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On-line Access: 2022-07-01

Received: 2021-08-01

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Crosschecked: 2022-02-14

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Bio-Design and Manufacturing  2022 Vol.5 No.3 P.529-539

http://doi.org/10.1007/s42242-022-00186-3


Modulating vectored non-covalent interactions for layered assembly with engineerable properties


Author(s):  Jiahao Zhang, Sarah Guerin, Haoran Wu, Bin Xue, Yi Cao, Syed A. M. Tofail, Yancheng Wang, Damien Thompson, Wei Wang, Kai Tao, Deqing Mei & Ehud Gazit

Affiliation(s):  State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   xuebinnju@nju.edu.cn, Damien.Thompson@ul.ie, kai.tao@zju.edu.cn

Key Words:  Vectored non-covalent interactions, Layered assembly, Supramolecular graphene, Engineerable properties, Physical vapor deposition


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Jiahao Zhang, Sarah Guerin, Haoran Wu, Bin Xue, Yi Cao, Syed A. M. Tofail, Yancheng Wang, Damien Thompson, Wei Wang, Kai Tao, Deqing Mei & Ehud Gazit. Modulating vectored non-covalent interactions for layered assembly with engineerable properties[J]. Journal of Zhejiang University Science D, 2022, 5(3): 529-539.

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doi="10.1007/s42242-022-00186-3"
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Abstract: 
vectored non-covalent interactionsmainly hydrogen bonding and aromatic interactionsextensively contribute to (bio)- organic self-assembling processes and significantly impact the physicochemical properties of the associated superstructures. However, vectored non-covalent interaction-driven assembly occurs mainly along one-dimensional (1D) or three-dimensional (3D) directions, and a two-dimensional (2D) orientation, especially that of multilayered, graphene-like assembly, has been reported less. In this present research, by introducing amino, hydroxyl, and phenyl moieties to the triazine skeleton, supramolecular layered assembly is achieved by vectored non-covalent interactions. The planar hydrogen bonding network results in high stability, with a thermal sustainability of up to about 330 C and a Youngs modulus of up to about 40 GPa. Upon introducing wrinkles by biased hydrogen bonding or aromatic interactions to disturb the planar organization, the stability attenuates. However, the intertwined aromatic interactions prompt a red edge excitation shift effect inside the assemblies, inducing broad-spectrum fluorescence covering nearly the entire visible light region (400650 nm). We show that bionic, superhydrophobic, pillar-like arrays with contact angles of up to about 170 can be engineered by aromatic interactions using a physical vapor deposition approach, which cannot be realized through hydrogen bonding. Our findings show the feasibility of 2D assembly with engineerable properties by modulating vectored non-covalent interactions.

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