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Nanosized Carbon Macrocycles Based on a Planar Chiral Pseudo Meta-[2.2]Paracyclophane |
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| Authors: | Jing He Mohan Yu Maofu Pang Yanqing Fan Zhe Lian Dr Ying Wang Prof Wenguang Wang Prof Yajun Liu Prof Hua Jiang |
| Institution: | 1. College of Chemistry, Beijing Normal University, Beijing, 100875 P. R. China;2. College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, 116029 P. R. China;3. School of Chemistry and Chemical Engineering, Shandong University, Jinan, 252100 P. R. China |
| 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. |
| Keywords: | [2 2]paracyclophane chiral carbon macrocycle circularly polarized luminescence cycloparaphenylenes planar chirality |