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hydrogen-bonding regulated supramolecular chirality with controllable biostability

Nano Research 2022年第3期15卷 2226-2234页

作者： Jinying Liu Yu Zhao Changli Zhao Xiaoqiu Dou Xiaoyu Ma Shaokang Guan Yu Jia Chuanliang Feng State Key Lab of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Special Functional Materials of Ministry of Education School of Materials Science and EngineeringHenan UniversityKaifeng 475004China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China International Laboratory for Quantum Functional Materials of Henan and School of PhysicsZhengzhou UniversityZhengzhou 450001China

The regulation of natural helical nanostructures is principally supported and actuated by hydrogen bonds(H-bonds)formed from hydrogen-bonding groups(peptide bonds and base pairs)to realize biological activities and specific biofunctional ***,studying the role of H-bonding patterns on the handedness of supramolecular assemblies is still challenging,since supramolecular assemblies will be disassembled or destabilized with slightly varying H-bonding groups for most *** circumvent this issue,herein,two types of self-assembled C2-symmetric phenylalanine derivatives differed by a single H-bonding group(ester or amide)are systematically designed for deciphering the role of H-bonding pattern on the chirality of supramolecular assemblies and their related *** handedness nanofibrous structures with tailorable diameter and helical pitch are achieved with the transition from ester to amide groups in the *** and theoretical evidence suggests that helical orientation of ester-containing gelators ascribes to intermolecular *** contrast,the helical direction for the amide-counterparts is mainly due to intra-and intermolecular ***,these H-bonding groups greatly influence their stability,as revealed by in vitro and in vivo degradation experiments and the left-handed assemblies are more stable than the right-handed ***,the study offers a feasible model to have valuable insight into understanding the role of H-bonding patterns in biological folding.

关键词： supramolecular chirality helical structures hydrogen-bonding group hydrogen-bonding pattern biostability

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