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


ABSTRACT: Integrating together two dissimilar ?-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.

SUBMITTER: Lei Y 

PROVIDER: S-EPMC6195596 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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

Lei Yilong Y   Sun Yanqiu Y   Zhang Yi Y   Zhang Hongyang H   Zhang Haihua H   Meng Zhengong Z   Wong Wai-Yeung WY   Yao Jiannian J   Fu Hongbing H  

Nature communications 20181019 1


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. T  ...[more]

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