Herbich, Jerzy published the artcileModification of the intramolecular electron transfer by hydrogen bonding: 4-(dialkylamino)pyrimidines, Formula: C6H9N3, the publication is Journal of Luminescence (1992), 54(3), 165-75, database is CAplus.
The dual fluorescence (a and b) and the picosecond kinetics of the twisted intramol. charge transfer (TICT) state formation in 4-(dialkylamino)pyrimidines were studied in polar solvents. In nitriles as solvents, 2 emitting states of 4-(N,N-dimethylamino)pyrimidine or 4-(N,N-diethylamino)pyrimidine reached equilibrium within 20 ps. In alcs. the TICT emission a is attributed to the species hydrogen-bonded at the ring atom N1. The decay of the short wave fluorescence b is clearly multi- or non-exponential; it is assigned to several other complexes, some of which decay fast, not being simply kinetically coupled with the emitting form a. The nature of the fast deactivation channel appearing in alcs. as solvents is discussed taking into account the Mataga-Kakitani discrimination of the Marcus inverted regions for the charge recombination and charge shift electron transfer.
Journal of Luminescence published new progress about 31401-45-3. 31401-45-3 belongs to pyrimidines, auxiliary class Pyrimidine,Amine, name is N,N-Dimethylpyrimidin-4-amine, and the molecular formula is C6H9N3, Formula: C6H9N3.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia