Coordination polymer based on 2,5-thiophenedicarboxylic acid and lanthanum and preparation method thereof
A thiophene dicarboxylic acid and coordination polymer technology, applied in the field of rare earth metal coordination polymers, can solve many problems
Inactive Publication Date: 2018-07-31
福建省农业科学院农业质量标准与检测技术研究所
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Problems solved by technology
At present, there are not many reports on the construction of metal-organic coordination polymers using 2,5-thiophene dicarboxylic acid as a ligand.
Method used
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Embodiment 1
[0017] Weigh 0.1mmol La(NO 3 ) 3 ·6H 2 O and 0.1 mmol H 2 TDC was added to 10ml of H 2 O, under stirring conditions, adjust the pH value to 4.5 with 0.2mmol / L NaOH. The mixed solution was introduced into a polytetrafluoroethylene tube, sealed in a stainless steel reaction kettle, heated at 180°C for 72 hours, and then cooled to room temperature at a rate of 4°C / min. Colorless needle-shaped crystals were washed out, filtered, and used The mother liquor was washed and dried, and the yield was 20%. Elemental analysis: theoretical value: C, 26.18; H, 1.10; S, 8.74; experimental value C, 26.49; H, 1.02; S, 8.65.
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The invention provides a coordination polymer based on 2,5-thiophenedicarboxylic acid (H2TDC) and lanthanum. The molecular formula of the coordination polymer is {[La2(TDC)2(SUC)]}n. The coordinationpolymer is obtained through a hydrothermal method comprising the following steps of adding La(NO3)3.6H2O and a H2TDC ligand into H2O according to an amount-of-substance ratio of 1 to 1, and reacting for 72 hours at 180 DEG C in a hydrothermal reaction kettle; cooling to room temperature, so as to obtain a colorless acicular crystal, washing by using mother liquor, and carrying out vacuum drying. The coordination polymer which is provided by the invention and is constructed with the H2TDC and lanthanum ions has potential application value in the fields of fluorescence, magnetism, adsorption anddrug loading, and the like.
Description
technical field [0001] The present invention relates to rare earth metal coordination polymers, in particular to a coordination polymer based on 2,5-thiophene dicarboxylic acid and rare earth metals, specifically a coordination polymer based on 2,5-thiophene dicarboxylic acid and lanthanum Polymers and methods for their preparation. Background technique [0002] Metal-organic complexes are metal-organic framework materials with one-dimensional, two-dimensional or three-dimensional structures synthesized by self-assembly of metal ions and organic ligands under certain conditions. As a new type of functional material, metal-organic complexes have the characteristics of high porosity, plastic structure, and uniform pore size. Due to its unique porous structure and easy preparation method, it has potential application value in the fields of fluorescence, magnetism, adsorption and drug loading. [0003] Ligand 2,5-thiophenedicarboxylic acid is an important intermediate in the s...
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CPCC08G83/008
Inventor 郑云云傅建炜苏德森何萍黄锐敏
Owner 福建省农业科学院农业质量标准与检测技术研究所