《Ground- and Excited-State Properties of Iron(II) Complexes Linked to Organic Chromophores》 was written by Dierks, Philipp; Paepcke, Ayla; Bokareva, Olga S.; Altenburger, Bjoern; Reuter, Thomas; Heinze, Katja; Kuehn, Oliver; Lochbrunner, Stefan; Bauer, Matthias. HPLC of Formula: 5471-63-6 And the article was included in Inorganic Chemistry in 2020. The article conveys some information:
Two new bichromophoric complexes, [Fe(bim-ant)2]2+ and [Fe(bim-pyr)2]2+ ([H2-bim]2+ = 1,1′-(pyridine-2,6-diyl)bis(3-methyl-1H-imidazol-3-ium); ant = 9-anthracenyl; pyr = 1-pyrenyl), are investigated to explore the possibility of tuning the excited-state behavior in photoactive iron(II) complexes to design substitutes for noble-metal compounds The ground-state properties of both complexes are characterized thoroughly by electrochem. methods and optical absorption spectroscopy, complemented by time-dependent d. functional theory calculations The excited states are investigated by static and time-resolved luminescence and femtosecond transient absorption spectroscopy. Both complexes exhibit room temperature luminescence, which originates from singlet states dominated by the chromophore (1Chrom). In the cationic pro-ligands and in the iron(II) complexes, the emission is shifted to red by up to 110 nm (5780 cm-1). This offers the possibility of tuning the organic chromophore emission by metal-ion coordination. The fluorescence lifetimes of the complexes are in the nanosecond range, while triplet metal-to-ligand charge-transfer (3MLCT) lifetimes are around 14 ps. An antenna effect as in ruthenium(II) polypyridine complexes connected to an organic chromophore is found in the form of an internal conversion within 3.4 ns from the 1Chrom to the 1MLCT states. Because no singlet oxygen forms from triplet oxygen in the presence of the iron(II) complexes and light, efficient intersystem crossing to the triplet state of the organic chromophore (3Chrom) is not promoted in the iron(II) complexes. Two new multichromophoric iron(II) pyridyl N-heterocyclic carbene complexes functionalized with anthracene and pyrene in its backbones are presented. Ground- and excited-state characterization in combination with time-dependent d. functional theory shows that the triplet metal-to-ligand charge-transfer lifetime is prolonged efficiently, and an antenna effect is observed from the excited chromophore to the singlet metal-to-ligand charge-transfer state. In the experiment, the researchers used 1,3-Diphenylisobenzofuran(cas: 5471-63-6HPLC of Formula: 5471-63-6)
1,3-Diphenylisobenzofuran(cas: 5471-63-6) can be used as a fluorescent probe for detection of superoxide anion radical (O2−) inside the membrane lipid layer by DPBF fluorescence quenching method. 1,3-Diphenylisobenzofuran(DPBF) can be used as quencher during the photoinactivation of TA-3 mouse mammary carcinoma cells containing hematoporphyrin.HPLC of Formula: 5471-63-6
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem