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- W2893423198 abstract "Along with the advent of supramolecular chemistry, research on fullerene receptors based on noncovalent bonding interactions has attracted a lot of attention. Here, we present the design and synthesis of a cationic molecular cage: a cyclophane composed of two tetraphenylporphyrins, bridged face-to-face by four viologen units in a rhomboid prismatic manner. The large cavity inside the cage, as well as the favorable donor–acceptor interactions between the porphyrin panels and the fullerene guests, enables the cage to be an excellent fullerene receptor. The 1:1 host–guest complexes formed between the cage and both C60 and C70 were characterized in solution by HRMS and NMR, UV–vis and fluorescence spectroscopies, and confirmed in the solid state by single-crystal X-ray diffraction analyses. The results from solution studies reveal that the cage has a much stronger binding for C70 than for C60, resulting in a selective extraction of C70 from a C60-enriched fullerene mixture (C60/C70 = 10/1), demonstrating the potential of the cage as an attractive receptor for fullerene separation." @default.
- W2893423198 created "2018-10-05" @default.
- W2893423198 creator A5001256912 @default.
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- W2893423198 date "2018-09-28" @default.
- W2893423198 modified "2023-10-06" @default.
- W2893423198 title "Selective Extraction of C<sub>70</sub> by a Tetragonal Prismatic Porphyrin Cage" @default.
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