in-situ PEDOT was attributed to oxidation by oxygen in air. Thermal analysis data supported this hypothesis. Fourier Transform Infrared (FT-IR) spectrometry and X-ray photoelectron spectroscopy (XPS) results indicated that C=C bond breaking and decreased doping level were responsible for poor stability of in-situ film in air.

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“…[9,10] These are in addition to the broad PANI peaks, further confirming the existence of Au nanoparticles in the composite hollow nanospheres. The average particle size of nanoparticles was estimated based on the Scherrer equation (D ¼ Rl/ bcosu max ), [17,18] where D is the average particle size in nm, R is Scherrer constant (0.89), l is the wavelength of the X-rays (0.154056 nm), b is the width of the diffraction peak at half height in radians, applied to the (111) peak, and u is the angle at the maximum peak. The average nanoparticle diameter calculated from the XRD data according to the Scherrer equation is 13 AE 4 nm, which is about twice the size of the value obtained from the TEM images, indicating some non-uniformity of the particle sizes.…”

Section: Resultsmentioning

confidence: 99%

Self‐Assembled Hollow Polyaniline/Au Nanospheres Obtained by a One‐Step Synthesis

Zhang

Peng

Kilmartin

et al. 2008

Macromol. Rapid Commun.

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Self‐assembled hollow nanosphere composites of polyaniline and Au nanoparticles (PANI‐p‐TSA/Au) were chemically synthesized from solutions containing p‐toluenesulfonic acid (p‐TSA) with the addition of gold chloride trihydrate as the oxidant. The composite materials were characterized by SEM, TEM, and a range of spectroscopic methods. Spectroscopic characterizations confirmed that the polymeric product is a form of doped PANI, while electron diffraction and X‐ray diffraction showed that elemental Au was present in the PANI‐p‐TSA/Au nanocomposites. The room temperature electrical conductivity of the PANI‐p‐TSA/Au nanocomposites was two orders of magnitude greater than a PANI‐p‐TSA obtained in the presence of ammonium persulfate as the oxidant under the same conditions.magnified image

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Chemical Synthesis of PEDOT–Au Nanocomposite

Cited by 225 publications

References 8 publications

Sequential process of chiral imprinting and composite formation allows to produce electrooptically active poly(bis-EDOT)/hydroxypropyl cellulose

Sequential process of chiral imprinting and composite formation allows to produce electrooptically active poly(bis-EDOT)/hydroxypropyl cellulose

Thermal Stability Investigation of PEDOT Films from Chemical Oxidation and Prepolymerized Dispersion

Self‐Assembled Hollow Polyaniline/Au Nanospheres Obtained by a One‐Step Synthesis

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