Cheng, Jinling published the artcileA Single 2-(2′-Hydroxyphenyl)benzothiazole Derivative Can Achieve Pure White-Light Emission, Application of 2-Hydroxy-4-(trifluoromethyl)benzoic acid, the publication is Chemistry – An Asian Journal (2014), 9(11), 3215-3220, database is CAplus and MEDLINE.
The synthesis and photophysics of two novel 2-(2′-hydroxyphenyl)benzothiazole (HBT) derivatives are presented. The electron-withdrawing trifluoromethyl (CF3) group in compound 1 facilitates the deprotonation of the phenolic hydroxy group. Well-resolved triple fluorescence from the enol, keto, and phenolic anion, which ranges from 350 to 600 nm, was detected for 1 in ethanol, which marks the first time triple fluorescence from an excited-state intramol. proton transfer (ESIPT) mol. was reported. Both triphenylamine and CF3 were introduced into derivative 2. Intramol. charge transfer and the “red-edge effect” resulted in the bathochromic shift of dual fluorescence of 2. Triple fluorescence was also observed for 2 in ethanol. In mixed acetonitrile and ethanol, pure white-light emission with CIE coordinates of (0.33, 0.33) and a quantum yield of 0.25 was achieved for 2. This work provides a new avenue for the rational design of an ESIPT mol. to achieve white-light generation under mild conditions.
Chemistry – An Asian Journal published new progress about 328-90-5. 328-90-5 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Phenol, name is 2-Hydroxy-4-(trifluoromethyl)benzoic acid, and the molecular formula is C8H5F3O3, Application of 2-Hydroxy-4-(trifluoromethyl)benzoic acid.
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