4-Ferrocenylphenyl-Substituted Tritylium Dyes with Open and Interlinked C<sup>+</sup>Ar<sub>2</sub> Entities: Redox Behavior, Electrochromism, and a Quantitative Study of the Dimerization of Their Neutral Radicals
作者:Larissa A. Casper、Lukas Wursthorn、Marcel Geppert、Patrick Roser、Michael Linseis、Malte Drescher、Rainer F. Winter
DOI:10.1021/acs.organomet.0c00486
日期:2020.9.14
All complexes are intensely colored and show more or less intense absorption bands owing to charge transfer from the 4-ferrocenylphenyl donor to the C+Ar2 acceptor unit as well as reversible electrochromism upon reduction and oxidation. The spectral profiles and redox potentials depend on whether or not the methylium center is incorporated into a 14-π-electron arene system. T-dependent EPR spectroscopy
我们报告了七个4-二茂铁基苯基取代的三苯ity染料Fc-C 6 H 4 -C + Ar 2带有未连接或互连的芳基残基Ar,包括与六元(硫代)x鎓和七元(二氢)二苯并[ a,d ]环庚三烯基基序。由于从4-二茂铁基苯基供体到C + Ar 2受体单元的电荷转移以及还原和氧化时可逆的电致变色作用,所有配合物均呈强烈着色并显示或多或少的吸收带。光谱曲线和氧化还原电势取决于亚甲基中心是否结合到14-π电子芳烃系统中。Ť依赖的EPR光谱表明,它们的单电子还原中性基团二聚。随后的单体-二聚体平衡通过定量旋转计数法进行了研究,结果显示出意想不到的很大程度的二聚化85.0-99.6%。