Quality Control of Diphenylmethanamine. Recently I am researching about AGGREGATION-INDUCED EMISSION; METAL-IONS; SENSORS; HG2+; COORDINATION; ZN(II), Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21671022]. Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Zheng, HW; Kang, Y; Wu, M; Liang, QF; Zheng, JQ; Zheng, XJ; Jin, LP. The CAS is 91-00-9. Through research, I have a further understanding and discovery of Diphenylmethanamine
Three AIE (aggregation-induced emission)-ESIPT (excited-state intramolecular proton transfer) active 2-(2-hydroxyphenyl)benzothiazole derivatives, HL1, HL2 and HL3 with one, two and three rotatable phenyl groups, were obtained and characterized. Their AIE properties in THF/HEPES solution were investigated in detail. HL2 shows the best AIE performance with 71-fold fluorescence enhancement, while HL3 only shows a 9-fold enhancement. With the AIE property, HL1 and HL2 could act as fluorescence chemosensors to detect Cu2+ ions via the turn off mode in THF/HEPES media. With the ESIPT property, HL1 and HL2 could also detect Zn2+ ions via the turn on mode in EtOH/HEPES media. During the detection process, both demonstrate rapid response and high contrast before and after the addition of metal ions. The species formed in the detection system were investigated. The results of X-ray single-crystal diffraction confirm that Zn2+ is coordinated with the oxygen atom and Schiff base nitrogen atom instead of the benzothiazole nitrogen atom in the tetrahedron geometry. Moreover, the chemosensors were successfully constructed into handy fluorescence test papers for Cu2+ and Zn2+ detection.
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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics