Encapsulated or Not Encapsulated? Ammonium Salts Can Be Encapsulated in Hexameric Capsules of Pyrogallol[4]arene

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• 作者：Shani Yariv-Shoushan ; Yoram Cohen
• 刊名：Organic Letters
• 出版年：2016
• 出版时间：March 4, 2016
• 年：2016
• 卷：18
• 期：5
• 页码：936-939
• 全文大小：229K
• ISSN：1523-7052

文摘

Tetraalkylammonium salts were found, contrary to literature reports, to be encapsulated into hexameric capsules of pyrogallol[4]arene in benzene solution. The guest affinity depended on the length of the alkyl chain, the counteranion, the solvent used, the ammonium concentration, and most importantly, the pyrogallol[4]arene to ammonium salt ratio. At high ammonium salt to pyrogallol[4]arene ratios no encapsulation was observed, presumably since the high salt destabilized the formed hexamers.