Song Hayoung, Kwon Giyun, Citek Cooper, Jeon Seungwon, Kang Kisuk, Lee Eunsung
Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
ACS Appl Mater Interfaces. 2021 Oct 6;13(39):46558-46565. doi: 10.1021/acsami.1c11571. Epub 2021 Sep 24.
Here, we report the imidazolium-/pyrrolinium-substituted persistent zwitterionic ferrocenate derivatives, which were characterized by electron paramagnetic resonance (EPR) and Fe Mössbauer spectroscopy. Additional theoretical studies on these zwitterionic ferrocenate derivatives clearly explain the origin of their thermal stability and the orbital interactions between iron and imidazolium-/pyrrolinium-substituted zwitterionic cyclopentadienyl ligand. Exploiting the facile Fe(II/I) redox chemistry, we successfully demonstrated that the pyrrolinium-substituted ferrocene derivative can be applied as an example of derivatized ferrocene anolyte for redox-flow batteries. These zwitterionic ferrocenate derivatives will not only deepen our understanding of the intrinsic chemistry of ferrocenate but have the potential to open the way for the rational design of metallocenate derivatives for various applications.
在此，我们报道了咪唑鎓/吡咯啉鎓取代的持久性两性离子二茂铁酸盐衍生物，它们通过电子顺磁共振（EPR）和铁穆斯堡尔光谱进行了表征。对这些两性离子二茂铁酸盐衍生物的进一步理论研究清楚地解释了它们热稳定性的起源以及铁与咪唑鎓/吡咯啉鎓取代的两性离子环戊二烯基配体之间的轨道相互作用。利用简便的Fe(II/I)氧化还原化学，我们成功证明吡咯啉鎓取代的二茂铁衍生物可作为氧化还原液流电池衍生化二茂铁阳极电解液的一个实例。这些两性离子二茂铁酸盐衍生物不仅将加深我们对二茂铁酸盐内在化学的理解，而且有潜力为各种应用的金属茂酸盐衍生物的合理设计开辟道路。
