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First, we prepared vase\u2010shaped molecular baskets <jats:bold>4<\/jats:bold>\u2013<jats:bold>7<\/jats:bold>. The baskets comprise a benzene base fused to three bicycle[2.2.1]heptane rings that extend into phthalimide (<jats:bold>4<\/jats:bold>), naphthalimide (<jats:bold>6<\/jats:bold>), and anthraceneimide sides (<jats:bold>7<\/jats:bold>), each carrying a dimethoxyethane acetal group. In the presence of catalytic trifluoroacetic acid (TFA), the acetals at top of <jats:bold>4<\/jats:bold>, <jats:bold>6<\/jats:bold> and <jats:bold>7<\/jats:bold> change into aliphatic aldehydes followed by their intramolecular cyclization into 1,3,5\u2010trioxane (<jats:sup>1<\/jats:sup>H NMR spectroscopy). Such ring closure is nearly a quantitative process that furnishes differently sized capsularenes <jats:bold>1<\/jats:bold> (0.7\u00d70.9\u2005nm), <jats:bold>8<\/jats:bold> (0.7\u00d71.1\u2005nm;) and <jats:bold>9<\/jats:bold> (0.7\u00d71.4\u2005nm;) characterized by X\u2010Ray crystallography, microcrystal electron diffraction, UV\/Vis, fluorescence, cyclic voltammetry, and thermogravimetry. With exceptional rigidity, unique topology, great thermal stability, and perhaps tuneable optoelectronic characteristics, capsularenes hold promise for the construction of novel organic electronic devices.<\/jats:p>","DOI":"10.1002\/anie.202211304","type":"journal-article","created":{"date-parts":[[2022,8,18]],"date-time":"2022-08-18T18:54:27Z","timestamp":1660848867000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Closed Aromatic Tubes\u2014Capsularenes"],"prefix":"10.1002","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1216-3950","authenticated-orcid":false,"given":"Radoslav Z.","family":"Pavlovi\u0107","sequence":"first","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Zhiquan","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tyler J.","family":"Finnegan","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christopher A.","family":"Waudby","sequence":"additional","affiliation":[{"name":"University College London UCL School of Pharmacy  London WC1N 1AX UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiuze","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vageesha W. Liyana","family":"Gunawardana","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xingrong","family":"Zhu","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Curt M.","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Taylor","family":"Hamby","sequence":"additional","affiliation":[{"name":"Department of Chemistry &amp; Biochemistry The Ohio State University  100W. 18<sup>th<\/sup> Avenue Columbus OH 43210 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