Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
School of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215500, China.
Molecules. 2022 Apr 29;27(9):2849. doi: 10.3390/molecules27092849.
The linear and nonlinear optical properties of two BODIPY derivatives, 1,7-Diphenyl-3,5-bis(9,9-dimethyl-9H-fluoren-2-yl)-boron-diuoride-azadipyrromethene (ZL-61) and 1,7-Diphenyl-3,5-bis(4-(1,2,2-triphenylvinyl)phenyl)-boron-diuoride-azadipyrromethene (ZL-22), were comprehensively investigated based on experimental and theoretical studies. It was found that both compounds show a strong two-photon absorption response in the near-infrared regime, and the two-photon-absorption cross-section values of ZL-61 and ZL-22 were determined to be 8321 GM and 1864 GM at 800 nm, respectively. The improvement of the two-photon absorption cross section in ZL-61 was attributed to the enhancement of the donor group, which was confirmed by transient absorption measurements and DFT calculation. Our results indicate that these BODIPY derivatives are a promising candidate for optical limiting and two-photon imaging applications.
两种 BODIPY 衍生物，1,7-二苯基-3,5-双（9,9-二甲基-9H-芴-2-基）-硼二氟-偶氮吡咯甲川（ZL-61）和 1,7-二苯基-3,5-双（4-（1,2,2-三苯基乙烯基）苯基）-硼二氟-偶氮吡咯甲川（ZL-22）的线性和非线性光学性质通过实验和理论研究进行了综合研究。结果发现，这两种化合物在近红外区域均表现出较强的双光子吸收响应，ZL-61 和 ZL-22 在 800nm 处的双光子吸收截面值分别为 8321GM 和 1864GM。ZL-61 中双光子吸收截面的提高归因于供体基团的增强，这通过瞬态吸收测量和 DFT 计算得到了证实。我们的研究结果表明，这些 BODIPY 衍生物是用于光限幅和双光子成像应用的有前途的候选材料。
