Striking Correlation between the Unusual Trigonal Crystal Packing and the Ability to Self-Assemble into Nanofibers of 2,3-Di-n-alkyloxyanthracenes

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• 作者：Alexandre G. L. Olive ; Guillaume Raffy ; Hassan Allouchi ; Jean-Michel Lger ; Andr Del Guerzo ; Jean-Pierre Desvergne
• 刊名：Langmuir
• 出版年：2009
• 出版时间：August 4, 2009
• 年：2009
• 卷：25
• 期：15
• 页码：8606-8614
• 全文大小：1170K
• 年卷期：v.25,no.15(August 4, 2009)
• ISSN：1520-5827

文摘

The space group of the crystals of derivatives of 2,3-dialkoxyanthracenes is monoclinic P2₁/a (herringbone structure) with the linear ethyl or propyl chains but abruptly changes to the trigonal P or R space group for butyl to heptyl chains. Strikingly, this switch is correlated with the capacity of these compounds to self-assemble into nanofibers and organogels. Besides, compounds with a chain length exceeding seven carbon atoms could not be crystallized in accordance with the analysis of the projected crystal structure but are nevertheless excellent organogelators. The study of this series of compounds suggests a tight link between the molecular structure of the crystals and that of the organogels.