Light-Activated Hybrid Nanocomposite Film for Water and Oxygen Sensing

Eric S. Muckley; Liam Collins; Anton V. Ievlev; Xinyi Ye; Kim Kisslinger; Bobby G. Sumpter; Nickolay V. Lavrik; Chang Yong Nam; Ilia N. Ivanov

doi:10.1021/acsami.8b08072

Light-Activated Hybrid Nanocomposite Film for Water and Oxygen Sensing

Eric S. Muckley, Liam Collins, Anton V. Ievlev, Xinyi Ye, Kim Kisslinger, Bobby G. Sumpter, Nickolay V. Lavrik, Chang Yong Nam, Ilia N. Ivanov

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Oxygen and water vapor sensing properties are investigated in metal-oxide-hybrid polymer nanocomposite thin films generated by infiltration synthesis, which incorporates molecular ZnO into the matrix of SU-8 polymer, a common negative-tone photoresist. The hybrid thin films display 20-fold higher gravimetric responses to oxygen and water vapor than those of control ZnO thin films in the dark. An additional 50-500% enhanced responses are detected under UV irradiation. The overall enhanced gravimetric response in the hybrid film is attributed to the ZnO molecules distributed in the polymer matrix, whereas the UV enhancement is explained by the light-induced, reversible generation of hydrophilic fluoroantimonic acid from triarylsulfonium hexafluoroantimonate photoacids, which leads to the increased surface potential and adsorption energies for oxygen and water. A gravimetric sensor based on a series of ZnO-infiltrated SU-8 films under UV excitation enables 96% accurate classification of water and oxygen environment with sub 10 mTorr detection limits. The results demonstrate UV-induced fully reversible surface hydrophilicity of ZnO/SU-8 hybrid nanocomposites.

Original language	English
Pages (from-to)	31745-31754
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	37
DOIs	https://doi.org/10.1021/acsami.8b08072
State	Published - Sep 19 2018

Funding

*E-mail: [email protected] *E-mail: [email protected]. ORCID Eric S. Muckley: 0000-0001-7114-5424 Anton V. Ievlev: 0000-0003-3645-0508 Bobby G. Sumpter: 0000-0001-6341-0355 Chang-Yong Nam: 0000-0002-9093-4063 Ilia N. Ivanov: 0000-0002-6726-2502 Funding This manuscript was authored by UT-Battelle, LLC under Contract DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/ downloads/doe-public-access-plan). Notes The authors declare no competing financial interest.

Funders	Funder number
U.S. Department of Energy

Keywords

QCM
SU-8
ZnO
atomic layer deposition
hybrid nanocomposite
infiltration synthesis

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10.1021/acsami.8b08072

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title = "Light-Activated Hybrid Nanocomposite Film for Water and Oxygen Sensing",

abstract = "Oxygen and water vapor sensing properties are investigated in metal-oxide-hybrid polymer nanocomposite thin films generated by infiltration synthesis, which incorporates molecular ZnO into the matrix of SU-8 polymer, a common negative-tone photoresist. The hybrid thin films display 20-fold higher gravimetric responses to oxygen and water vapor than those of control ZnO thin films in the dark. An additional 50-500% enhanced responses are detected under UV irradiation. The overall enhanced gravimetric response in the hybrid film is attributed to the ZnO molecules distributed in the polymer matrix, whereas the UV enhancement is explained by the light-induced, reversible generation of hydrophilic fluoroantimonic acid from triarylsulfonium hexafluoroantimonate photoacids, which leads to the increased surface potential and adsorption energies for oxygen and water. A gravimetric sensor based on a series of ZnO-infiltrated SU-8 films under UV excitation enables 96% accurate classification of water and oxygen environment with sub 10 mTorr detection limits. The results demonstrate UV-induced fully reversible surface hydrophilicity of ZnO/SU-8 hybrid nanocomposites.",

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author = "Muckley, {Eric S.} and Liam Collins and Ievlev, {Anton V.} and Xinyi Ye and Kim Kisslinger and Sumpter, {Bobby G.} and Lavrik, {Nickolay V.} and Nam, {Chang Yong} and Ivanov, {Ilia N.}",

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AU - Sumpter, Bobby G.

AU - Lavrik, Nickolay V.

AU - Nam, Chang Yong

AU - Ivanov, Ilia N.

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N2 - Oxygen and water vapor sensing properties are investigated in metal-oxide-hybrid polymer nanocomposite thin films generated by infiltration synthesis, which incorporates molecular ZnO into the matrix of SU-8 polymer, a common negative-tone photoresist. The hybrid thin films display 20-fold higher gravimetric responses to oxygen and water vapor than those of control ZnO thin films in the dark. An additional 50-500% enhanced responses are detected under UV irradiation. The overall enhanced gravimetric response in the hybrid film is attributed to the ZnO molecules distributed in the polymer matrix, whereas the UV enhancement is explained by the light-induced, reversible generation of hydrophilic fluoroantimonic acid from triarylsulfonium hexafluoroantimonate photoacids, which leads to the increased surface potential and adsorption energies for oxygen and water. A gravimetric sensor based on a series of ZnO-infiltrated SU-8 films under UV excitation enables 96% accurate classification of water and oxygen environment with sub 10 mTorr detection limits. The results demonstrate UV-induced fully reversible surface hydrophilicity of ZnO/SU-8 hybrid nanocomposites.

AB - Oxygen and water vapor sensing properties are investigated in metal-oxide-hybrid polymer nanocomposite thin films generated by infiltration synthesis, which incorporates molecular ZnO into the matrix of SU-8 polymer, a common negative-tone photoresist. The hybrid thin films display 20-fold higher gravimetric responses to oxygen and water vapor than those of control ZnO thin films in the dark. An additional 50-500% enhanced responses are detected under UV irradiation. The overall enhanced gravimetric response in the hybrid film is attributed to the ZnO molecules distributed in the polymer matrix, whereas the UV enhancement is explained by the light-induced, reversible generation of hydrophilic fluoroantimonic acid from triarylsulfonium hexafluoroantimonate photoacids, which leads to the increased surface potential and adsorption energies for oxygen and water. A gravimetric sensor based on a series of ZnO-infiltrated SU-8 films under UV excitation enables 96% accurate classification of water and oxygen environment with sub 10 mTorr detection limits. The results demonstrate UV-induced fully reversible surface hydrophilicity of ZnO/SU-8 hybrid nanocomposites.

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Light-Activated Hybrid Nanocomposite Film for Water and Oxygen Sensing

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