高等学校化学研究 ›› 2011, Vol. 27 ›› Issue (4): 599-603.
Synthesis and Spectroscopic Study of Coumarin Derivatives
YAO Chun-feng1,2* and ZENG He-ping1
- 1. Institute of Functional Molecule, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China;
2. Research Resources Center, South China Normal University, Guangzhou 510006, P. R. China
Synthesis and Spectroscopic Study of Coumarin Derivatives
YAO Chun-feng1,2* and ZENG He-ping1
- 1. Institute of Functional Molecule, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China;
2. Research Resources Center, South China Normal University, Guangzhou 510006, P. R. China
摘要： Five new coumarin amide derivatives were synthesized with coupling reagent, the structures of which were characterized by IR, 1H NMR, 13C NMR, MS and element analysis. Their spectral properties were studied in dichloromethane，in N,N-dimethylformamide(DMF) and in solid state. Solvent polarity has less influence on the UV-Vis maximum absorption at about 430 nm. The maximum emission wavelengths change from 464 nm to 474 nm in dichloromethane, from 476 nm to 482 nm in DMF and from 521 nm to 548 nm in solid state, respectively. The fluorescence intensities of compounds 8 and 9 were extremely strong in solvents or in solid state. Compounds 8 and 9 exhibited high fluorescenct quantumn yields in solution compared to compounds 4―7. The fluorescence lifetimes of all the compounds in solvents were measured.