Nanosized Carbon Macrocycles Based on a Planar Chiral Pseudo <i>Meta</i>‐[2.2]Paracyclophane
Jing He, Mohan Yu, Maofu Pang, Yanqing Fan, Zhe Lian, Ying Wang, Wenguang Wang, Ya‐Jun Liu, Hua Jiang
Abstract
Abstract Structural designs combining cycloparaphenylenes (CPPs) backbone with planar chiral [2.2]paracyclophane ([2.2]PCP) lead to optical‐active chiral macrocycles with intriguing properties. X‐ray crystal analysis revealed aesthetic necklace‐shaped structures and size‐dependent packages with long‐range channels. The macrocycles exhibit unique photophysical properties with high fluorescence quantum yield of up to 82 %, and the fluorescent color varies with ring size. In addition, size‐dependent chiroptical properties with moderately large CPL dissymmetry factor of 10 −3 and CPL brightness in the range of 30–40 M −1 cm −1 were observed.
Topics & Concepts
PlanarFluorescenceQuantum yieldMaterials scienceRing (chemistry)BrightnessCarbon fibersRange (aeronautics)Yield (engineering)CrystallographyChemistryOpticsOrganic chemistryPhysicsComputer scienceComposite materialComputer graphics (images)Composite numberSynthesis and Properties of Aromatic CompoundsLuminescence and Fluorescent MaterialsAxial and Atropisomeric Chirality Synthesis