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Complex assembly from planar and twisted π-conjugated molecules towards alloy helices and core-shell structures

Author

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  • Yilong Lei

    (Tianjin University
    The Hong Kong Polytechnic University
    Hong Kong Baptist University)

  • Yanqiu Sun

    (Institute of Chemistry, Chinese Academy of Sciences (ICCAS))

  • Yi Zhang

    (Institute of Chemistry, Chinese Academy of Sciences (ICCAS))

  • Hongyang Zhang

    (Hong Kong Baptist University)

  • Haihua Zhang

    (Tianjin University)

  • Zhengong Meng

    (Hong Kong Baptist University)

  • Wai-Yeung Wong

    (The Hong Kong Polytechnic University)

  • Jiannian Yao

    (Institute of Chemistry, Chinese Academy of Sciences (ICCAS))

  • Hongbing Fu

    (Tianjin University)

Abstract

Integrating together two dissimilar π-conjugated molecules into controlled complex topological configurations remains a largely unsolved problem owing to the diversity of organic species and their respective different assembly features. Here, we find that two structurally similar organic semiconductors, 9,10-bis(phenylethynyl)anthracene (BA) and 5,12-bis(phenylethynyl)naphthacene (BN), co-assemble into two-component helices by control of the growth kinetics as well as the molar ratio of BA/BN. The helical superstructures made of planar and twisted bis(phenylethynyl) derivatives can be regarded as (BA)x(BN)1−x alloys, which are formed due to compatible structural relationship between BA and BN. Moreover, epitaxial growth of (BA)x(BN)1−x alloy layer on the surface of BA tube to form BA@(BA)x(BN)1−x core-shell structure is also achieved via a solute exchange process. The precise control over composition and morphology towards organic alloy helices and core-shell microstructures opens a door for understanding the complex co-assembly features of two or more different material partners with similar structures.

Suggested Citation

  • Yilong Lei & Yanqiu Sun & Yi Zhang & Hongyang Zhang & Haihua Zhang & Zhengong Meng & Wai-Yeung Wong & Jiannian Yao & Hongbing Fu, 2018. "Complex assembly from planar and twisted π-conjugated molecules towards alloy helices and core-shell structures," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06489-3
    DOI: 10.1038/s41467-018-06489-3
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