期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-06489-3
关键词
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资金
- Start-up Grant for New Academics of HKBU [38-40-223]
- National Basic Research Program of China (973) [2013CB933500]
- National Natural Science Foundation of China [51573151, 91222203, 21273251, 91333111, 21190034, 21221002]
- Hong Kong Research Grants Council [PolyU 123384/16 P, C6009-17G]
- Areas of Excellence Scheme of HKSAR [AoE/P-03/08]
- Hong Kong Polytechnic University [1-ZE1C]
- [847 S]
Integrating together two dissimilar pi-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.
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