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Two hybrid materials with different nucleophilic species (bromide and iodide) have been prepared and characterized by means of elemental analysis, <jats:sup>13<\/jats:sup>C and <jats:sup>29<\/jats:sup>Si solid\u2010state NMR spectroscopy, thermogravimetric analysis and IR spectroscopy. The solids were tested as the sole catalyst under metal\u2010 and solvent\u2010free reaction conditions showing full selectivity toward the formation of cyclic carbonates. High turnover number (TON) and productivity values, up to 5502 and 1081 respectively for glycidol conversion at 100\u2009\u00b0C and up to 4942 and 1122 for epichlorohydrin conversion at 150\u2009\u00b0C after 3\u2005h, were obtained. Such outstanding productivity values were ascribed to the optimal organic\/inorganic (i.\u2009e., imidazolium moiety\/POSS support) weight ratio. The recyclability of the materials was successfully verified for five consecutive runs allowing their consideration as promising candidates for continuous flow technologies.<\/jats:p>","DOI":"10.1002\/cplu.201900408","type":"journal-article","created":{"date-parts":[[2019,8,28]],"date-time":"2019-08-28T02:44:20Z","timestamp":1566960260000},"page":"1536-1543","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Efficient Conversion of Carbon Dioxide by Imidazolium\u2010Based Cross\u2010Linked Nanostructures Containing Polyhedral Oligomeric Silsesquioxane (POSS) Building Blocks"],"prefix":"10.1002","volume":"84","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8348-0764","authenticated-orcid":false,"given":"Carla","family":"Calabrese","sequence":"first","affiliation":[{"name":"Department of Biological, Chemical and Pharmaceutical Sciences and Technologies University of Palermo  Viale delle Scienze, Ed. 17 90128 Palermo 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