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

Abstract

Two-dimensional (2-D) micro- and nano- architectures are attractive because of their unique properties caused by their ultrathin and flat morphologies. However, the formation of 2-D supramolecular highly symmetrical structures with considerable control is still a major challenge. Here, we presented a simple approach for the preparation of regular and homogeneous 2-D fluorescent square noncrystallization micelles with conjugated diblock copolymers PPV 12-b-P2VP n through a process of dissolving-cooling-aging. The scale of the formed micelles could be controlled by the ratio of PPV/P2VP blocks and the concentration of the solution. The forming process of the platelet square micelles was analyzed by UV-Vis, DLS and SLS, while the molecular arrangement was characterized by GIXD. The results revealed that the micelles of PPV 12-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 PPV 12 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 PPV 12 cores.

Authors:
 [1];  [1];  [2]; ORCiD logo [3];  [2]; ORCiD logo [1]
  1. Southern Univ. of Science and Technology, Shenzhen (China). Dept. of Chemistry
  2. Jilin Univ., Changchun (China). State Key Lab. of Supramolecular Structure and Materials, Inst. of Theoretical Chemistry
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. of Molecular Engineering
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1426240
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Han, Liang, Wang, Meijing, Jia, Xiangmeng, Chen, Wei, Qian, Hujun, and He, Feng. Uniform two-dimensional square assemblies from conjugated block copolymers driven by π–π interactions with controllable sizes. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03195-y.
Han, Liang, Wang, Meijing, Jia, Xiangmeng, Chen, Wei, Qian, Hujun, & He, Feng. Uniform two-dimensional square assemblies from conjugated block copolymers driven by π–π interactions with controllable sizes. United States. doi:10.1038/s41467-018-03195-y.
Han, Liang, Wang, Meijing, Jia, Xiangmeng, Chen, Wei, Qian, Hujun, and He, Feng. Wed . "Uniform two-dimensional square assemblies from conjugated block copolymers driven by π–π interactions with controllable sizes". United States. doi:10.1038/s41467-018-03195-y. https://www.osti.gov/servlets/purl/1426240.
@article{osti_1426240,
title = {Uniform two-dimensional square assemblies from conjugated block copolymers driven by π–π interactions with controllable sizes},
author = {Han, Liang and Wang, Meijing and Jia, Xiangmeng and Chen, Wei and Qian, Hujun and He, Feng},
abstractNote = {Two-dimensional (2-D) micro- and nano- architectures are attractive because of their unique properties caused by their ultrathin and flat morphologies. However, the formation of 2-D supramolecular highly symmetrical structures with considerable control is still a major challenge. Here, we presented a simple approach for the preparation of regular and homogeneous 2-D fluorescent square noncrystallization micelles with conjugated diblock copolymers PPV12-b-P2VPn through a process of dissolving-cooling-aging. The scale of the formed micelles could be controlled by the ratio of PPV/P2VP blocks and the concentration of the solution. The forming process of the platelet square micelles was analyzed by UV-Vis, DLS and SLS, while the molecular arrangement was characterized by GIXD. The results revealed that the micelles of PPV12-b-P2VPn 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.},
doi = {10.1038/s41467-018-03195-y},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Wed Feb 28 00:00:00 EST 2018},
month = {Wed Feb 28 00:00:00 EST 2018}
}

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