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Novel magnetic nanomaterials inspired by magnetotactic bacteria: Topical review

机译：受趋磁细菌启发的新型磁性纳米材料：专题综述

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摘要

Magnetotactic bacteria, known to produce magnetic nanocrystals with uniform shapes and sizes at physiological conditions, serve as an inspiration and source of a number of biological macromolecules used for the biomimetic synthesis of a variety of magnetic nanomaterials. This review discusses the current state of understanding of magnetosome biomineralization in magnetotactic bacteria, as well as the ways in which iron biomineralization processes can be utilized for tailored in vivo formation of complex magnetic nanomaterials, not occurring in magnetotactic bacteria naturally. The review assesses the current efforts on in vitro synthesis of a variety of magnetic nanoparticles using bioinspired approaches by utilizing mineralization proteins from magnetotactic bacteria, and surveys biomimetic strategies for the rational synthesis of various magnetic nanomaterials under ambient conditions. Finally, this review presents magnetic characterization of nanoparticles, highlighting differences in magnetic behavior between magnetic nanoparticles produced using bioinspired in vivo and in vitro strategies, compared to those produced using conventional methods. This in turn impacts their utility in a wide range of applications for magnetic nanoparticles, which are examined in detail, where bioinspired synthesis methods have potentially provided added advantages.
机译：趋磁细菌已知在生理条件下产生具有均匀形状和大小的磁性纳米晶体，它是许多生物大分子用于仿生合成的生物大分子的灵感和来源。这篇综述讨论了对趋磁细菌中的磁小体生物矿化的理解的现状，以及将铁生物矿化过程可用于量身定制的体内复杂磁性纳米材料体内形成的方法，而天然趋磁细菌中不会发生这种情况。这篇综述通过利用来自趋磁细菌的矿化蛋白，利用生物启发方法评估了目前在体外合成各种磁性纳米颗粒的努力，并调查了在环境条件下合理合成各种磁性纳米材料的仿生策略。最后，本综述介绍了纳米颗粒的磁性特征，突出了与使用常规方法生产的磁性纳米颗粒相比，使用生物启发的体内和体外策略生产的磁性纳米颗粒之间的磁行为差异。反过来，这会影响它们在磁性纳米粒子的广泛应用中的实用性，在详细研究中，生物启发性合成方法可能会带来更多优势。

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