Coordinated o-dithio- and o-iminothiobenzo-semiquinonate(1-) π radicals in [MII(bpy)(L•)](PF6) complexes
Coordinated o-dithio- and o-iminothiobenzo-semiquinonate(1-) π radicals in [MII(bpy)(L•)](PF6) complexes
复制标题
DOI：
10.1002/anie.200390162
复制
发表时间：
2003-01-01
影响因子：
16.6
通讯作者：
Wieghardt, K
中科院分区：
文献类型：
--
作者：
Ghosh, P;Begum, A;Wieghardt, K
[26]怀疑共振稳定的甲基丙二腈自由基在聚合中充当可逆终止剂（PC Wieland，O.努伊肯湾施密特，K. Fischer，Macromol.快速通信2001，22，1255）。我们的实验室目前正在进行相关研究。[27]纯化表面的外反射FTIR光谱（索氏提取，甲苯，12小时）证实在所有情况下形成共价连接的聚苯乙烯层（典型的吸收带：（n以cm-1计）：CH芳族伸缩：3102，3018，3060，3026，2999; CH脂族伸缩：2922，2848;单取代芳环的CH面外基础泛音：1945，1867，1795;环呼吸：1602，1493，1452，CH变形模式（面外）：758，698。[28]作为聚合时间和照射条件的函数的膜厚度的定量分析目前正在进行中。然而，膜厚度随聚合时间稳定增加，尽管不如参考文献[17]中报道的在类似引发剂存在下的光引发聚合那样快。
[26] It is suspected that the resonance-stabilized methylmalonodinitrile radical acts as a reversible termination agent in the polymerization (PC Wieland, O. Nuyken, M. Schmidt, K. Fischer, Macromol. Rapid Commun. 2001, 22, 1255). Related studies are currently underway in our laboratories.[27] The external reflection FTIR spectra of the purified surfaces (Soxhlet extraction, toluene, 12 h) confirmed that in all cases a layer of covalently attached polystyrene was formed (typical absorption bands:(n in cmĀ1): CH aromatic stretching: 3102, 3018, 3060, 3026, 2999; CH aliphatic stretching: 2922, 2848; overtones of CH out-of-plane fundamentals for monosubstituted aromatic rings: 1945, 1867, 1795; ring breathing: 1602, 1493, 1452, CH deformation modes (out-of-plane): 758, 698.[28] Quantitative analysis of the film thickness as a function of the polymerization time and irradiation conditions are currently underway. However, the film thickness steadily increases with the time of polymerization, although not as rapidly as reported in reference [17] for the photoinitiated polymerization in the presence of a similar initiator.