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Biocompatible Conductive Polymers with High Conductivity and High Stretchability.
ACS Appl Mater Interfaces 2019; 11(29):26185-26193AA

Abstract

Stretchable electronic materials have drawn strong interest due to their important applications in areas such as bioelectronics, wearable devices, and soft robotics. The stretchable electrode is an integral unit of stretchable systems. Intrinsically conductive polymers such as poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) can have high mechanical flexibility and good biocompatibility. However, their electrical conductivity and mechanical stretchability should be greatly improved for its applications as the stretchable electrode. Here, we report highly conductive and highly stretchable PEDOT:PSS by incorporating biocompatible d-sorbitol. d-Sorbitol can serve as both the secondary dopant and plasticizer for PEDOT:PSS. It can not only significantly improve the conductivity but also the stretchability. d-Sorbitol-PEDOT:PSS (s-PEDOT:PSS) can have a conductivity of >1000 S/cm, and the conductivity could be maintained at a strain up to 60%. The resistance of s-PEDOT:PSS remains almost constant during repeated stretching-releasing cycles. The mechanism for the stretchability improvement by d-sorbitol is ascribed to the softening of PSSH chains. d-Sorbitol can position among the PSSH chains and thus destructs the hydrogen bonds among the PSSH chains. This makes the conformational change of the PSSH chains under stress become easy and thus increases the mechanical flexibility of PEDOT:PSS. This conductivity is the highest for biocompatible intrinsically conductive polymers with high stretchability.

Authors+Show Affiliations

Department of Materials Science & Engineering , National University of Singapore , Singapore 117579.Department of Materials Science & Engineering , National University of Singapore , Singapore 117579.Department of Materials Science & Engineering , National University of Singapore , Singapore 117579.Department of Materials Science & Engineering , National University of Singapore , Singapore 117579.Department of Materials Science & Engineering , National University of Singapore , Singapore 117579.Singapore Institute of Manufacturing Technology , 71 Nanyang Drive , 638075 Singapore.Singapore Institute of Manufacturing Technology , 71 Nanyang Drive , 638075 Singapore.Department of Materials Science & Engineering , National University of Singapore , Singapore 117579.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31257845

Citation

He, Hao, et al. "Biocompatible Conductive Polymers With High Conductivity and High Stretchability." ACS Applied Materials & Interfaces, vol. 11, no. 29, 2019, pp. 26185-26193.
He H, Zhang L, Guan X, et al. Biocompatible Conductive Polymers with High Conductivity and High Stretchability. ACS Appl Mater Interfaces. 2019;11(29):26185-26193.
He, H., Zhang, L., Guan, X., Cheng, H., Liu, X., Yu, S., ... Ouyang, J. (2019). Biocompatible Conductive Polymers with High Conductivity and High Stretchability. ACS Applied Materials & Interfaces, 11(29), pp. 26185-26193. doi:10.1021/acsami.9b07325.
He H, et al. Biocompatible Conductive Polymers With High Conductivity and High Stretchability. ACS Appl Mater Interfaces. 2019 Jul 24;11(29):26185-26193. PubMed PMID: 31257845.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biocompatible Conductive Polymers with High Conductivity and High Stretchability. AU - He,Hao, AU - Zhang,Lei, AU - Guan,Xin, AU - Cheng,Hanlin, AU - Liu,Xixia, AU - Yu,Suzhu, AU - Wei,Jun, AU - Ouyang,Jianyong, Y1 - 2019/07/11/ PY - 2019/7/2/pubmed PY - 2019/7/2/medline PY - 2019/7/2/entrez KW - -sorbitol KW - PEDOT KW - biocompatible KW - conducting polymer KW - plasticizer KW - stretchable electronics SP - 26185 EP - 26193 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 29 N2 - Stretchable electronic materials have drawn strong interest due to their important applications in areas such as bioelectronics, wearable devices, and soft robotics. The stretchable electrode is an integral unit of stretchable systems. Intrinsically conductive polymers such as poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) can have high mechanical flexibility and good biocompatibility. However, their electrical conductivity and mechanical stretchability should be greatly improved for its applications as the stretchable electrode. Here, we report highly conductive and highly stretchable PEDOT:PSS by incorporating biocompatible d-sorbitol. d-Sorbitol can serve as both the secondary dopant and plasticizer for PEDOT:PSS. It can not only significantly improve the conductivity but also the stretchability. d-Sorbitol-PEDOT:PSS (s-PEDOT:PSS) can have a conductivity of >1000 S/cm, and the conductivity could be maintained at a strain up to 60%. The resistance of s-PEDOT:PSS remains almost constant during repeated stretching-releasing cycles. The mechanism for the stretchability improvement by d-sorbitol is ascribed to the softening of PSSH chains. d-Sorbitol can position among the PSSH chains and thus destructs the hydrogen bonds among the PSSH chains. This makes the conformational change of the PSSH chains under stress become easy and thus increases the mechanical flexibility of PEDOT:PSS. This conductivity is the highest for biocompatible intrinsically conductive polymers with high stretchability. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31257845/Biocompatible_Conductive_Polymers_with_High_Conductivity_and_High_Stretchability_ L2 - https://dx.doi.org/10.1021/acsami.9b07325 DB - PRIME DP - Unbound Medicine ER -