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Nanosized Carbon Macrocycles Based on a Planar Chiral Pseudo Meta-[2.2]Paracyclophane. 2022
Jing He, and
Mohan Yu, and
Maofu Pang, and
Yanqing Fan, and
Zhe Lian, and
Ying Wang, and
Wenguang Wang, and
Yajun Liu, and
Hua Jiang
College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
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.
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