The 6-carboxaldehyde-2, 2′∶6′,2″-terpyridine was synthesized and assembled on the aminosilanization quartz substrate by the Schiff base interfacial group. Then the substrate was reacted with ruthenium and 6-bromo-2,2′-bipyridine to form a new Schiff base type Ru complexes. The process of the complexes assembled was characterized by UV-Vis absorption spectra and XPS. The film exhibited photoluminescence arising from π *-t_ 2g ligand-to-metal transition of Ru complex. From the fluorescent spectra, we observed the behavior of Ru(Ⅱ) complexes is greatly affected by the schiff base ligand. The novel Schiff base ligand Ru(Ⅱ) complexes exhibited strong and pure luminescent intensity. It was different from the other type ruthenium complexes. The result shows that there are many ralations between the structure and the properties of the complex.
As an important protective group of amines and amino acids,tert-butoxycarbonyl(Boc) group was extensively used in organic synthesis.Though many mild and selective reagents could be used,there is still a need for the development of a more simple and convenient method for deprotection.In this paper,a new method for the deprotection of N-Boc group with silica gel in refluxing toluene was reported.The reactions were mostly achieved in 5 h with high yields(75%-98%).N-Boc protected indoline and benzylamine,which are not deprotected with other mild method,could be deprotected with our method in good yields(89% and 95%,respectively).Additionally the deprotection of other carbamates such as Cbz,Fmoc and ethyl carbamate wasn′t observed under same conditions.
