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The Anion Binding Affinity Determines the Strength of Anion Specificities of Thermosensitive Polymers

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Abstract

In this work, we demonstrate that the strength of anion specificities of thermosensitive polymers is determined by the affinity of direct anion binding to the polymers. We have prepared a series of thermosensitive statistical copolymers with distinct thermoresponsive behaviors. The anions can specifically interact with the different types of thermosensitive polymers in very different strengths. A similar strength of specific anion effects on thermoresponsive behaviors can be observed at very different salt concentrations for the different types of thermosensitive polymers. A stronger anion binding to the thermosensitive polymers gives rise to a more obvious anion specificity and vice versa. The work presented here opens up opportunities for the application of ion binding affinity to modulate the strength of ion specificities of thermosensitive polymers.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 21873091, 21622405, 21574121 and 52033001), the Youth Innovation Promotion Association of CAS (No. Y201769), the National Synchrotron Radiation Laboratory (No. UN2018LHJJ), and the Fundamental Research Funds for the Central Universities (No. WK2480000007).

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  1. Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China

    Lei-Lei Lian, Si-Yuan Xu, Hai-Yang Yuan & Guang-Ming Liu

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  1. Lei-Lei Lian
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  2. Si-Yuan Xu
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Correspondence to Guang-Ming Liu.

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Lian, LL., Xu, SY., Yuan, HY. et al. The Anion Binding Affinity Determines the Strength of Anion Specificities of Thermosensitive Polymers. Chin J Polym Sci 39, 1351–1356 (2021). https://doi.org/10.1007/s10118-021-2633-9

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  • DOI: https://doi.org/10.1007/s10118-021-2633-9

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