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X\u2010ray single crystal diffraction reveals the presence of Cl\u22c5\u22c5\u22c5C=O interactions in CH<jats:sub>2<\/jats:sub>Cl<jats:sub>2<\/jats:sub>\u2282<jats:bold>1<\/jats:bold> host\u2010guest complex and multiple intermolecular C=O\u22c5\u22c5\u22c5C=O interactions between molecules <jats:bold>1<\/jats:bold> in crystalline state. The intermolecular C=O\u22c5\u22c5\u22c5C=O interactions as attractive driving force led to unprecedented self\u2010assembly of nanotube with diameter around 1.4\u2005nm and inner surface engineered by aromatic rings. SEM and TEM images of the self\u2010assembly of <jats:bold>1<\/jats:bold> demonstrated temperature\u2010dependent morphologies which allows the observation of spheres at 25\u2009\u00b0C and rods at 0\u2009\u00b0C, respectively. XRD analysis indicated consistent hexagonal patterns in the self\u2010assembly and single crystal lattice, indicating the nanotubes driven by C=O\u22c5\u22c5\u22c5C=O interactions constitute the basic structural architectures of both aggregates. The nanoscopic tubes (pores) formed in the rodlike single crystal engendering the separation of moving dyes were preliminarily investigated by a single\u2010crystal chromatography and crystal\u2010packed column chromatography.<\/jats:p>","DOI":"10.1002\/chem.202203485","type":"journal-article","created":{"date-parts":[[2022,11,29]],"date-time":"2022-11-29T12:44:19Z","timestamp":1669725859000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Intermolecular n\u2192\u03c0* Interactions Based on a Tailored Multicarbonyl\u2010Containing Macrocycle"],"prefix":"10.1002","volume":"29","author":[{"given":"Jun","family":"Zhu","sequence":"first","affiliation":[{"name":"Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences  Beijing 100190 P. R. China"},{"name":"University of Chinese Academy of Sciences  Beijing 100049 P. R. 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