Enhanced actuation of PPy/CNT hybrid fibers using porous structured DNA hydrogel
- Authors
- Lee, Sun Hee; Lee, Chang Kee; Shin, Su Ryon; Gu, Bon Kang; Kim, Sun I.; Kang, Tong MooK; Kim, Seon Jeong
- Issue Date
- Mar-2010
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Deoxyribonucleic acid; Polypyrrole; Carbon nanotube; Hybrid fiber; Porous structure; Actuator
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.145, no.1, pp.89 - 92
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 145
- Number
- 1
- Start Page
- 89
- End Page
- 92
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/175370
- DOI
- 10.1016/j.snb.2009.11.043
- ISSN
- 0925-4005
- Abstract
- A high-surface-area material has recently attracted interest in actuator systems. We report on improved performance of the simultaneous electrochemical linear actuation of conducting polymer (CP)/carbon nanotube (CNT) hybrid fibers using porous structured deoxyribonucleic acid (DNA) hydrogels. It was deduced that individual DNA-wrapped CNTs had efficiently doped the PPy on its inner and outer surface through the association of PPy with the DNA via a supramolecular interaction. To assess the potential of the PPy/DNA/CNT hybrid fibers for use in electrochemical capacitors and actuators, we showed that the redox response of the hybrid fibers was improved by the addition of DNA to the PPy/CNT film. The values of the measured electrochemical capacitance (similar to 371 F/g in a lithium bis(trifluoromethylsulfonyl)imide aqueous solution, where the joint mass of PPy, DNA, and CNT was considered) were higher than those of previous CNT/PPy composite films with a controlled pore size (similar to 250 F/g). The fibers showed actuation stability with an expansion and contraction of similar to 4.41% under a low potential (+/- 1V). DNA/PPy/CNT hybrid fibers will form the basis for new intelligent materials for applications such as bio-artificial muscles. (C) 2009 Elsevier B.V. All rights reserved.
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