Unexpectedly Strong Diamagnetism of Self-Assembled Aromatic Peptides
Haijun Yang1,2, Zixin Wang3, Liuhua Mu2, Yongshun Song4, Jun Hu1, Feng Zhang3,5*, and Haiping Fang4,1*
1Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory (SSRF, ZJLab), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China 2Division of Interfacial Water, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 3State 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 4School of Science, East China University of Science and Technology, Shanghai 200237, China 5Biomedical Nanocenter, School of Life Science, Inner Mongolia Agricultural University, Hohhot 010011, China
Abstract：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 aromatic peptides is greatly enhanced for about 11 times by self-assembling, reaching two orders of magnitude higher than the mass susceptibility of pure water. The self-assembly of aromatic rings in the peptide molecules plays the key role in such a strong diamagnetism.
2020, Vol. 37 
