Uniform two-dimensional square assemblies from conjugated block copolymers driven by π–π interactions with controllable sizes

Liang Han, Meijing Wang, Xiangmeng Jia, Wei Chen, Hujun Qian and Feng He ()
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Liang Han: Southern University of Science and Technology
Meijing Wang: Southern University of Science and Technology
Xiangmeng Jia: Institute of Theoretical Chemistry, Jilin University
Wei Chen: Argonne National Laboratory
Hujun Qian: Institute of Theoretical Chemistry, Jilin University
Feng He: Southern University of Science and Technology

Nature Communications, 2018, vol. 9, issue 1, 1-12

Abstract: Abstract Two-dimensional (2-D) micro- and nano-architectures are attractive because of their unique properties. However, the formation of 2-D supramolecular highly symmetrical structures with considerable control is still a major challenge. Here we present a simple approach for the preparation of regular and homogeneous 2-D fluorescent square non-crystallization micelles with conjugated diblock copolymers PPV12-b-P2VP n through a process of dissolving–cooling–aging. The scale of the formed micelles can be controlled by the ratio of PPV/P2VP blocks and the concentration of the solution. The results reveal that the micelles of PPV12-b-P2VP n initially form 1-D structures and then grow into 2-D structures in solution, and the growth is driven by intermolecular π–π interactions with the PPV12 blocks. The formation of 2-D square micelles is induced by herringbone arrangement of the molecules, which is closely related to the presence of the branched alkyl chains attached to conjugated PPV12 cores.

Date: 2018
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DOI: 10.1038/s41467-018-03195-y

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