Synthesis and spectroscopic properties of novel fluorescent compounds containing bis-pyrazole ring.
A series of pyrazoline derivatives containing pyrazole group were synthesized and characterized by means of (1)H NMR, FT-IR, MS and elemental analysis, and their UV-vis absorption behavior and fluorescent properties were also measured. Moreover, the influence of metal ions on spectral properties of synthetic products was examined with compound A₅ as an example. It has been found that all synthetic pyrazoline derivatives show two remarkable absorption peaks at about 260 and 360 nm and the maximum emission peak at 445-467 nm. Especially, the joined of Co(2+) can quench the fluorescence of compound A₅ obviously.
Fine Chemistry and Engineering Research Institute, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, People's Republic of China.
Tiegang
T
Ren
Jie
J
Wang
Guihui
G
Li
Yongzhe
Y
Li
D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D011522:Protons; D011720:Pyrazoles / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
D005456:Fluorescent Dyes; D011522:Protons; D011720:Pyrazoles; C031280:pyrazole