Optical, structural and electrical properties of polyaniline systems doped with C60 and small gap C60 fullerenes

Politakos, Nikolaos; Zalakain, Iñaki; d’Arlas, Borja Fernández; Eceiza, Arantxa; Kortaberría, Galder

doi:10.1016/j.matchemphys.2013.07.033

Cited by 24 publications

(19 citation statements)

References 52 publications

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“…The phenomenon that explained the intrachain and interchain between fullerenes (C 60 and S.G.F) and PAni in this research study is strongly agreed with the proposed mechanism for the charge transfer between PAni/N,N‐Dimethylformamide composites with different fullerene system (C 60 and S.G.F) as reported by Politakos and co‐workers …”

Section: Resultssupporting

confidence: 91%

“…Nevertheless, to the best of our knowledge, there are not many works done on PAni and small gap fullerene (S.G.F) which it is one of the types of fullerenes that consists the mixture of fullerenes from C 60 to C 84 and higher. According to Politakos and co‐workers, PAni systems that incorporated with S.G.F produced the composites in bulk particles form based on the optical micrograph and with moderate electrical conductivity of 7.2 × 10 −5 S/cm …”

Section: Introductionmentioning

confidence: 62%

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Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO₂) Doped with Different Types of Fullerenes

Mokhtar

Chye

Ang

2018

Macromolecular Symposia

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In this work, Polyaniline/titanium dioxide (PAni/TiO2) nanocomposites without and with addition of fullerene such as pristine fullerene (C60) and small gap fullerene (S.G.F) were prepared through template‐free method by using hexanoic acid (HA) as a dopant. FTIR and UV‐Vis spectra confirmed the chemical structure of conjugated PAni and indicated that the resulted PAni is in conducting state. The existence of fillers in PAni nanocomposites were confirmed by the characteristic peaks of TiO2 and fullerene in XRD pattern. Based on FESEM images obtained, nanocomposites formulated with C60 (PAni/HA/TiO2/C60) formed the nanorods/nanotubes and microrods/microtubes with the biggest diameter (240 nm), followed by PAni with S.G.F (PAni/HA/TiO2/S.G.F) and PAni without the addition of fullerene (PAni/HA/TiO2) with diameter of 180 nm and 160 nm, respectively. Besides, PAni/HA/TiO2/C60 also possessed the highest electrical conductivity of 1.708 × 10−1 S/cm as compared to PAni/HA/TiO2/S.G.F and PAni/HA/TiO2 (4.531 × 10−3 S/cm to 1.439 × 10−2 S/cm). Microwave absorption studies of PAni nanocomposites were carried out by using Microwave Vector Network Analyzer (MVNA) in the frequency range of 0.5–18.0 GHz. Among all nanocomposites, PAni/HA/TiO2/C60 exhibited a narrow and the highest reflection loss (RL) peak of −61.3 dB at 9 GHz due to the highest conductivity (1.708 × 10−1 S/cm), dielectric permittivity (0.46) and heterogeneity of PAni (larger amount of nanorods/nanotubes and microrods/microtubes) that have induced more disordered motion of charge carrier along the backbone of PAni. Thus, it eventually enhanced the molecular polarization such as greater space charge relaxation and hopping of confined charges.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 62%

Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO₂) Doped with Different Types of Fullerenes

Mokhtar

Chye

Ang

2018

Macromolecular Symposia

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“…Fullerene (C 60 ) is one of the most popular examples to be functionalized . There is a massive drive to understand C 60 (Fullerene) derivatives and improve their properties in last decade since C 60 's interesting properties such as conducting, gas sensing, photovoltaic, and electrical have been observed. However, many of its potential applications have been limited by its poor solubility and processability .…”

Section: Introductionmentioning

confidence: 99%

α‐Thiophene end‐capped styrene copolymer containing fullerene pendant moieties: Synthesis, characterization, and gas sensing properties

Şennik

Sennik

Alev

et al. 2016

J of Applied Polymer Sci

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We report the synthesis, characterization, and gas sensing properties of a styrene copolymer bearing α‐thiophene end group and fullerene (C60) pendant moieties P(S‐co‐CMS‐C60). First, the copolymer of styrene (S) and chloromethylstyrene (CMS) monomers was prepared in bulk via a bimolecular nitroxide‐mediated radical polymerization (NMP) technique using benzoyl peroxide (BPO) as the radical initiator and nitroxy‐functional thiophene compound (Thi‐TEMPO) as the co‐radical and this gave α‐thiophene end‐capped copolymer P(S‐co‐CMS). The chloromethylstyrene units of P(S‐co‐CMS) allowed further side‐chain functionalization onto P(S‐co‐CMS). The obtained P(S‐co‐CMS) was then reacted with sodium azide (NaN3) and this led to the copolymer with pendant azide groups, P(S‐co‐CMS‐N3), and then grafted with electron‐acceptor C60 via the reaction between N3 and C60. The final product was characterized by using NMR, FTIR, and UV–vis methods. Electrical characterization of P(S‐co‐CMS‐C60) thin film was also investigated at between 30 and 100 °C as the ramps of 10 °C. Temperature dependent electrical characterization results showed that P(S‐co‐CMS‐C60) thin film behaves like a semiconductor. Furthermore, P(S‐co‐CMS‐C60) was employed as the sensing layer to investigate triethylamine (TEA), hydrogen (H2), acetone, and ethanol sensing properties at 100 °C. The results revealed that P(S‐co‐CMS‐C60) thin film has a sensing ability to H2. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43641.

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“…The presence of these dopants also affected the increase in the degree of oxidation, the percentage of protonation and crystallinity. The increase in the degree of oxidation lead to the change of the formation of polaron, so that the increment of dopants molarity in polymerization resulted in increasing the value of the conductivity of polyaniline [12,13].…”

Section: Conductivity Characteristicsmentioning

confidence: 99%

Electrical Conductivity of Polyaniline Fiber Synthesized by Interfacial Polymerization and Electrospinning

Umiati

Abraha

Triyana

2017

IJEECS

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Optical, structural and electrical properties of polyaniline systems doped with C60 and small gap C60 fullerenes

Cited by 24 publications

References 52 publications

Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO₂) Doped with Different Types of Fullerenes

Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO₂) Doped with Different Types of Fullerenes

α‐Thiophene end‐capped styrene copolymer containing fullerene pendant moieties: Synthesis, characterization, and gas sensing properties

Electrical Conductivity of Polyaniline Fiber Synthesized by Interfacial Polymerization and Electrospinning

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Optical, structural and electrical properties of polyaniline systems doped with C60 and small gap C60 fullerenes

Cited by 24 publications

References 52 publications

Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO2) Doped with Different Types of Fullerenes

Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO2) Doped with Different Types of Fullerenes

α‐Thiophene end‐capped styrene copolymer containing fullerene pendant moieties: Synthesis, characterization, and gas sensing properties

Electrical Conductivity of Polyaniline Fiber Synthesized by Interfacial Polymerization and Electrospinning

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Product

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Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO₂) Doped with Different Types of Fullerenes

Microwave Absorption Properties of Polyaniline/Titanium Dioxide (PAni/TiO₂) Doped with Different Types of Fullerenes