Hirauchi, Kazumasa published the artcileStudies on the phosphorimetric determination of amines with halonitro compounds. II. Substituent effect on the fluorescence and phosphorescence of 4′-substituted 4-nitrodiphenylamines and 2-(substituted anilino)-5-nitropyridines, Formula: C12H9N3O4, the publication is Chemical & Pharmaceutical Bulletin (1979), 27(5), 1120-4, database is CAplus.
Substituent effects on the fluorescence and phosphorescence of 4′-substituted 4-nitrodiphenylamines and 2-(substituted anilino)-5-nitropyridines at 77 K were examined Satisfactory linear relationships between Hammett’s substituent constant σ and the lowest excited singlet energy levels, the lowest excited triplet energy levels, and the triplet decay constants of the compounds were obtained.
Chemical & Pharmaceutical Bulletin published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Formula: C12H9N3O4.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia