Oxidation States of Unsymmetrically Substituted Quaterthiophenes with Two Terminal Ferrocenyl Groups
作者:Masa-aki Sato、Hirokazu Kamine、Takumi Kato
DOI:10.1246/bcsj.20100201
日期:2010.12.15
Unsymmetrically substituted quaterthiophenes with two terminal ferrocenyl groups were prepared as long π-conjugated systems. Anisotropy of the chemical structures of the π-conjugated systems was introduced by substitution of methoxy and hexyl groups. Electrochemical and spectroscopic studies were carried out to evaluate the oxidation states of the diferrocenylquaterthiophenes and the interaction between the two terminals. The one-electron oxidation of one diferrocenylquaterthiophene adequately substituted with two methoxy and one hexyl group occurs at one ferrocene moiety specified due to the unsymmetry of the quaterthiophene moiety. The one-electron oxidizing species extends into the quaterthiophene moiety and apparently interacts with the other terminal ferrocene moiety.
制备出了具有两个末端二茂铁基团的不对称取代四联噻吩长π共轭体系。通过取代甲氧基和己基,引入了 π 共轭体系化学结构的各向异性。通过电化学和光谱研究,评估了二茂铁基四噻吩的氧化态以及两个末端之间的相互作用。由于四联噻吩的不对称,被两个甲氧基和一个己基充分取代的二茂铁基四联噻吩的单电子氧化发生在一个指定的二茂铁分子上。单电子氧化物延伸到四联噻吩分子中,并明显与另一个二茂铁末端分子发生作用。