Zhang, Xin published the artcileSynthesis of bismaleimides bearing electron-donating chromophores and their fluorescence behavior during copolymerization, Application of Bis(4-nitrophenyl)amine, the publication is Macromolecules (2003), 36(9), 3115-3127, database is CAplus.
Bismaleimides and bisitaconimides bearing diphenylmethylamine, triphenylamine, or 2,5-diphenyl-1,3,4-oxadiazole chromophores (symbolized as A(=)-D(x)-A(=)), as well as their saturated model compounds were synthesized, and their steady-state and time-resolved fluorescence spectra were investigated. These A(=)-D(x)-A(=) monomers display strong intramol. fluorescence quenching. Their fluorescence quantum yields and lifetimes are generally lower than those of their model compounds It was found that the electron-poor C:C bond of maleimide and itaconimide units (A(=)) plays a key role in the intramol. quenching, which is correlated to the electron-accepting ability of A(=) and the geometry arrangement between A(=) and electron-donating chromophore (D(x)). The intramol. quenching was attributed to an intramol. charge transfer interaction, which was confirmed by intermol. fluorescence quenching and time-resolved fluorescence studies. On the basis of the intramol. quenching, a new fluorescence approach can be developed to monitor the process of the polymerization and curing of bismaleimides, which can directly reflect the C:C bond consumption during polymerization and curing. The new fluorescence approach can be utilized not only by an intrinsic fluorescence technique but also by an extrinsic fluorescence technique.
Macromolecules 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 C15H15OP, Application of Bis(4-nitrophenyl)amine.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia