Porphyrin–boron diketonate dyads

Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores

“…The final compounds were purified by crystallization. 1 H, 19 F and 13 C NMR spectra were recorded on Bruker 300 or 500 [300. 13 MHz ( 1 H), 282.41 ( 19 F), 75.47 MHz ( 13 C) or 500.…”

“…Complexation with boron is widely used in the synthesis of luminescent dyes. Boron is a nontoxic alternative to transition metals, and boron complexes have been studied for their excellent photoluminescent properties [ 15 , 16 , 17 , 18 , 19 ]. The latter are cheaper than certain transition metals, and because of the strong covalent bonds with the ligand, they may allow the synthesis of more stable luminescent materials [ 20 , 21 , 22 ].…”

Multicomponent Synthesis of Luminescent Iminoboronates

“…3.4. 10,12-Dihydroxy-7-phenyl-5H,7H-7λ 4 ,14λ 4 -benzo[d]benzo [5,6][1,3,2]oxazaborinino [2,3-b][1,3,2] oxazaborinin-5-one 1d 2,4,6-Trihydroxybenzaldehyde (1 equiv, 0.5 mmol, 77 mg) was dissolved in MeOH (20 mL). Anthranilic acid (1 equiv, 0.5 mmol, 69 mg) was added, followed by phenylboronic acid (1 equiv, 0.5 mmol, 61 mg), and the reaction mixture was refluxed for 2 h. After cooling down to room temperature, the solid is collected by filtration, washed with MeOH, and dried in air.…”

“…Boron complexes based on N and O donor ligands have been widely studied due to their ease of preparation and versatility [ 1 ]. In terms of luminescent properties, boron complexes are dominated by boron dipyrromethenes (BODIPYs) [ 2 ], but recently, boron diketonates [ 3 , 4 , 5 ] and ketoiminates [ 6 ] have emerged as promising alternatives. Moreover, boranils appeared as more versatile [ 7 ], being very easily prepared from building blocks that can be modified to tune the properties of the final complex [ 8 , 9 ].…”

“…10,12-Dimethoxy-7-phenyl-5H,7H-7λ4 ,14λ4 -benzo[d]benzo[5,6][1,3,2]oxazaborinino[2,3-b][1,3,2]oxazaborinin-5-one 1e 3,5-Dimethoxysalicylaldehyde (1 equiv, 1 mmol, 182 mg) was dissolved in MeOH (20 mL).…”