Boron difluorides with formazanate ligands: redox-switchable fluorescent dyes with large stokes shifts
Boron difluorides with formazanate ligands: redox-switchable fluorescent dyes with large stokes shifts
复制标题
DOI：
10.1039/c6dt01226d
复制
发表时间：
2016-06-21
影响因子：
4
通讯作者：
Otten, E.
中科院分区：
文献类型：
--
作者：
Chang, M. -C.;Chantzis, A.;Otten, E.
本文报道了一系列（甲偶氮）硼二氟化物及其单电子还原产物的合成。中性化合物是荧光的，具有大的斯托克斯位移。DFT计算表明，一个大的结构重组伴随着光激发，并占大斯托克斯位移。中性二氟化硼的还原发生在配体上，并产生相应的自由基阴离子。这些络合物是非荧光的，允许通过改变配体氧化态来切换发射。
The synthesis of a series of (formazanate)boron difluorides and their 1-electron reduction products is described. The neutral compounds are fluorescent with large Stokes shifts. DFT calculations suggest that a large structural reorganization accompanies photoexictation and accounts for the large Stokes shift. Reduction of the neutral boron difluorides occurs at the ligand and generates the corresponding radical anions. These complexes are non-fluorescent, allowing switching of the emission by changing the ligand oxidation state.