Eu(III)-Fe(II) luminous nano-tube and its preparation method and use

Abstract

An Eu(III)-Fe(II) luminescent nanometer tube, its production and use are disclosed. The structural formula is (Eu(PDA)3Fe1.5(H2O)3).1.5H2O, PDA=2, 6-pyridine diacid ligand. MgC12 is added into N,N'-dimethyl-methane amide solution, transmitting-peak strength is increased with Mg2+ ion concentration increasing. It has stable three-dimensional nanometer tubular structure; it can be used as Mg2+ ion fluorescent mark and used for biological molecular discrimination.

Description

【Technical field】 [0001] The present invention relates to the preparation method of nano-luminescent material, especially a kind of Eu(III)-Fe(II) luminescent nano-tube with stable three-dimensional nano-tubular structure, and can be used as fluorescent label of magnesium ion and its preparation method and biomolecule recognition applications. 【Background technique】 [0002] In recent years, the research on rare earth-transition mixed metal coordination polymers has opened up a new field for exploring new multifunctional materials such as catalysis, adsorption, fluorescent labeling, and magnetic storage. However, so far, there are few reports on rare earth-transition mixed metal coordination polymers in the literature, and the three-dimensional structure is particularly rare [P.Cheng et al., Angew.Chem.Int.Ed., 934, 42, 2003 ; P. Cheng et al., J. Am. Chem. Soc., 126, 3012, 2004]. The reason why the structures of rare earth-transition mixed metal coordination polymers are r...

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Problems solved by technology

However, so far, there are few reports about rare earth-transition mixed metal coordination polymers in the literature, and the three-dimensional structure is particularly rare [P.Cheng et al., Angew.Chem.Int.Ed., 934, 42, 2003 ; P. Cheng et al., J. Am. Chem. Soc., 126, 3012, 2004]

The reason why there are few reports on the structures of rare earth-transition mixed metal coordination polymers is that the following challenges are faced in the synthesis of such compounds: a) The high coordination number of rare earth ions makes it difficult to predict and control the products

In addition, it is also easy to make the formed lattice interpenetrate with each other, so it is difficult to observe the effective pore structure in the product; b) the competition reaction between rare earth and transition metal ions and the same ligand often leads to the product containing only one kind of metal instead of The designed mixed metal; c) It is difficult to choose a ligand with a good match in rigidity and coordination ability, because the rigidity and coordination ability of the ligand are also crucial to the topology of the polymer

[0003] On the other hand, the 4f orbital of rare earth ions belongs to the inner orbital, affected by the shielding effect, the impact of this change on the chemical properties of rare earth elements is very small, resulting in the similarity of the chemical properties of rare earth elements, but this The similarity in chemical properties cannot conceal the spectroscopic and applied individuality of these elements

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