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The as\u2010fabricated P5A\u2010C10\u2010OAc column achieved improved column efficiency of 4270 plates\/m and separation performance in contrast to the P5\u2010C10\u2010Br column. The P5A\u2010C10\u2010OAc column showed good separation performance for a wide range of analytes such as alkanes, bromoalkanes, ketones, fatty acid methyl esters, aldehydes, alcohols, halobenzenes, anilines, phenols, naphthalenes, and showed sharp and symmetrical peak shapes for analytes that are liable to peak\u2010tailing in GC analysis. As testified by the challenging isomer mixtures (bromonitrobenzene, chloronitrobenzene, bromobenzaldehyde, chlorobenzaldehyde, nitrobenzaldehyde), the P5A\u2010C10\u2010OAc column exhibited comprehensively higher separation capability than the P5A\u2010C10\u2010Br, P5A\u2010C10 and commercial HP\u201035 columns. This work demonstrates the great potential of pillararene\u2010based stationary phases as a new type of stationary phases for GC separations.<\/jats:p>","DOI":"10.1002\/cbdv.202301795","type":"journal-article","created":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T04:34:28Z","timestamp":1706157268000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["High Selectivity of A Novel Pillar[5]arene with Ester Units as a Gas Chromatographic Stationary Phase toward Aromatic Isomers"],"prefix":"10.1002","volume":"21","author":[{"given":"Wen","family":"Li","sequence":"first","affiliation":[{"name":"Liaoning Province Professional and Technical Innovation Center for Fine Chemical Engineering of Aromatics Downstream School of Petrochemical Engineering Shenyang University of Technology  Liaoyang 111003 P. R. 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