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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 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.

Authors:
; ; ; ORCiD logo; ; ORCiD logo
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 - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1426240
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nature Communications; Journal Volume: 9; Journal Issue: 1
Country of Publication:
United States
Language:
English

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.
@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}
}