Control of Self-Assembly of a 3-Hexen-1,5-diyne Derivative: Toward Soft Materials with an Aggregation-Induced Enhancement in Emission

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• 作者：Ana P茅rez ; Jos茅 Luis Serrano ; Teresa Sierra ; Alfredo Ballesteros ; Diana de Sa谩 ; Jos茅 Barluenga
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：June 1, 2011
• 年：2011
• 卷：133
• 期：21
• 页码：8110-8113
• 全文大小：783K
• 年卷期：v.133,no.21(June 1, 2011)
• ISSN：1520-5126

文摘

The supramolecular architectures of a fluorophore are controlled through the design of a conjugated polycatenar molecule, the self-assembly of which can be addressed toward a columnar liquid-crystalline phase and organogels. Thus, depending on the environmental conditions for self-assembly, compound CA9 organizes into an unprecedented hexagonal columnar mesophase in the condensed state, in which half a molecule constitutes the slice of the column, or into a rectangular mesomorphic-like organization in the presence of apolar solvents such as cyclohexane and dodecane, at a concentration in which fibers form and gelling conditions are fulfilled. In this Col_r-type arrangement, the organization within the columns depends on the solvent. All of the materials prepared show luminescence, and moreover, a remarkable 3-fold increase in fluorescence intensity was observed in going from the solution to the gel state.