Enhancement of Two-Photon Absorption in Boron-Dipyrromethene (BODIPY) Derivatives

Molecules. 2022 Apr 29;27(9):2849. doi: 10.3390/molecules27092849.

Abstract

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.

Keywords: azaBODIPYs; nonlinear optics; optical limiting; two-photon absorption.

MeSH terms

  • Boron Compounds
  • Boron*
  • Fluorescent Dyes*
  • Porphobilinogen / analogs & derivatives

Substances

  • 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene
  • Boron Compounds
  • Fluorescent Dyes
  • dipyrromethene
  • Porphobilinogen
  • Boron

Grants and funding

This work was supported by the NSAF (Grant No. U1630103), National Natural Science Foundation of China (Nos. 11804244), Natural Science Foundation of Jiangsu Province (No. BK20180965), National Natural Science Foundation of China (No. 11704273), Natural Science Foundation of Jiangsu Province, China (Grant No. BK20170375).