Highly stable organic polymer field-effect transistor sensor for selective detection in the marine environment

Oren Knopfmacher, Mallory L. Hammock, Anthony L. Appleton, Gregor Schwartz, Jianguo Mei, Ting Lei, Jian Pei and Zhenan Bao ()
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Oren Knopfmacher: Stanford University
Mallory L. Hammock: Stanford University
Anthony L. Appleton: Stanford University
Gregor Schwartz: Stanford University
Jianguo Mei: Stanford University
Ting Lei: Beijing National Laboratory for Molecular Sciences, the Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University
Jian Pei: Beijing National Laboratory for Molecular Sciences, the Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University
Zhenan Bao: Stanford University

Nature Communications, 2014, vol. 5, issue 1, 1-9

Abstract: Abstract In recent decades, the susceptibility to degradation in both ambient and aqueous environments has prevented organic electronics from gaining rapid traction for sensing applications. Here we report an organic field-effect transistor sensor that overcomes this barrier using a solution-processable isoindigo-based polymer semiconductor. More importantly, these organic field-effect transistor sensors are stable in both freshwater and seawater environments over extended periods of time. The organic field-effect transistor sensors are further capable of selectively sensing heavy-metal ions in seawater. This discovery has potential for inexpensive, ink-jet printed, and large-scale environmental monitoring devices that can be deployed in areas once thought of as beyond the scope of organic materials.

Date: 2014
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DOI: 10.1038/ncomms3954

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