论文标题
由于自组装和阳离子而引起的意外强烈的diamagnetism和芳族肽的超帕磁性
Unexpectedly strong diamagnetism and superparamagnetism of aromatic peptides due to self-assembling and cations
论文作者
论文摘要
有大量的工作表明在分子水平上没有铁磁成分的有机成分的生物磁性，但要涵盖其实验结果和理论结果之间的巨大生物磁性差距是巨大的挑战。在这里，我们表明，通过自组装，芳香肽AYFFF的Diamagnetism大约增强了11倍，比纯净水的质量易感性高两个数量级。此外，AYFFF的自组件进一步与足够高浓度的ZNCL2溶液混合在一起，表现出超级磁性，质量易感性达到了两个以上的数量级，高于纯水的绝对值，这可能接近铁磁性的质量易感性。肽分子和阳离子中的芳族环是芳族肽的这种强烈磁性和超帕磁性的关键。
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.
