| In this thesis, in order to research the effect of fluorinated auxiliary ligand on the luminescence properties of iridium complexes, pyridine-2-carboxylic acid and its fluoro-substitution derivatives were used to dissociate cyclometalated iridium(Ⅲ) bridging chlorides which used 2,4-diphenylquinoline as the main ligand, then functional cyclometalated iridium(Ⅲ) complexes with pyridine-2-carboxylic acid ligand were obtained. The accident products of fluorine repaced by methoxyl were obtained under the strong alkaline condition, this series of complexes showed good photophysical properties, the quantum yield was higher than 0.14. Another series of complexes also showed good photophysical properties, the quantum yield was up to 0.41, which contained the fluoro-substitution cyclometalated iridium(Ⅲ) complexes with pyridine-2-carboxylic acid ligand. Because of the steric effects when F was at ortho-position of pyridine, the coordination bond stretched, the emission wavelength didn’t show an obvious change, but the quantum yield reduced significantly to be 0.047 and 0.060. When the F atom was at the meta-position(3 substituted, 5 substituted, 3,5-disubstituted), their effects were similar. The emission wavelength blue shifted(5.5~8.0 nm), the quantum yield increased significantly(0.30~0.41). The rule was the same when 2-phenyl pyridine was the main ligand. The intensity of these complexes’ electrogenerated chemiluminescence is 1.62~11.3 times compared to([Ru(bpy)3]2+), they also possessed good thermal stability, and the temperature of 5 % weight-loss was between 185~350 oC.The phenothiazine derivatives which contained phenothiazine groups and the cyclometalated iridium(Ⅲ) complexes which contained crown ether groups or sulfur ether groups were synthesized for detecting C u2+, Ca2+ and Hg2+. For PzCBP, when the Cu2+ concentration range was between 0~10 μ mol/L, it was linear correlation between the concentration and the intensity of fluorescence quenching, and the detection limit was 0.09 μmol/L. This was mainly due to the sulfur ether of the phenothiazine groups was oxidized to sulfoxide by Cu2+. For(DPQ)2Ir(ace H), which contained crown ether groups, when the Ca2+ concentration range was between 0~20.0 μmol/L, it was linear correlation between the concentration and the intensity of fluorescence enhancing, and the detection limit was 0.007 μmol/L. This was mainly due to the rigidity of crown ether was enhanced by Ca2+, and then the luminescence intensity increased. For(D PQ)2Ir(dbdt), which contained sulfur ether groups, when the Hg2+ concentration range was between 0~70.0 μ mol/L, there was linear correlation between the concentration and the intensity of fluorescence quenching, and the detection limit was 0.05 μmol/L. This was mainly due to the complexing action of Hg2+ and sulfur ether, which caused the fluorescence quenching.A novel low- molecular- mass organic gelator DBNPM was synthesized from 12-bromine-13,14-di nitro dehydroabietic acid methyl ester. The assembly behavior of this organogelator in solution was investigated. The organogelator induces gelation of a wide variety of organic solvents, the cr itical gelation concentration(C GC) of the prepared gelator in methanol is minimal, only 0.5 mg·mL-1. But the gelatination is the most stable in 1,4-dioxane. The scanning eletron microscope(SEM) images exhibit that the xerogels from methanol solution contain sheet str ucture and the xerogels from 1,4-dioxane solution contain net structure. The infrared spectra(FT-IR) and X-Ray diffraction analysis show that the hydrogen bonding is the main driving forces for the formation of organogels. |
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