Metal-directed synthesis of quadruple-stranded helical Eu(<scp>iii</scp>) molecular switch: a significant improvement in photocyclization quantum yield
Zhang Yuan, Yanyan Zhou, Ting Gao, Peng‐Fei Yan, Hongfeng Li
Abstract
The self-assembly of a quadruple-stranded Eu(iii) helicate induces the conformation transformation of a DAE-based photochromic ligand from parallel to antiparallel, which brings a significant improvement in the photocyclization quantum yield (Φo-c) as compared with the free ligand. Furthermore, the photocontrolled open- and closed-rings of the ligand realized a reversible modulation toward Eu3+ center emission.
Topics & Concepts
Yield (engineering)Quantum yieldChemistryMetalQuantumCrystallographyStereochemistryNanotechnologyCombinatorial chemistryPhysicsMaterials scienceOrganic chemistryQuantum mechanicsMetallurgyFluorescenceLuminescence and Fluorescent MaterialsMolecular Sensors and Ion DetectionSupramolecular Chemistry and Complexes