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Controllable and Reversible Assembly of Nanofiber from Natural Macromolecules via Protonation and Deprotonation by Hongzhi Zheng; Xing Tong; Yuping Zhang; Panchao Yin; Jiwang Yi; Zehong Chen; Haihong Lai; Wei zhou; Linxin Zhong; Hao Zhuo; Xinwen Peng is a Engineering article available to read on EtoBox.

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## Abstract Nanofiber is the critical building block for many biological systems to perform various functions. Artificial assembly of molecules into nanofibers in a controllable and reversible manner will create “smart” functions to mimic those of their natural analogues and fabricate new functional materials, but remains an open challenge especially for nature macromolecules. Herein, the controllable and reversible assembly of nanofiber (CSNF) from natural macromolecules with oppositely charged groups are successfully realized by protonation and deprotonation of charged groups. By controlling the electrostatic interaction via protonation and deprotonation, the size and morphology of the assembled nanostructures can be precisely controlled. A strong electrostatic interaction contributes to large nanofiber with high strength, while poor electrostatic interaction produces finer nanofiber or nanoparticle. And especially, the assembly, disassembly, and reassembly of the nanofiber occurs reversibly through protonation and deprotonation, thereby paving a new way for precisely controlling the assembly process and structure of nanofiber. The reversible assembly allows the nanostructure to

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Author

Hongzhi Zheng; Xing Tong; Yuping Zhang; Panchao Yin; Jiwang Yi; Zehong Chen; Haihong Lai; Wei zhou; Linxin Zhong; Hao Zhuo; Xinwen Peng

Publisher

Wiley

Published

2023

Language

EN

Field

Engineering (Physical Sciences)