By using 1-methyl-2-formyl-5 -Y-substituted pyrrole (4-nitrophenyl)hydrazones as a model for nitrogen-containing heterocyclic aromatic compounds, the emission wavelength [lambda(max(em))] values df their fluorescence ...By using 1-methyl-2-formyl-5 -Y-substituted pyrrole (4-nitrophenyl)hydrazones as a model for nitrogen-containing heterocyclic aromatic compounds, the emission wavelength [lambda(max(em))] values df their fluorescence spectra have been measured. Correlation results show that the Delta E-em values are mainly affected by polar effects, but spin-delocalizatin effects also exist.展开更多
Preparation of twelve 1-methyl-2-formyl-5-substituted pyrroles (2a–1), with five of them as new compounds, is described. Their derivatives, i.e., 1-methyl-2-formyl-5-substituted pyrrole phenyl hydrazones (3a–1) and ...Preparation of twelve 1-methyl-2-formyl-5-substituted pyrroles (2a–1), with five of them as new compounds, is described. Their derivatives, i.e., 1-methyl-2-formyl-5-substituted pyrrole phenyl hydrazones (3a–1) and 1-methyl-2-formyl-5-substituted pyrrole (4-nitrophenyl) hydrazones (4a–1) are all new compounds. They have also been prepared and further identified.展开更多
文摘By using 1-methyl-2-formyl-5 -Y-substituted pyrrole (4-nitrophenyl)hydrazones as a model for nitrogen-containing heterocyclic aromatic compounds, the emission wavelength [lambda(max(em))] values df their fluorescence spectra have been measured. Correlation results show that the Delta E-em values are mainly affected by polar effects, but spin-delocalizatin effects also exist.
基金Project supported by the National Natural Science Foundation of China (No. 29472075)the Postdoctoral Science Foundation of China
文摘Preparation of twelve 1-methyl-2-formyl-5-substituted pyrroles (2a–1), with five of them as new compounds, is described. Their derivatives, i.e., 1-methyl-2-formyl-5-substituted pyrrole phenyl hydrazones (3a–1) and 1-methyl-2-formyl-5-substituted pyrrole (4-nitrophenyl) hydrazones (4a–1) are all new compounds. They have also been prepared and further identified.
