Hierarchical Superstructures by Combining Crystallization-Driven and Molecular Self-Assembly.
Hierarchical Superstructures by Combining Crystallization-Driven and Molecular Self-Assembly.
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DOI：
10.1002/anie.202105787
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发表时间：
2021-09-27
期刊：
影响因子：
--
通讯作者：
Schmidt HW
中科院分区：
文献类型：
--
作者：
Frank A;Hils C;Weber M;Kreger K;Schmalz H;Schmidt HW
Combining the unique corona structure of worm‐like patchy micelles immobilized on a polymer fiber with the molecular self‐assembly of 1,3,5‐benzenetricarboxamides (BTAs) leads to hierarchical superstructures with a fir‐tree‐like morphology. For this purpose, worm‐like patchy micelles bearing pendant, functional tertiary amino groups in one of the corona patches were prepared by crystallization‐driven self‐assembly and immobilized on a supporting polystyrene fiber by coaxial electrospinning. The obtained patchy fibers were then immersed in an aqueous solution of a tertiary amino‐functionalized BTA to induce patch‐mediated molecular self‐assembly to well‐defined fir‐tree‐like superstructures upon solvent evaporation. Interestingly, defined superstructures are obtained only if the pendant functional groups in the surface patches match with the peripheral substituents of the BTA, which is attributed to a local increase in BTA concentration at the polymer fibers’ surface. Hierarchical fir‐tree‐like superstructures are accessible by utilizing the unique corona structure of patchy worm‐like micelles immobilized on electrospun polymer fibers and the molecular self‐assembly of a 1,3,5‐benzenetricarboxamide. The used combination of crystallization‐driven and molecular self‐assembly concepts can give access to a large variety of fibrillar superstructures with potential applications in filtration or catalysis.
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