期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 144, 期 8, 页码 3468-3476出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c11750
关键词
-
资金
- China-Israel Scientific Research Program [001840]
- NSF-BSF Joint Funding Research Grants [2020752]
- NSFC-ISF Joint Scientific Research Program [3145/19]
- Center for Nanoscience and Nanotechnology at Tel Aviv University
- Science Foundation Ireland (SFI) [15/CDA/3491, 12/RC/2275_P2]
- National Natural Science Foundation of China [51973170]
- Fundamental Research Funds for the Central Universities [JB191405, JC2107]
- Natural Science Foundation of Shaanxi Province [2019JCW-17, 2020JCW-15]
- Development and Planning Guide Foundation of Xidian University [21103200005]
The understanding of the piezoelectricity in biological materials is still incomplete at the molecular level, which hinders the rational design of eco-friendly piezoelectric supramolecular materials. This study demonstrates a new type of adaptive piezoelectric supramolecular material by observing the mechanoresponses of Piezo channel proteins and amplifying the electromechanical response of a peptide metal-organic framework through guest-host interactions.
The apparent piezoelectricity of biological materials is not yet fully understood at the molecular level. In particular, dynamic noncovalent interactions, such as host-guest binding, are not included in the classical piezoelectric model, which limits the rational design of eco-friendly piezoelectric supramolecular materials. Here, inspired by the conformation-dependent mechanoresponse of the Piezo channel proteins, we show that guest-host interactions can amplify the electromechanical response of a conformationally mobile peptide metal-organic framework (MOF) based on the endogenous carnosine dipeptide, demonstrating a new type of adaptive piezoelectric supramolecular material. Density functional theory (DFT) predictions validated by piezoresponse force microscopy (PFM) measurements show that directional alignment of the guest molecules in the host carnosine-zinc peptide MOF channel determines the macroscopic electromechanical properties. We produce stable, robust 1.4 V open-circuit voltage under applied force of 25 N with a frequency of 0.1 Hz. Our findings demonstrate that the regulation of host-guest interactions could serve as an efficient method for engineering sustainable peptide-based power generators.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据