6,6"-Terpyridylene bridged cyclic porphyrin dimer 2Ni,trimer 3Ni,tetramer 4Ni and pentamer 5Ni were obtained through Suzuki-Miyaura coupling reaction of/~,jB'-diboryl Ni(II)porphyrin with 6,6"-dibromo-2,...6,6"-Terpyridylene bridged cyclic porphyrin dimer 2Ni,trimer 3Ni,tetramer 4Ni and pentamer 5Ni were obtained through Suzuki-Miyaura coupling reaction of/~,jB'-diboryl Ni(II)porphyrin with 6,6"-dibromo-2,2':6',2"-terpyridine.Free base porphyrin nanorings 2H-SH were obtained by demetallation of 2Ni-SNi with sulfuric acid in CHCl_(3)and then were converted into 2Zn-SZn upon treatment with Zn(OAc)2 in quantitative yields,respectively.All of these newly synthesized porphyrin nanorings were characterized by high-resolution mass spectrometry and 1H NMR spectroscopy.The photophysical properties of porphyrin nanoring were examined by UV-vis and fluorescence spectra.The electrochemical properties of 2Ni-SNi were investigated by cyclic voltammetry and differential pulse voltammetry.The UV-vis absorption spectra and fluorescence spectra of these cyclic porphyrin arrays indicate that there exist unique electronic interactions between the constituent porphyrin units in each ring.Electrochemical analysis shows that the trimer 3Ni exhibit different redox behavior,which indicate that the porphyrin units in 3Ni are presumably more coplanar than in other cyclic oorohvrin arrays.展开更多
基金supported by the National Natural Science Foundation of China(No.21272065)the Opening Fund of Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research(Ministry of Education of China),Hunan Normal University(No.KLCBTCMR2015-07)+2 种基金the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education MinistryScientific Research Fund of Hunan Provincial Education Department(No.16A125)the National Natural Science Foundation of China(No.21602058)
文摘6,6"-Terpyridylene bridged cyclic porphyrin dimer 2Ni,trimer 3Ni,tetramer 4Ni and pentamer 5Ni were obtained through Suzuki-Miyaura coupling reaction of/~,jB'-diboryl Ni(II)porphyrin with 6,6"-dibromo-2,2':6',2"-terpyridine.Free base porphyrin nanorings 2H-SH were obtained by demetallation of 2Ni-SNi with sulfuric acid in CHCl_(3)and then were converted into 2Zn-SZn upon treatment with Zn(OAc)2 in quantitative yields,respectively.All of these newly synthesized porphyrin nanorings were characterized by high-resolution mass spectrometry and 1H NMR spectroscopy.The photophysical properties of porphyrin nanoring were examined by UV-vis and fluorescence spectra.The electrochemical properties of 2Ni-SNi were investigated by cyclic voltammetry and differential pulse voltammetry.The UV-vis absorption spectra and fluorescence spectra of these cyclic porphyrin arrays indicate that there exist unique electronic interactions between the constituent porphyrin units in each ring.Electrochemical analysis shows that the trimer 3Ni exhibit different redox behavior,which indicate that the porphyrin units in 3Ni are presumably more coplanar than in other cyclic oorohvrin arrays.
