Adjustability and Versatility of Molecular Packing Patterns in Asymmetric Coumarin Liquid Crystals Supramolecular Helical Column Structures.

Coumarin asymmetric multi‐chain liquid crystals (LCs) were synthesized using click reaction, with coumarin core and 1,2,3‐triazole dendritic wings on both sides. The properties of these LCs and the resulting gels were investigated using polarized optical microscopy (POM), differential scanning calorimetry (DSC), X‐ray diffraction (XRD), and scanning electron microscopy (SEM). These polycatenars demonstrate the ability to self‐assemble into columnar LCs phases, exhibiting p4 mm symmetry in their bulk states. In DMF solvent, ether compounds yield gels with notably more ordered, spherical flower‐like morphologies, while ester compounds produce gels that are less ordered and exhibit a nanosphere morphology. The findings indicate that the polarities of both the linkages and the solvents play a critical role in the formation of supramolecular nanostructures. Interestingly, the 2 was proved as promising imaging probe for latent fingerprints (LFPs) and fluorescent fingerprints images were obtained with high‐resolution, which showed potential practical application for LFPs detection. Additionally, LCs compounds are used as dopants to modify the poly(3,4‐ethylenedioxythiophene):polystyrene (PEDOT:PSS) injection layer of Organic silicone‐based heterojunction solar cells (HSCs). Finally, Density functional theory (DFT) calculations are performed to theoretically study such as geometric structure, frontier molecular orbitals, molecular electrostatic potential, and dipole moment. [ABSTRACT FROM AUTHOR]