研究目的
To synthesize and characterize two new olefin-Cu(I) coordination polymers based on 2,5-dimethyl piperazine, and investigate their fluorescent properties.
研究成果
Two stable one-dimensional olefin-Cu(I) complexes with π-π stacking interactions were successfully synthesized and characterized. They exhibit reddish orange fluorescence and may be applicable in adjusting white LEDs due to their stability and fluorescent properties.
研究不足
The complexes did not dissolve in common solvents like water, DMF, ethanol, methanol, or diethyl ether, which may limit their application in solution-based systems. Complex 2 was noted to be less stable than complex 1, with lower thermal stability up to 400°C.
1：Experimental Design and Method Selection:
The study employed solvothermal synthesis methods to prepare the coordination polymers, using specific reactants and conditions to facilitate crystal growth. Theoretical models for structural analysis were based on X-ray diffraction techniques.
2：Sample Selection and Data Sources:
Samples were synthesized from commercially available reagents, including CuCl, CuBr, and 2,5-dimethyl piperazine, with DMBVBP ligand prepared in-house. Data were collected from elemental analysis, IR spectroscopy, XRD, and fluorescence measurements.
3：List of Experimental Equipment and Materials:
Equipment included Vario EL III elemental analyzer, spectrofluorometer, Netszch TGA 209 F3 thermogravimeter, Oxford Xcalibur E diffractometer. Materials included CuCl, CuBr, 2,5-dimethyl piperazine, chloroform, 1-chloromethyl-4-vinyl-benzene, K2CO3, methanol, water.
4：Experimental Procedures and Operational Workflow:
DMBVBP was synthesized by reacting 2,5-dimethyl-piperazine with 1-chloromethyl-4-vinyl-benzene and K2CO3 in chloroform. Complexes 1 and 2 were synthesized by solvothermal reactions of DMBVBP with CuCl or CuBr in methanol and water at 62°C for 2-3 days, followed by characterization steps.
5：Data Analysis Methods:
Data were analyzed using software for XRD (SADABS, SHELXS-97), with structural refinements and statistical methods applied to interpret results.
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