Affinity Ionic Liquids for Chemoselective Gas Sensing

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Albert ChangYen-Ho Chu

Abstract

Selective gas sensing is of great importance for applications in health, safety, military, industry and environment. Many man-made and naturally occurring volatile organic compounds (VOCs) can harmfully affect human health or cause impairment to the environment. Gas analysis based on different principles has been developed to convert gaseous analytes into readable output signals. However, gas sensors such as metal-oxide semiconductors suffer from high operating temperatures that are impractical and therefore have limited its applications. The cost-effective quartz crystal microbalance (QCM) device represents an excellent platform if sensitive, selective and versatile sensing materials were available. Recent advances in affinity ionic liquids (AILs) have led them to incorporation with QCM to be highly sensitive for real-time detection of target gases at ambient temperature. The tailorable functional groups in AIL structures allow for chemoselective reaction with target analytes for single digit parts-per-billion detection on mass-sensitive QCM. This structural diversity makes AILs promising for the creation of a library of chemical sensor arrays that could be designed to efficiently detect gas mixtures simultaneously as a potent...Continue Reading

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Citations

Jan 2, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hsin-Yi Li, Yen-Ho Chu

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Methods Mentioned

BETA
quartz crystal microbalance
infrared spectroscopy

Software Mentioned

DOAS
IDT
PTR
SIFT
EQCM

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