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Self-assembly of L-proline functional thermoresponsive double hydrophlic block copolymers for aldol reaction in water: the influence of POEGA block content

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Abstract

The self-assembly of L-proline functional thermoresponsive double hydrophlic block copolymers (DHBCs) can effectively catalyze aldol reaction in water. Considering the block content of copolymers influences the assemblies and catalytic activities, thermoresponsive DHBCs supported L-proline P(NIPAm-co-ProlA)-b-POEGA with different POEGA block content were prepared by reversible addition fragmentation chain transfer (RAFT) polymerization. The therm-triggered self-assemblies were investigated by dynamic light scattering (DLS) and transmission electron microscopy (TEM). Then, the resultant assemblies were used as catalysts for the aldol reaction with cyclohexanone and 4-nitrobenzaldehyde as substrates. The results indicated that P(NIPAm-co-ProlA)-b-POEGA with ca. 18 mol% of POEGA can form stable catalytic system, which maintained high selectivity and productivity of product, accompanied with satisfactory reusability.

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Funding

This work was financially supported by the National Nature Science Foundation of China (Grant No.21403151), the Natural Science Foundation of Shanxi Province (Grant No.201601D011032), the Natural Science Foundation for Young Scientists of Shanxi Province (Grant No. 201601D021045), and the Joint Postgraduate Training base Personnel Training Project of Shanxi Province (Grant No.2017JD17).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China

    Kuan Liu, Weiwei Xu, Qinya Wang, Yu Tang, Weibing Sheng & Yinghua Shen

  2. Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, China

    Lijuan Shi

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  1. Kuan Liu
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  2. Weiwei Xu
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  3. Qinya Wang
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  4. Yu Tang
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Correspondence to Yinghua Shen.

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Liu, K., Xu, W., Wang, Q. et al. Self-assembly of L-proline functional thermoresponsive double hydrophlic block copolymers for aldol reaction in water: the influence of POEGA block content. Colloid Polym Sci 296, 1109–1117 (2018). https://doi.org/10.1007/s00396-018-4327-6

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