Zhang, Honglin et al. published their research in Spectrochimica Acta in 2021 | CAS: 38215-36-0

3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0) belongs to thiazole derivatives. Thiazole rings are planar and aromatic. Thiazoles are characterized by larger pi-electron delocalization than the corresponding oxazoles and have therefore greater aromaticity. The nitrogen in thiazole is sp2 hybridized and the lone pair of electrons localized on the nitrogen is less reactive due to increased aromatic character and decreased basicity. It is protonated and alkylated/acylated at nitrogen forming hydrochloride and quaternary thiazolium salt.Quality Control of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one

An effective oxygen content detection in phosphorescence of PtOEP-C6/Poly (St-co-TFEMA) was written by Zhang, Honglin;Liu, Ting;Zhang, Xiyu;Zhao, Hua;Zheng, Yangdong;Qin, Feng;Zhang, Zhiguo;Sheng, Tianqi;Tian, Ye. And the article was included in Spectrochimica Acta in 2021.Quality Control of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one The following contents are mentioned in the article:

The phosphorescence of PtOEP-C6/Poly (St-co-TFEMA) has been investigated to achieve an accurate oxygen content, which is always puzzled as its extreme temperature sensitivity. The relations of oxygen content and phosphorescence intensity ratio can be perfectly fitted by the Stern-Volmer equation at different temperatures, meanwhile the monotonic quenching constant KSV is obtained, which enables us to develop a method of temperature correction to realize the intrinsic oxygen content. Then a clear fundamental picture of the temperature quenching mechanism of PtOEP is drawn by the time-resolved spectroscopy, the temperature sensitivity of phosphorescence arises from the enhanced quenching effect of oxygen by temperature Our results provide an effective method to gain accurate oxygen content by simple optical measurement. This study involved multiple reactions and reactants, such as 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0Quality Control of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one).

3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one (cas: 38215-36-0) belongs to thiazole derivatives. Thiazole rings are planar and aromatic. Thiazoles are characterized by larger pi-electron delocalization than the corresponding oxazoles and have therefore greater aromaticity. The nitrogen in thiazole is sp2 hybridized and the lone pair of electrons localized on the nitrogen is less reactive due to increased aromatic character and decreased basicity. It is protonated and alkylated/acylated at nitrogen forming hydrochloride and quaternary thiazolium salt.Quality Control of 3-(Benzo[d]thiazol-2-yl)-7-(diethylamino)-2H-chromen-2-one

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica