Hydrophobic and flexible conductive films consisting of PEDOT:PSS-PBA/fluorine-modified silica and their performance in weather stability

Yin, Hui-En; Huang, Feng-Hsi; Chiu, Wen‐Yen

doi:10.1039/c2jm31352a

Cited by 48 publications

(37 citation statements)

References 59 publications

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“…Due to the poor control on the polymerization process in this case, the sheet resistance has been shoot up to 10 MΩ/□, compared to 24 Ω /□ for PEDOT-1. Contact angle measurement supports its hydrophobic nature with a water contact angle of 131 o , which is much higher than that displayed by PEDOT-bulk (55 o ) and samples listed in the previous few reports [33][34][35] (inset of Figure 2b). For comparative studies, we have also prepared PEDOT powder from pure n-butanol by normal solution method, which hereafter is termed as PEDOT-bulk.…”

Section: Resultssupporting

confidence: 59%

Novel scalable synthesis of highly conducting and robust PEDOT paper for a high performance flexible solid supercapacitor

Anothumakkool

Soni

Bhange

et al. 2015

Energy Environ. Sci.

370

245

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Here, we report a novel synthetic strategy to prepare a highly conducting polyethylenedioxythiphene (PEDOT) phase on flexible cellulose paper formed by inducing surfactant-free interfacial polymerization at the interface of two immiscible liquids. The illustrated process is highly scalable in such a way that very large flexible PEDOT paper can be prepared in 2-3 h under laboratory conditions. The obtained PEDOT-paper possesses efficiently packed π-conjugated chains and increased doping level which is proven by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and conductivity and UV-visble measurements. This favourable change has been attained by the slow polymerization coupled with the high dielectric constant of the interface, which stabilise the counter ions through hydrogen bonding. This helps for better inter-chain and intra-chain charge mobility, leading to conductivity as high as 375 S cm -1 compared to 30 S cm -1 of the PEDOT prepared in n-butanol. A low sheet resistance of 3 Ω/□ is achieved by multiple coating, which is found to be stable even after two months under ambient conditions and at various flexible and bending conditions. A flexible solid-state supercapacitor with an overall thickness of 0.17 mm made from the PEDOT paper and PVA-H 2 SO 4 as the solid electrolyte exhibits a volumetric energy density of 1 mWh cm -3 . The specific capacitance measured per mass of PEDOT in the system is 115 F g -1 along with a high volumetric capacitance of 145 F cm -3 . The above observed values are significantly higher compared to the bulk PEDOT tested on solid current collectors as well as highest among the literature reports. The flexible devices are found to be very stable during the charge-discharge cycling under twisted and bending conditions for more than 3800 cycles. A 3.6 V inter-digitized flexible device could also be made in a single PEDOT paper, which is found to be powered enough to glow an LED under flexible conditions.

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Section: Resultssupporting

confidence: 59%

Novel scalable synthesis of highly conducting and robust PEDOT paper for a high performance flexible solid supercapacitor

Anothumakkool

Soni

Bhange

et al. 2015

Energy Environ. Sci.

370

245

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“…Grafting densities of ≈0.4 nm −2 were previously reported for PBA prepared by SI‐ATRP . The homopolymer brushes demonstrated water contact angles of 75.0–80.5°, which were comparable to literature data for PBA brushes …”

Section: Resultssupporting

confidence: 89%

Synthesis of Well‐Defined Polymer Brushes from Silicon Wafers via Surface‐Initiated se ATRP

Chmielarz

Krys

Wang

et al. 2017

Macromol. Chem. Phys.

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Synthesis of densely grafted (co)polymer brushes, including poly(n‐butyl acrylate), poly(2‐dimethylaminoethyl methacrylate), poly(n‐butyl acrylate)‐block‐poly(tert‐butyl acrylate), and poly(2‐dimethylaminoethyl methacrylate)‐block‐poly(tert‐butyl acrylate) from silicon wafer surfaces via a simplified surface‐initiated electrochemically mediated atom transfer radical polymerization under constant potential/current conditions is reported. A sacrificial (nontethered) initiator is added to form free polymer chains in solution used to estimate the molecular weights and molecular weight distributions of chains attached to the surface. The polymers show narrow molecular weight distributions (Đ = 1.10–1.33). Water contact angle measurements and ellipsometry are used to characterize wettability and thicknesses of the modified surfaces. Grafting densities up to 0.93 nm−2 are obtained. The rate of the polymerization is controlled by applying more negative potential values, which results in an increase in the surface thickness (up to 116 nm). Finally, the poly(tert‐butyl acrylate) blocks are hydrolyzed to the poly(acrylic acid) blocks. These new, densely grafted brushes are promising candidates for applications in microelectronics, nanotechnology, tailoring of surface properties, nanopatterning, or antifouling coatings.

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“…Many original research papers, reviews, book chapters and books concerning composites of PEDOT–PSS and their applications have also been published in recent years . Second, the syntheses of PEDOT–PSSs that includes water‐insoluble positive PEDOTs surrounded by negatively charged PSS, water‐insoluble positive PEDOT surrounded by negatively charged PSSs, and water‐insoluble positive PEDOTs surrounded by negatively charged PSSs, especially nano/micro‐structural PEDOT–PSSs have been synthesized and utilized . Third, different techniques/methods such as the doping, treatment, and preparative methods for PEDOT–PSS chemistry were also reported, which involved in lots of literature .…”

Section: Challenges Of Pedot–pss Film Electrodementioning

confidence: 99%

Scientific Importance of Water‐Processable PEDOT–PSS and Preparation, Challenge and New Application in Sensors of Its Film Electrode: A Review

Wen

2017

J. Polym. Sci. Part A: Polym. Chem.

294

196

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In this review, PEDOT-PSS is mainly a commercially available PEDOT-PSS, which is a water-dispersible form of the intrinsically conducting PEDOT doped with the watersoluble PSS, including its derivatives, copolymers, analogs (PEDOT:PSSs), even their composites via the chemical or physical modification toward the structure of PEDOT and/or PSS. First, we will focus on discussing the scientific importance of PEDOT-PSS in conjunction with its extraordinary properties and broad multidisciplinary applications in organic/polymeric electronics and optoelectronics from the viewpoint of the historical development and the promising application of representative ECPs. Subsequently, versatile film-forming techniques for the preparation of PEDOT-PSS film electrode were described in details, including common coating approaches and printing techniques, and many emerging preparative methods were mentioned. Then challenges (e.g., conductivity, stability in Water, adhesion to substrate electrode) of PEDOT-

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Hydrophobic and flexible conductive films consisting of PEDOT:PSS-PBA/fluorine-modified silica and their performance in weather stability

Cited by 48 publications

References 59 publications

Novel scalable synthesis of highly conducting and robust PEDOT paper for a high performance flexible solid supercapacitor

Novel scalable synthesis of highly conducting and robust PEDOT paper for a high performance flexible solid supercapacitor

Synthesis of Well‐Defined Polymer Brushes from Silicon Wafers via Surface‐Initiated se ATRP

Scientific Importance of Water‐Processable PEDOT–PSS and Preparation, Challenge and New Application in Sensors of Its Film Electrode: A Review

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