Polyelectrochromic Vinyl Ruthenium-Modified Tritylium Dyes
Polyelectrochromic Vinyl Ruthenium-Modified Tritylium Dyes
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DOI：
10.1021/acs.organomet.7b00194
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发表时间：
2017-05
期刊：
影响因子：
2.8
通讯作者：
S. Oswald;Stefanie Breimaier;M. Linseis;R. Winter
中科院分区：
文献类型：
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作者：
S. Oswald;Stefanie Breimaier;M. Linseis;R. Winter
合成了一系列具有氧化还原活性的三芳基甲基配体的四个单核和一个双核钌苯乙烯配合物。所有新化合物的结构均通过NMR光谱、MS光谱、循环伏安法进行了表征，并通过IR、UV/维斯/NIR和EPR光谱对各种氧化态进行了表征。通过引入乙烯基钌实体增加共轭长度将电子吸收推向低能量，几乎进入近红外区域。电化学和光谱性质的强烈影响的帕拉取代基的三芳基甲基配体。该配合物的特点是在多达四个不同的氧化态的trication水平，并显示出显着的电致变色。氧化的混合价二钌络合物52+显示出适度的电荷和自旋离域的苯乙烯基钌网站。
A series of four mononuclear and one dinuclear ruthenium styryl complexes with redox active triarylmethylium ligands were prepared. All new compounds were characterized by NMR spectroscopy, MS spectrometry, cyclic voltammetry, and in various oxidation states by IR and UV/vis/NIR and EPR spectroscopy. The increase in conjugation length by the introduction of the vinyl ruthenium entity pushes the electronic absorption to low energy, almost into the near-infrared region. Electrochemical and spectroscopic properties are strongly influenced by the para substituents at the triarylmethylium ligands. The complexes were characterized in up to four different oxidation states up to the trication level and show pronounced electrochromism. The oxidized mixed-valent diruthenium complex 52+ shows a moderate degree of charge and spin delocalization over the styryl ruthenium sites.