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Chemistry

Title:		Triptycene-Roofed Quinoxaline Cavitands for the Supramolecular Detection of BTEX in Air
Author(s):		Bertani F; Riboni N; Bianchi F; Brancatelli G; Sterner ES; Pinalli R; Geremia S; Swager TM; Dalcanale E;
Address:		"Department of Chemistry, University of Parma, Parco Area delle Scienze 17A, Parma, 43124, Italy. Department of Chemistry, Massachusetts Institute of Technology, 77 Mass Avenue, 02139, Cambridge, MA, USA. Department of Chemical and Pharmaceutical Sciences, University of Trieste, via L. Giorgeri 1, 34127, Trieste, Italy. Department of Chemistry, Massachusetts Institute of Technology, 77 Mass Avenue, 02139, Cambridge, MA, USA. tswager@mit.edu. Department of Chemistry, University of Parma, Parco Area delle Scienze 17A, Parma, 43124, Italy. enrico.dalcanale@unipr.it"
Journal Title:		Chemistry
Year:		2016
Volume:		20160113
Issue:		10
Page Number:		3312 - 3319
DOI:		10.1002/chem.201504229
ISSN/ISBN:		1521-3765 (Electronic) 0947-6539 (Linking)
Abstract:		"Two novel triptycene quinoxaline cavitands (DiTriptyQxCav and MonoTriptyQxCav) have been designed, synthesized, and applied in the supramolecular detection of benzene, toluene, ethylbenzene, and xylenes (BTEX) in air. The complexation properties of the two cavitands towards aromatics in the solid state are strengthened by the presence of the triptycene moieties at the upper rim of the tetraquinoxaline walls, promoting the confinement of the aromatic hydrocarbons within the cavity. The two cavitands were used as fiber coatings for solid-phase microextraction (SPME) BTEX monitoring in air. The best performances in terms of enrichment factors, selectivity, and LOD (limit of detection) values were obtained by using the DiTriptyQxCav coating. The corresponding SPME fiber was successfully tested under real urban monitoring conditions, outperforming the commercial divinylbenzene-Carboxen-polydimethylsiloxane (DVB-CAR-PDMS) fiber in BTEX adsorption"
Keywords:		cavitands environmental monitoring host-guest systems solid-phase microextraction volatile organic compounds;
Notes:		"PublisherBertani, Federico Riboni, Nicolo Bianchi, Federica Brancatelli, Giovanna Sterner, Elizabeth S Pinalli, Roberta Geremia, Silvano Swager, Timothy M Dalcanale, Enrico eng Germany 2016/01/15 Chemistry. 2016 Mar 1; 22(10):3312-3319. doi: 10.1002/chem.201504229. Epub 2016 Jan 13"