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合成了3个侧链含不饱和基团取代的硫代双烯型镍络合物,即双[4,5-二(4’-叔丁基苄基)硫-1,3-二硫杂环戊烯]镍(2a)、双[4,5-二(烯丙基)硫-1,3-二硫杂环戊烯]镍(2b)和双[4,5-二(3’-苯基-烯丙基)硫-1,3-二硫杂环戊烯]镍(2c)以及作为参照品的一个侧链含饱和基团的硫代双烯型镍络合物,即双[4,5-二(癸基)硫-1,3-二硫杂环戊烯]镍(2d).它们的结构经1H NMR和质谱得到了表征.这些化合物在甲苯中有较好的溶解性,最大吸收波长(λmax)在1000 nm左右,而且取代基对它们最大吸收波长的位移影响很小.它们在固态聚甲基丙烯酸甲酯(PMMA)中的λmax也在1000 nm左右,且浓度较低时,吸收曲线未见有宽化的迹象.固态循环伏安的测试结果表明,苯基的引入对提高这类化合物的氧化电位有影响.热重分析(TGA)的结果表明,这类化合物失重5%的温度都在200℃以上.氙灯(300 W)照射100 min,它们的吸光度在甲苯中下降不到10%,在固态的PMMA中下降不到2%,苯基的引入有助于提高这类化合物在溶液和固态PMMA中的光化学稳定性.
Three thio-diolefin-type nickel complexes containing unsaturated group substitutions were synthesized, namely bis [4,5-bis (4’-t-butylbenzyl) Cyclopentene] nickel (2a), bis [4,5-bis (allyl) thio-1,3-dithiol] nickel (2b) and bis [4,5-bis Phenyl-allyl) -thio-1,3-dithiolane] nickel (2c) and one sidechain-containing thiodienyl nickel complex as a reference, ie, bis [ 4,5-di (decyl) thio-1,3-dithiolane] nickel (2d). Their structures were characterized by 1H NMR and mass spectra. These compounds have good solubility in toluene , The maximum absorption wavelength (λmax) is about 1000 nm, and the substituents have little effect on their maximum absorption wavelength shift.The λmax of them in PMMA is about 1000 nm, The results of solid-state cyclic voltammetry show that the introduction of phenyl has an effect on the oxidation potential of these compounds.The results of thermogravimetric analysis (TGA) show that this kind of compound The 5% weight loss temperature was above 200 ° C. The xenon lamp (300 W) irradiated 100 min, their absorbance decreased in toluene not 10%, less than 2% decrease in the PMMA solid, introduction of the phenyl help improve the photochemical stability of these compounds in solution and the solid PMMA.