化学
二苯乙炔
阳离子聚合
环戊二烯基络合物
光化学
苯乙炔
六氟磷酸盐
吸收(声学)
发色团
双光子吸收
高分子化学
有机化学
催化作用
光学
激光器
离子液体
物理
作者
Y. Shi,Guanglei Li,Bin Zhao,Yu Chen,Pengjie Chao,Huiqing Zhang,Xiaoning Wang,Tao Wang
标识
DOI:10.1016/j.ica.2015.01.007
摘要
Cationic cyclopentadienyl iron complexes of arenes are applied in photopolymerization and photocatalysis because of their good photophysical and photochemical properties. In this study, a series of cationic cyclopentadienyl iron complexes with diphenylacetylene chromophores (Aky-Fc) was obtained via nucleophilic substitution and Suzuki coupling reactions. The linear and nonlinear optical properties of the obtained molecules were tuned by phenylethynyl linkages. The UV–Vis absorption spectra showed that increasing the conjugation by substituting phenylacetylene spacer resulted in a red shift in the absorption bands and much stronger absorption in Aky-Fc than in (η6-cumene) (η5-cyclopentadienyl) iron hexafluorophosphate (I-261). With the single-beam Z-scan technique, the nonlinear absorption of Aky-Fc showed that Aky-Fc (8), (9), and (10) had good nonlinear optical ability, and the two photon absorption (TPA) cross section σ was approximately 10 times that of I-261.
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