Multifunctional geometrical isomers of ferrocene-benzo[1,2-b:4,5-b′]difuran-2,6-(3H,7H)-dione adducts: second-order nonlinear optical behaviour and charge transport in thin film OFET devices
作者:Priya Singla、Nick Van Steerteghem、Navdeep Kaur、A. Z. Ashar、Paramjit Kaur、Koen Clays、K. S. Narayan、Kamaljit Singh
DOI:10.1039/c6tc03876j
日期:——
which could be rationalized by correlation with electrochemical and theoretical data. The (Z)-6 chromophore recorded higher βHRS values than the corresponding (E)-6 isomer, in the donor–acceptor (D–A) type dyads. Similarly, in D–A–D chromophore 7, the βHRS values of isomers follow the order (Z,Z) > (E,Z) > (E,E), which matches with the trend of the wavelength of their maximum absorption as well as an increasing
合成了一组新的二茂铁-苯并[1,2- b:4,5 - b '] difuran-2,6-(3 H,7 H)-dione dyads的几何异构体,并进行了光学,非线性光学(NLO) )和电化学性能进行了研究。在少数情况下,通过光谱数据和单晶X射线分析可对化合物进行全面表征。使用飞秒超瑞利散射(HRS)方法在1300 nm下于氯仿中测量二阶非线性极化率。二元组显示出与结构有关的NLO性质,这可以通过与电化学和理论数据的相关性来合理化。的(ž) - 6个生色记录更高β HRS在供体-受体(D-A)型二元体中,其值比相应的(E)-6异构体高。类似地,在d-A-d生色7中,β HRS异构体的值按照顺序(Ž,Ž)>(ê,Ž)>(ê,ê),其与最大吸收波长的趋势以及带隙按此顺序增加的趋势相匹配。由于其固有的结构特征,这些D–A化合物中的两种还被研究为真空沉积的顶部接触底栅薄膜有机场效应晶体管(OFET)