文献类型：期刊文献

英文题名：Unexpectedly strong diamagnetism and superparamagnetism of aromatic peptides due to self-assembling and cations

作者：Yang, Haijun[1,2]; Mu, Liuhua[2]; Song, Yongshun[3]; Wang, Zixin[4]; Zhang, Xin[5]; Hu, Jun[1]; Zhang, Feng[4,6]; Fang, Haiping[1,3]

机构：[1] Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory [SSRF, ZJLab], Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China; [2] Division of Interfacial Water, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China; [3] School of Science, East China University of Science and Technology, Shanghai, 200237, China; [4] State Key Laboratory of Respiratory Disease, Guangzhou Institute of Oral Disease, Stomatology Hospital, Department of Biomedical Engineering, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China; [5] High Magnetic Field Laboratory, Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China; [6] Biomedical Nanocenter, School of Life Science, Inner Mongolia Agricultural University, 29 East Erdos Street, Hohhot, 010011, China

年份：2020

外文期刊名：arXiv

收录：EI(收录号：20200566012)

语种：英文

外文关键词：Aromatic compounds - Aromatization - Chlorine compounds - Ferromagnetism - Positive ions - Superparamagnetism - Zinc chloride

摘要：There is a considerable amount of work that shows the biomagnetism of organic components without ferromagnetic components at the molecular level, but it is of great challenge to cover the giant gap of biomagnetism between their experimental and theoretical results. Here, we show that the diamagnetism of an aromatic peptide, the AYFFF, is greatly enhanced for about 11 times by self-assembling, reaching two orders of magnitude higher than the mass susceptibility of pure water. Moreover, the AYFFF self-assemblies further mixed with ZnCl2 solution of sufficiently high concentrations display superparamagnetism, with the mass susceptibility reaching more than two orders of magnitude higher than the absolute value of pure water, which may approach the mass susceptibility of ferromagnetism. The aromatic rings in the peptide molecules and the cations are the keys to such a strong diamagnetism and superparamagnetism of aromatic peptides. Copyright ? 2020, The Authors. All rights reserved.