Dispersion of multi-walled carbon nanotubes in poly(p-phenylene) thin films and their electrical characteristics

Ilcham, Adi; Srisurichan, Amornwong; Soottitantawat, Apinan; Charinpanitkul, Tawatchai

doi:10.1016/j.partic.2009.03.006

Cited by 10 publications

(1 citation statement)

References 14 publications

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“…Therefore, a novel sensor for benzene detection with high sensitivity at room-temperature and simplicity in fabrication has been stringently required. One of the promising approaches is use of nanomaterials, such as carbon nanotubes (CNTs), as gas-sensing material because of their large effective surface area and unique electronic properties [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Study on Effect of Acid and Heat Treatments of Multi-Walled Carbon Nanotubes on Benzene Detection

Chobsilp

Wongwiriyapan

Issro

et al. 2015

AMR

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Effect of acid and heat treatments of multi-walled carbon nanotubes (MWCNTs) on benzene detection was investigated. For acid treatment, MWCNTs were treated by hydrochloric acid (HCl) for 1 h meanwhile other batches of MWCNTs were treated by heating under air ambient at 500°C for 1 h. Pristine, HCl-treated and heat-treated MWCNTs were separately coated with ethyl cellulose (EC) by spin-coating prior to fabrication of three different sensors named as EC/pristine MWCNTs, EC/HCl-MWCNTs and EC/heat-MWCNTs sensors, respectively. Each fabricated sensor was exposed to benzene vapor at room temperature for testing its sensing performance based on an increase in its electrical resistance which was sensitive to benzene vapor. Response of the sensors fabricated from EC/HCl-MWCNTs and EC/heat-MWCNTs were 3.66 and 1.92 times higher than that of EC/pristine MWCNTs, respectively. Sensitivity of all sensors would be attributed to swelling of EC, resulting in loosening of MWCNT network after benzene vapor exposure. In addition, the difference of sensing response of the EC/pristine MWCNTs when compared with those of EC/HCl-MWCNTs and EC/heat-MWCNTs would be ascribed to different crystallinity and functionalization of MWCNTs sidewalls, suggesting that acid and heat treatments of MWCNTs would be promising techniques for improvement of benzene detection.

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Section: Introductionmentioning

confidence: 99%

Study on Effect of Acid and Heat Treatments of Multi-Walled Carbon Nanotubes on Benzene Detection

Chobsilp

Wongwiriyapan

Issro

et al. 2015

AMR

Self Cite

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Applications of Polymer–Nanotube Composites

Grady

2011

Carbon Nanotube–Polymer Composites

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Ultrathin Electronic Composite Sheets of Metallic/Semiconducting Carbon Nanotubes Embedded in Conjugated Block Copolymers

Sung

Huh

Choi

et al. 2010

Adv Funct Materials

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Ultrathin composite films consisting of mixtures of metallic (m‐) and semiconducting (s‐) single‐walled carbon nanotubes (SWNTs) with a conjugated block copolymer are developed from a solution‐based process. The electronic properties of the films are precisely controlled from metallic to semiconducting to insulating. The tunability of the electronic composite sheets is mainly attributed to (1) the efficient dispersion of SWNTs with a conjugated block copolymer in solution, (2) the control of the number of nanotubes by centrifugation, and (3) the individually networked deposition of SWNTs embedded in the conjugated block copolymer on the target substrate by spin‐coating. A highly reliable field‐effect transistor with a networked composite film is realized with a specific range of tube density and a high on/off current ratio of approximately 106 which resulted from the Schottky barriers evolved between the individual m‐ and s‐SWNTs in the network. There is also great freedom when choosing both the gate dielectrics and source‐drain electrodes for transistors containing the composite films. Furthermore, the fabricated electronic composites are highly transparent, flexible, and chemically robust and thus, they can be conveniently micropatterned by photolithography, as well as by unconventional transfer printing techniques.

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Dispersion of multi-walled carbon nanotubes in poly(p-phenylene) thin films and their electrical characteristics

Cited by 10 publications

References 14 publications

Study on Effect of Acid and Heat Treatments of Multi-Walled Carbon Nanotubes on Benzene Detection

Study on Effect of Acid and Heat Treatments of Multi-Walled Carbon Nanotubes on Benzene Detection

Applications of Polymer–Nanotube Composites

Ultrathin Electronic Composite Sheets of Metallic/Semiconducting Carbon Nanotubes Embedded in Conjugated Block Copolymers

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