Water-Regulated Evolution of Inversion, Reinversion, and Amplification of Circularly Polarized Luminescence of Supramolecular Organogels Based on Glutamide-Cyanostilbene Amphiphile.

Water incorporated with supramolecular building blocks in organic solvents can play a key role in the circularly polarized luminescence (CPL) inversion and amplification of supramolecular assemblies. Herein, we demonstrate that fine-tuning the water content regulated the assembly structure evolution and made the circular dichroism and CPL sign of the system undergo intriguing inversion, reinversion, and amplification processes based on a unique and interesting glutamide-cyanostilbene system, as supported by morphology, spectroscopic observations, and time-dependent density functional theory calculation.

4-[3-(Bromo-meth-yl)benz-yloxy]-3-methoxy-benzaldehyde.

In the title compound, C(16)H(15)BrO(3), the dihedral angle between the mean planes of the two benzene rings is 76.64 (2)°. In the crystal structure, there are weak π-π stacking inter-actions, with a centroid-centroid distance of 3.724 (3) Å, as well as an inter-molecular C⋯Br distance [3.495 (2) Å] which is slightly less than the sum of the van der Waals radii for these atoms.