Microwave-assisted synthesis of porphyrin conjugated microporous polymers for microextraction of volatile organic acids in tobaccos

Journal of Chromatography. a
Yi PengLing Xia

Abstract

Conjugated microporous polymers (CMPs) with permanent microporosity and extended p-conjugated skeletons have recently shown the fascinating application in separation and enrichment. In this report, porphyrin CMP that possessed microporous structure and nitrogen-rich pyrrole building blocks was successfully synthesized by microwave-assisted method. Then, a novel coating based on porphyrin CMP was fabricated on silica fiber for efficient enrichment volatile organic acids (VOAs). The simulation showed the coating exhibited strong interaction with volatile organic acids based on charge transfer interaction, hydrogen bond and size effect. Hence, we proposed a method for determination of volatile organic acids in tobaccos by headspace solid-phase microextraction (HS-SPME) with porphyrin CMP coating by gas chromatography-mass spectrometry. The results showed that the coating provided high enrichment factors for VOAs ranging from 66,657 to 133,970 and low limits of detection from 4.6 to 22 ng/L. A good linearity was observed for propionic acid and crotonic acid ranging from 0.050 to 8.0 μg/L, 2-methylheptanoic acid ranging from 0.063 to 1.5 μg/L, others ranging from 0.025 to 3.0 μg/L with the determination coefficient (R2) between 0.99...Continue Reading

Citations

Jul 4, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Aurel TăbăcaruRodica Mihaela Dinică
Jan 29, 2020·Chemical Reviews·Jet-Sing M Lee, Andrew I Cooper
Nov 27, 2019·Analytical Chemistry·Ling XiaGongke Li
Oct 5, 2021·Chemistry, an Asian Journal·Jing DuBien Tan

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