摘要
A novel series of calix[4]arene derivatives were synthesized via a Pd-catalyzed Sonogashira coupling reaction from para-substituted iodobenzene and 25,27-dipropargyl-calix[4]arene. Fluorescence studies found that nitro-phenols clearly exhibited quenching effects on 2c. Moreover, we minimized the free energy of the complexes by theoretical calculations. As the result, the πr-π stacking interactions take place between the 4-nitrophenol and calix[4]arene, which may lead to the significant fluorescence quench.
A novel series of calix[4]arene derivatives were synthesized via a Pd-catalyzed Sonogashira coupling reaction from para-substituted iodobenzene and 25,27-dipropargyl-calix[4]arene. Fluorescence studies found that nitro-phenols clearly exhibited quenching effects on 2c. Moreover, we minimized the free energy of the complexes by theoretical calculations. As the result, the πr-π stacking interactions take place between the 4-nitrophenol and calix[4]arene, which may lead to the significant fluorescence quench.
基金
financially supported by the National Natural Science Foundation of China(Nos.21372092,21072072, 21102051)
PCSIRT(No.IRT0953)
Program for New Century Excellent Talent in University(No.NCET-10-0428)
self-determined research funds of CCNU from the colleges,basic research and operation of MOE(Nos.CCNU11C01002,CCNU13F005)
State Key Laboratory of Chemo/Biosensing and Chemometrics (201003)
