Electric Literature of C15H11NO. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Visible-to-ultraviolet (<340 nm) photon upconversion by triplet-triplet annihilation in solvents. Author is Murakami, Yoichi; Motooka, Ayumu; Enomoto, Riku; Niimi, Kazuki; Kaiho, Atsushi; Kiyoyanagi, Noriko. In this article, visible-to-UV photon upconversion (UV-UC) by triplet-triplet annihilation in the emission range shorter than 340 nm, which is previously unexplored, is presented and the relevant physicochem. characteristics are elucidated. Investigations were carried out in several deaerated solvents using acridone and naphthalene derivatives as a sensitizer and emitter, resp. Both upconversion quantum efficiency and sample photostability under continuous photoirradiation strongly depended on the solvent. The former dependence is governed by the solvent polarity, which affects the triplet energy level matching between the sensitizer and emitter because of the solvatochromism of the sensitizer. To elucidate the latter, first we investigated the photodegradation of samples without the emitter, which revealed that the sensitizer degradation rate is correlated with the difference between the frontier orbital energy levels of the sensitizer and solvent. Inclusion of the emitter effectively suppressed the degradation of the sensitizer, which is ascribed to fast quenching of the triplet sensitizer by the emitter and justifies the use of ketonic sensitizers for UV-UC in solvents. A theor. model was developed to acquire insight into the observed temporal decays of the upconverted emission intensity under continuous photoirradiation The theor. curves generated by this model fitted the exptl. decay curves well, which allowed the reaction rate between the emitter and solvent to be obtained. As far as I know, this compound(92-71-7)Electric Literature of C15H11NO can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica