Flexibility and electrical and humidity-sensing properties of diamine-functionalized graphene oxide films

Su, Pi-Guey; Lu, Zhang-Mao

doi:10.1016/j.snb.2015.01.089

Cited by 67 publications

(23 citation statements)

References 36 publications

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“…Recent studies have demonstrated that the humidity-sensing properties of pure polymers could be improved by introducing an additional material, i.e. by making composites [13][14][15]. In this regard, graphene oxide has attracted much attention as a potential candidate to improve polymeric sensor response characteristics [9,14,16].…”

Section: Introductionmentioning

confidence: 99%

High-performance optical fiber humidity sensor based on lossy mode resonance using a nanostructured polyethylenimine and graphene oxide coating

Hernáez

Acevedo

Mayes

et al. 2019

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

High-performance optical fiber humidity sensor based on lossy mode resonance using a nanostructured polyethylenimine and graphene oxide coating

Hernáez

Acevedo

Mayes

et al. 2019

Sensors and Actuators B: Chemical

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“…Various transduction techniques, such as capacitive, resistive, acoustic, optical and mechanical, have been adopted for the design of humidity sensors. Novel sensing materials, such as graphene oxide (GO), have recently been introduced in humidity sensors [11][12][13][14][15][16][17][18][19][20][21]. (e-mails: aida.mansouri@polimi.it, luca.anzi@polimi.it and roman.sordan@polimi.it).…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Flexible Ink-Jet Printed Humidity Sensors Based on Graphene Oxide

et al. 2018

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This paper presents design, fabrication and characterization of flexible capacitive graphene oxide (GO) based humidity sensors, which can be used in many applications, such as environmental protection, civil engineering, and agriculture. They consist of interdigitated electrodes ink-jet printed on a polyimide flexible substrate and GO based sensing layer. Measurement setup for testing and characterization was developed in laboratory conditions. The dependence of the capacitance and resistance of the GO based humidity sensors on the percentage of the applied humidity is presented. The main advantage of developed GO based capacitive humidity sensors is very large variation of capacitance, almost five orders of magnitude, compared to the previously demonstrated sensors. The other advantages of the sensors are fast response-recovery time, excellent reproducibility of the measurement results and use of cost-effective additive ink-jet technology.

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“…[23] MWCNTs-PPD was synthesized through an amidation reaction using MWCNTs-COOH, N,N 0 -dicyclohexylcarbodiimide (DCC) and p-phenylenediamine as reactants. [24] Typically, MWCNTs-COOH and DCC were added to 50 mL of anhydrous ethanol for ultrasonic dispersion, and the obtained solution was heated at 50 C with stirring for 30 minutes, next 25 mL of PPD/anhydrous ethanol solution was slowly added to the above dispersion and refluxed at 50 C for 24 hours. When the reaction was over, we centrifuged and washed the product with chloroform and acetone for multiple times.…”

Section: Synthesis Of P-phenylenediamine Functionalized Multi-wallementioning

confidence: 99%

Water‐dispersible polyaniline‐carbon nanotubes composites with interface covalent bond and their enhanced electrochemical and electrochromic properties

Wang

Xiong

Wang

et al. 2020

Polymer Engineering & Sci

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The water‐dispersible electrochormic nanocomposites, polyaniline (PANI) connected multi‐walled carbon nanotubes (MWCNTs) by covalent bond were synthesized through a grafting polymerization process of aniline monomer with functionalized MWCNTs. N,N′‐dicyclohexylcarbodiimide (DCC) was used as dehydrant for functionalization process of MWCNTs with p‐phenylenediamine (PPD). The transmission electron microscope (TEM), scanning electron microscopy (SEM), thermal gravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FT‐IR) were used to study the morphologies, thermal stabilities and chemical structures of the nanocomposites, respectively. The UV‐vis absorbance spectra and cyclic voltammetry behaviors of nanocomposites were tested by UV‐vis spectrometer and electrochemical workstation, respectively. It is shown show that PANI‐MWCNTs nanocomposites not only exhibit good water solubility, but also exhibit excellent film‐forming properties. The results confirm that the π‐π interactions and interfacial covalent bond between PANI and MWCNTs endow PANI‐MWCNTs excellent electrochemical and electrochromic properties. The conductive network composed of PANI and MWCNTs can significantly improve the ion transports, electron conduct and electrochromic performance of PANI. The PANI‐MWCNTs‐0.6% nanocomposite film shows highest optical contrast value (0.78) and shortest response time (3.8 seconds for coloring and 3.2 seconds for bleaching) among neat PANI and PANI‐MWCNTs nanocomposites.

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Flexibility and electrical and humidity-sensing properties of diamine-functionalized graphene oxide films

Cited by 67 publications

References 36 publications

High-performance optical fiber humidity sensor based on lossy mode resonance using a nanostructured polyethylenimine and graphene oxide coating

High-performance optical fiber humidity sensor based on lossy mode resonance using a nanostructured polyethylenimine and graphene oxide coating

Performance Analysis of Flexible Ink-Jet Printed Humidity Sensors Based on Graphene Oxide

Water‐dispersible polyaniline‐carbon nanotubes composites with interface covalent bond and their enhanced electrochemical and electrochromic properties

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