title: Control of self-assembly of a 3-hexen-1,5-diyne derivative: toward soft materials with an aggregation-induced enhancement in emission.
abstract: 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.
authors.affiliation: Instituto de Nanociencia de Aragón (INA), Química Orgánica, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Pérez
authors.forename: José Luis
authors.initials: JL
authors.lastname: Serrano
authors.forename: Teresa
authors.initials: T
authors.lastname: Sierra
authors.forename: Alfredo
authors.initials: A
authors.lastname: Ballesteros
authors.forename: Diana
authors.initials: D
authors.lastname: de Saá
authors.forename: José
authors.initials: J
authors.lastname: Barluenga