| Organometallic complex has both inorganic and organic properties. Its structure is affected by the the interaction of inorganic ions and organic ligands, which makes it possible of artificial adjustment and design of its sturcture and obtain functional material accordingly. Organometallic complex has extremely broad application range, including gas storage and adsorption, gas detection, ionic exchange, catalysis, luminescent material etc. Fluorescent probe technique, which ragarded as a novel application of organometallic complex, has quick response(short test time), high sensitivity, specific selectivity and low cost, which makes it stands out. We noticed that the scope of the detected object still very limited. Therefore the reasonably design and synthesize of fine fluorescent property-based organometallic complex is very valuble.This article primarily engaged in the research of the design and growth of transition metal-based organometallic complex as well as analysis its structure and fluorescent probe property. In consideration of practical application, we choose 3,3’,5,5’-azobenzenetetracarboxylic acid as main ligand due to it has large conjugate structure which is propitious for luminescence. We also use nitro-organic compounds such as phenanthroline(phen), piperazidine(pip), triethylenediamine(DABCO) as auxiliary ligands. By means of repeated siftings of reaction conditions, we managed the fabrication of 9 completely fresh transition metal-based organometallic complex, including:1. Coordination compound 1~4 have zero dimensional structure, chemical formula are : [Co(phen)(H2O)3]2(aobtc)·4H2O(1), [Ni(phen)(H2O)4](H2aobtc)·H2O(2), [Co(phen)(H2O)2(H2abtc)]2·2H2O(3), [Cd(H2O)3(aobtc)]2 ·2(pip) ·2H2O(4)。2. Coordination compound 5 have unidimensional structure, chemical formula is : [Zn(phen)(H2O)]2(abtc)·2H2O(5),3. Coordination compound 6~8 have two dimensional structure, chemical formula are : Mn(DMF)(H2O)2(H2abtc)·2H2O(6), Cd(H2O)(H2aobtc)(DABCO)(7), [Mn6(H2O)8(aobtc)3] ·2H2O(8)4. Coordination compound 9 have three-dimensional structure, chemical formula is : [Co2(phen)(DMF)(aobtc)]·DMF(9).And then analysised its structures of crystals by the test of single-crystal X-ray diffraction. Also powder X-ray diffractions(PXRD),thermogravimetic analysis(TG), infrared(IR) spectra and fluorescence properties of the complexes are investigated by way of discuss the intimate connection between reaction conditions and structural diversity, as well as fluorescence properties.This thesis discussed the reaction conditions and structural diversity of the synthesised coordination polymers in details. The critical factor of the reaction conditions(influence of auxiliary ligands, pH value and reaction temperature) was analysised. Tentatively studied its fluorescence properties and feasibility of be used as fliorescent probe. Compound 1, 2, 4, 6, 8 all have fine selectivity of nitrobenzene(NB), which can be used as fluorescent probe, and the response effect is related to compound’s porous structure. Meanwhile, high dimensional compounds(compounds 6 and 8) have a higher sensitivity than low dimensional compounds(compounds 1, 2 and 4), which means they have a lower detection limit. Above work have broadened the range of application of fluorescent probe technique, and have established foundation of making the coordination polymers applied in practical life and production. |
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