的二氟化硼络合物formazanate轴承的三个子类评价ö, -米- ,和p -苯甲醚ñ -芳基取代基(Ar)的容易获得的替代硼二吡咯亚甲基(BODIPY)用于细胞成像应用的染料进行说明。而最大吸收(的波长λ最大)和发射(λ EM为复合物的每个子类,其差异可以通过碳结合的取代基(R)观察到的),是类似的,发射量子产率为7 - C ^(R =氰基)相对于8 a – c(R =硝基)和9 a –c(R =苯基)。与9 a – c相比,配合物7 a – c和8 a – c明显更易于电化学还原成其自由基阴离子和二价阴离子形式。在每个子类中,ö取代衍生物是更难以降低,具有更短的λ最大和λ EM以及更低的发射量子产率比所述p取代的类似物作为空间位驱动扭曲的结果ñ -芳基取代基和一个下降在π共轭的程度。该米取代的复合物的至少难以减少和具有中间λ最大,λ EM,和量子产率。研究的复合物还表现出较大的斯托克斯位移(82–152
Potentiometric, conductimetric, spectrometric, thermogravimetric and magnetic studies of lanthanum complexes with some symmetric 1,5-diaryl-3-cyanoformazans
作者:N.T. Abdel-Ghani、O.E. Sherif
DOI:10.1016/0040-6031(89)87172-2
日期:1989.12
obtain basic knowledge on the complexes of La(III) with some symmetric 1,5-diaryl-3-cyanoformazans. The ionization constants of the formazans as well as the formation constants of their lanthanum complexes were studied potentiometrically m solution by Sarin's method. The La(III) complexes formed were separated and their structures were elucidated by elemental analysis, IR, NMR spectroscopy, thermogravimetry
作者:Stephanie M. Barbon、Pauline A. Reinkeluers、Jacquelyn T. Price、Viktor N. Staroverov、Joe B. Gilroy
DOI:10.1002/chem.201404297
日期:2014.9.1
The straightforward synthesis of a series of 3‐cyanoformazanate borondifluoridedyes is reported. Phenyl, 4‐methoxyphenyl and 4‐cyanophenyl N‐substituted derivatives were isolated and characterized by single‐crystal X‐ray crystallography, cyclic voltammetry, and UV/Vis spectroscopy. The compounds were demonstrated to possess tunable, substituent‐dependent absorption, emission, and electrochemical