α-Polymethine-Substituted Boron Dipyrromethenes - BODIPY-Based NIR Cyanine-Like Dyes
作者:Mykola P. Shandura、Viktor P. Yakubovskyi、Andriy O. Gerasov、Olexiy D. Kachkovsky、Yevgen M. Poronik、Yuriy P. Kovtun
DOI:10.1002/ejoc.201101674
日期:2012.3
series of dyes bearing polymethine chromophore units in boron dipyrromethene (BODIPY) α-positions were prepared by condensation of 3,5-dimethyl boron dipyrromethene with various hemicyanines. One or two methyl groups of the starting material can react, yielding the corresponding mono- and disubstituted derivatives. The deeply coloured monosubstituted dyes belong to the family of merocyanine dyes and exhibit
通过 3,5-二甲基硼二吡咯亚甲基与各种半花青的缩合,制备了一系列在硼二吡咯亚甲基 (BODIPY) α-位上带有聚次甲基发色团单元的染料。起始材料的一个或两个甲基可以反应,产生相应的单和二取代衍生物。深色单取代染料属于部花青染料家族,表现出与介观类似物相似的光谱特性和化学行为。另一方面,与单取代染料相比,双取代染料显示出更复杂的吸收光谱,并且它们的吸收最大值发生红移(高达 970 nm,这是硼二吡咯亚甲基衍生物中已知的最红移的吸收)。光谱方法和量子化学计算表明,在改变外围发色团系统的特征时,长波长电子跃迁从二吡咯亚甲基型到聚甲炔型的演变。已经分析了最高电子跃迁的性质。