Ricerc@Sapienza

We studied how changing the anion affects the self-assembly of three diimidazolium salts bearing a
perylene bisimide spacer. In particular we used [BF4
] and [NTf2
] based salts together with a mixed salt
bearing both [I] and [BF4
] anions. Thermal as well as concentration and temperature dependent
spectroscopic investigations revealed that changing the anion impacts on solid state and solution aggregation,
leading to articulate thermotropic behaviors and contrasting solvent effects, respectively. We

As an extension of our studies on the multifaceted properties of C-alkylated resorc[4]arenes, we planned to immobilize on a solid support resorc[4]arenes with C11-long side chains in the lower rim. To this purpose, we synthesized two conformationally diverse resorc[4]arenes containing a bromoundecyl moiety in the four axial pendants. The cone stereoisomer 6a (30% yield) was selected for the reaction with an aminopropylated silica gel (APSG) obtained from spherical Kromasil Si 100, 5 μm particles, to give the corresponding immobilized SP-C11-resorc[4]arene system.