{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T00:42:29Z","timestamp":1760229749176,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2022,6,27]],"date-time":"2022-06-27T00:00:00Z","timestamp":1656288000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Regione Emilia Romagna"},{"name":"\u201cDepartments of Excellence\u201d program of the Italian Ministry for Education, University and Research (MIUR, 2018\u20132022)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>The monitoring of benzene and other carcinogenic aromatic volatile compounds at the ppb level requires boosting both the selectivity and sensitivity of the corresponding sensors. A workable solution is the introduction in the devices of preconcentrator units containing molecular receptors. In particular, quinoxaline cavitands (QxCav) resulted in very efficient preconcentrator materials for the BTEX in air to the point that they have been successfully implemented in a commercial sensor. In this work, we report a highly efficient quinoxaline-based preconcentrator material, in which the intrinsic adsorption capacity of the QxCav has been maximized. The new material consists of silica particles covalently coated with a suitable functionalized QxCav derivative (QxCav@SiO2). In this way, all the cavities are exposed to the analyte flux, boosting the performance of the resulting preconcentration cartridge well above that of the pure QxCav. It is noteworthy that the preconcentrator adsorption capacity is independent of the relative humidity of the incoming air.<\/jats:p>","DOI":"10.3390\/nano12132204","type":"journal-article","created":{"date-parts":[[2022,6,28]],"date-time":"2022-06-28T00:07:02Z","timestamp":1656374822000},"page":"2204","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Cavitand Decorated Silica as a Selective Preconcentrator for BTEX Sensing in Air"],"prefix":"10.3390","volume":"12","author":[{"given":"Andrea","family":"Rozzi","sequence":"first","affiliation":[{"name":"Department of Chemistry, Life Sciences and Environmental Sustainability and INSTM UdR Parma, University of Parma, Parco Area delle Scienze 17\/A, 43124 Parma, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessandro","family":"Pedrini","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Life Sciences and Environmental Sustainability and INSTM UdR Parma, University of Parma, Parco Area delle Scienze 17\/A, 43124 Parma, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0000-8980","authenticated-orcid":false,"given":"Roberta","family":"Pinalli","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Life Sciences and Environmental Sustainability and INSTM UdR Parma, University of Parma, Parco Area delle Scienze 17\/A, 43124 Parma, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Enrico","family":"Cozzani","sequence":"additional","affiliation":[{"name":"PROAMBIENTE S.c.r.l., Via P. Gobetti 101, 40129 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivan","family":"Elmi","sequence":"additional","affiliation":[{"name":"CNR-IMM Bologna, Via P. Gobetti 101, 40129 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0431-0693","authenticated-orcid":false,"given":"Stefano","family":"Zampolli","sequence":"additional","affiliation":[{"name":"CNR-IMM Bologna, Via P. Gobetti 101, 40129 Bologna, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6964-788X","authenticated-orcid":false,"given":"Enrico","family":"Dalcanale","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Life Sciences and Environmental Sustainability and INSTM UdR Parma, University of Parma, Parco Area delle Scienze 17\/A, 43124 Parma, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"198","DOI":"10.1016\/j.snb.2012.10.004","article-title":"Gas phase micro-preconcentrators for benzene monitoring: A review","volume":"176","author":"Lahlou","year":"2013","journal-title":"Actuators B Chem."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1603","DOI":"10.1038\/bjc.2015.108","article-title":"Benzene exposure and risk of lymphohaematopoietic cancers in 25 000 offshore oil industry workers","volume":"112","author":"Stenehjem","year":"2015","journal-title":"Br. 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