Three-photon absorption iridium(iii) photosensitizers featuring aggregation induced emission

Abstract

In this study, three-photon absorbing cyclometalated iridium(III) complexes (Ir-H, Ir-8C, and Ir-O) were rational designed and synthesized through fine-tuning of an auxiliary ligand. The long alkoxy chains in Ir-8C and...

Ir(III) Complexes with AIE Characteristics for Biological Applications

“…Under multiphoton confocal and STED microscopies, 15 showed superstability in nucleolus, which displayed that 15 had high signal-to-noise ratio ( Figure 7 G). Recently, Lu et al [ 65 ] designed and synthesized a series of 3PA-Ir(III) complexes, named 16 , 17 and 18 ( Figure 7 H). Only 16, which did not have a long alkoxy chain, showed AIE activity and excellent three-photon absorption properties ( Figure 7 I,J).…”

“…( K ) 3D fluorescence images of 3D multicellular tumor spheroids under one-photon and two-photon laser irradiation. Reprinted with permission from [ 65 ], copyright 2022, Royal Society of Chemistry.…”

AIPE-active cationic Ir(iii) complexes for efficient detection of 2,4,6-trinitrophenol and oxygen

“…20 In comparison with fluorescent AIEgens, phosphorescent AIEgens possess high luminescence efficiency and good photo and thermal stabilities. [21][22][23][24][25] Recently, some metal complexes have been reported to display excellent aggregation-induced phosphorescent emission (AIPE) activity. [26][27][28] As phosphorescent luminogens, Ir(III) complexes have attracted more attention in OLEDs, organic photovoltaics, luminescence sensing, and biomedical imaging due to their intriguing photophysical properties.…”

Ligand-regulated three-photon AIE properties of manganese(ii) complexes for photodynamic therapy

“…In our previous work, we synthesized three Ir complexes with AIE properties; however, the synthesis routes are complicated and the cost is high which limit their application in biological diagnosis and treatment. 14…”

“…In our previous work, we synthesized three Ir complexes with AIE properties; however, the synthesis routes are complicated and the cost is high which limit their application in biological diagnosis and treatment. 14 Herein, we reasonably developed a series of carbazolyl trispyridyl manganese(II) complexes (MD1-MD3) with a D-A con-figuration, in which MD2 and MD3 are modified with halogens (Br/I). Our synthesized halogenated carbazole-based manganese complex with AIE properties is expected to replace precious metal materials (such as Ir, Pt, and Ru) as a new and inexpensive photosensitizer.…”