Tuning the Fluorescence in Dynamic Covalent Bonded Liquid Crystals
Meik Blanke, Thorben Neumann, Matias Ezequiel Gutierrez Suburu, Oleg Prymak, Christoph Wölper, Cristian A. Strassert, Michael Giese
Abstract
A series of emissive liquid crystalline materials based on salicylidene derivatives is reported and investigated with respect to their thermoresponsive and mechanochromic properties. Single-crystal analysis and temperature-dependent powder X-ray diffraction measurements allowed us to correlate the intermolecular organization of the mesogens with thermoresponsive changes in the fluorescence behavior. As a proof-of-principle study, we employed the dynamics of the imine bond in transamination reactions for postsynthetic tuning of the fluorescence behavior as a further step toward the development of adaptive materials.