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Physically Cross-Linked Homopolymer Ion Gels for High Performance Electrolyte-Gated Transistors

Physically Cross-Linked Homopolymer Ion Gels for High Performance Electrolyte-Gated Transistors

Hae Min Yang, Yeong Kwan Kwon, Soo Byoung Lee, Sangwon Kim, Kihyon Hong, Keun Hyung Lee

ACS Appl Mater Interfaces. 2017 Mar 15;9(10):8813-8818.

PMID: 28155274

Abstract:

A new type of physically cross-linked solid polymer electrolyte was demonstrated by using a poly(vinylidene fluoride) (PVDF) homopolymer in a room-temperature ionic liquid. The physical origins of gelation, specific capacitance, ionic conductivity, mechanical property, and capacitive charge modulation in organic thin-film electrochemical transistors were investigated systematically. Gelation occurs through bridging phase-separated homopolymer crystals by polymer chains in the composite electrolyte, thereby forming a rubbery network. The resulting homopolymer ion gels are able to accommodate both outstanding electrical (ionically conductive and capacitive) and mechanical (flexible and free-standing) characteristics of the component ionic liquid and the structuring polymer, respectively. These ion gels were successfully applied to organic thin-film transistors as high-capacitance gate dielectrics. Therefore, these results provide an effective route to generate a highly conductive rubbery polymer electrolyte that can be used in widespread electronic and electrochemical devices.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS77420	EL-HPE high performance electrolyte			Price

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