Concentric hollow multi-hexagonal platelets from a small molecule

Chenglong Liao, Yanjun Gong, Yanxue Che, Hongwei Ji, Bing Liu (), Ling Zang (), Yanke Che () and Jincai Zhao
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Chenglong Liao: Chinese Academy of Sciences
Yanjun Gong: Chinese Academy of Sciences
Yanxue Che: HT-NOVA Co. Ltd.
Hongwei Ji: Chinese Academy of Sciences
Bing Liu: University of Chinese Academy of Sciences
Ling Zang: University of Utah
Yanke Che: Chinese Academy of Sciences
Jincai Zhao: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract The creation of well-defined hollow two-dimensional structures from small organic molecules, particularly those with controlled widths and numbers of segments, remains a formidable challenge. Here we report the fabrication of the well-defined concentric hollow two-dimensional platelets with programmable widths and numbers of segments through constructing a concentric multiblock two-dimensional precursor followed by post-processing. The fabrication of concentric multi-hexagons two-dimensional platelets is realized by the alternative heteroepitaxial growth of two donor-acceptor molecules. Upon ultraviolet irradiation, one of the two donor-acceptor molecules can be selectively oxidized by singlet oxygen generated during the process, and the oxidized product becomes more soluble due to increased polarity. This allows for selective removal of the oxidized segments simply by solvent dissolution, yielding hollow multiblock two-dimensional structures. The hollow two-dimensional platelets can be utilized as templates to lithograph complex electrodes with precisely controlled gap sizes, thereby offering a platform for examining the optoelectronic performance of functional materials.

Date: 2024
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DOI: 10.1038/s41467-024-49995-3

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