摘要:
The complexes C,C-trans-[Pt(C<^>N<^>C)L](z) [C<^>N<^>C is bisdeprotonated 2,6-diphenylpyridinate (dppy(2-)); L = CO, Me2SO (dmso), ethylenediamine (en), CN-, pyrazine (pz), P(C6F5)(3), 4,4'-bipyridine (4,4'-bpy)] were synthesized and characterized by H-1 NMR, electronic, and emission spectroscopy. Spectral-luminescence properties of the chromophoric group (platinum-cyclometalating ligand) in the CC-trans-biscyclometalated complexes depend on the nature of the noncyclometalating ligand L, which is explained by its donor-acceptor effects on the form of existence of the complex in solution.