Optically active copolyesters based on axially dissymmetric 1,1 prime -binaphthalene-2,2 prime -diyl units

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作者
Chen, Chuan-Fu [1 ]
Ai, Min [1 ]
Li, Zhong [1 ]
Liu, Hong-Wei [1 ]
Gong, Ai-Jun [1 ]
Xi, Fu [1 ]
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[1] Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
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Optically active copolyesters based on axially dissymmetric 1,1 prime -binaphthalene-2,2 prime -diyl units have been prepared and characterized by specific rotation, 13C-NMR and CD spectra. The results show that the rotation signs of tribasic copolyesters or the mixture of corresponding homopolyesters obey a three dimensional quadrant pattern. The composition of the copolyesters was determined from 13C-NMR spectra to be triad sequence distributions and corresponding with the ratio by feed.
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页码:443 / 447
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