The effect of heavy atom to two photon absorption properties and intersystem crossing mechanism in aza-boron-dipyrromethene compounds
作者:Ahmet Karatay、M. Ceren Miser、Xiaoneng Cui、Betül Küçüköz、Halil Yılmaz、Gökhan Sevinç、Elif Akhüseyin、Xueyan Wu、Mustafa Hayvali、H. Gul Yaglioglu、Jianzhang Zhao、Ayhan Elmali
DOI:10.1016/j.dyepig.2015.07.002
日期:2015.11
probability of intersystem crossing increases. Z-scan experiments at 800 nm wavelengths revealed considerably large (610 GM) two photon absorption cross section value with respect to literature for compounds showing intersystem crossing mechanism. The efficient intersystem crossing and enhanced two-photon absorption properties make the investigated aza-boron-dipyrromethene compounds good candidates
设计并合成了各种位置含溴原子的新型氮杂硼-二吡咯亚甲基化合物,以增强三重态态种群和两个光子吸收特性,可用于二光子光动力疗法,三重态-三重态an灭上转换。稳态荧光和超快泵浦探针光谱技术显示,只有2、6个位置的氮杂硼-二吡咯二烯核心对三重态人口有显着贡献。密度泛函理论计算表明,当将溴原子引入氮杂硼-双-吡咯二烯中心的2、6位时,单线态和三线态能级越近,因此系统间交叉的可能性就越大。在800 nm波长下的Z扫描实验表明,相对于文献中显示出系统间交叉机理的化合物而言,两个光子吸收截面值相当大(610 GM)。有效的系统间穿越和增强的双光子吸收特性使所研究的氮杂硼-二吡咯亚甲基化合物成为双光子光动力疗法应用的良好候选者。