Novel Means of Controlling the Solid-State Circular Dichroism Property in a Supramolecular Organic Fluorophore Comprising 4-[2-(Methylphenyl)ethynyl]benzoic Acid by Varying the Position of the Methyl Substituent

The solid-state circular dichroism (CD) of a 4-[2-(methylphenyl)­ethynyl]­benzoic acid/amine supramolecular organic fluorophore can be controlled by changing the position of the methyl substituent of the methylphenylethynyl unit on the achiral 4-[2-(methylphenyl)­ethynyl]­benzoic acid component molecule, instead of changing the chirality of the chiral amine component molecule.