Design, Synthesis and Optical Properties of Tetrahedrally Silicon-Cored Phenyl-Linked Pyrazole Ligands

A novel series of tetrahedrally silicon-centered pyrazole derivatives, including bis(4-(pyrazol-1-yl)phenyl)dimethylsilane ( 1 ), bis(3-(pyrazol-1-yl)phenyl)dimethylsilane ( 2 ) and tri(4-(pyrazole-1-yl)phenyl)methylsilane ( 3 ) have been designed, synthesized and determined by FT-IR, 1 H NMR, 13 C NMR, 29 Si NMR and mass spectroscopy. These compounds are stable in moisture and have high thermal stability. The optical properties reveal that these compounds show a fluorescent emission in the blue-violet region, which could be potentially applied as blue emitters for OLEDs and utilized to construct functional MOFs with luminescent properties.