Novel Fused D−A Dyad and A−D−A Triad Incorporating Tetrathiafulvalene and <i>p</i>-Benzoquinone
作者:Frédéric Dumur、Nicolas Gautier、Nuria Gallego-Planas、Yücel Şahin、Eric Levillain、Nicolas Mercier、Piétrick Hudhomme、Matteo Masino、Alberto Girlando、Vega Lloveras、José Vidal-Gancedo、Jaume Veciana、Concepció Rovira
DOI:10.1021/jo035689f
日期:2004.3.1
compounds of the cation radical and anion radical obtained upon (electro)chemical oxidation and reduction, respectively, was monitored by optical and ESR spectroscopies. The anion radical Q−TTF−Q-• triad was demonstrated to be a class II mixed-valence system with the existence of a temperature-dependent intramolecular electron transfer. The crystallographic tendency of these fused systems to overlap in
新型融合的供体-受体二元体(TTF-Q或D-A)和受体-供体-受体三联体(Q-TTF-Q或A-D-A)结合了供体四硫富瓦烯(TTF)和受体对苯并醌(Q )已合成。这些分子的溶液紫外可见光谱显示出低能量吸收带,这归因于两个拮抗单元之间的分子内电荷转移。通过循环伏安法显示了供体和受体部分可逆的氧化和还原波的存在,与TTF /醌单元的比例一致。通过光学和ESR光谱法监测由这些化合物分别在(电)化学氧化和还原时获得的阳离子自由基和阴离子自由基的连续生成。该阴离子自由基Q-TTF-Q - •三单元组被证明是具有温度依赖性分子内电子转移的II类混合价体系。还讨论了这些熔融系统在交替的A-D-A单元的混合堆栈中重叠的晶体学趋势。