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https://doi.org/10.1007/s12274-021-3824-y

Chiral self-assembly of terminal alkyne and selenium clusters organic–inorganic hybrid

Zhi Chen1,2, Tao Lin3, Haohan Li2, Mingzi Sun4, Chenliang Su1 (✉), Bolong Huang4 (✉), and Kian Ping Loh2 (✉)

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1 SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
2 Department of Chemistry, Centre for Advanced 2D Materials (CA2DM), National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
3 College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
4 Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China

Keywords: self-assembly, inorganic–organic hybrid, chiral, Se cluster, concentration-dependent
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The on-surface self-assembly of inorganic atomic clusters and organic molecules offers significant opportunities to design novel hybrid materials with tailored functionalities. By adopting the advantages from both inorganic and organic components, the hybrid self-assembly molecules have shown great potential in future optoelectrical devices. Herein, we report the co-deposition of 4,8- diethynylbenzo[1,2-d-4,5-d0]bisoxazole (DEBBA) and Se atoms to produce a motif-adjustable organic–inorganic hybrid selfassembly system via the non-covalent interactions. By controlling the coverage of Se atoms, various chiral molecular networks containing Se, Se6, Se8, and terminal alkynes evolved on the Ag(111) surface. In particular, with the highest coverage of Se atoms, phase segregation into alternating one-dimensional chains of non-covalently bonded Se8 clusters and organic ligands has been noticed. The atom-coverage dependent evolution of self-assembly structures reflects the remarkable structural adaptability of Se clusters as building blocks based on the spontaneous resize to reach the maximum non-covalent interactions. This work has significantly extended the possibilities of flexible control in self-assembly nanostructures to enable more potential functions for broad applications.
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Chiral self-assembly of terminal alkyne and selenium clusters organic–inorganic hybrid. Nano Res. https://doi.org/10.1007/s12274-021-3824-y

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