A new difluoroboron bis-beta-diketonate with high quantum yield and intense photoluminescence

作者：Wang, Dun-Jia^*; Pi, Yan; Xu, Ben-Po; Wei, Xian-Hong; Hu, Yan-Jun

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2015, 9(1-2): 79-82.

• Difluoroboron complex
• Bis-beta-diketone
• Photoluminescence
• Quantum yield
• Luminescence lifetime

A new difluoroboron bis-beta-diketonate was synthesized by Claisen condensation of 2-butanone with diethyl 2,6-pyridinedicarboxylate and followed by complexation with boron trifluoride etherate. Its structure was confirmed by elemental analysis, IR, NMR, ESI-MS and UV-vis spectroscopy. Its photoluminescence behavior was studied via fluorescence spectroscopy in solution and solid state. The results indicated that this complex had strong fluorescence emission in the visible with high quantum yield (phi(u) = 0.90) in DMSO solution. It exhibited the stronger photoluminescence intensity in the powder, and its emission peak was red-shifted 132 nm in comparison with that in solution, which due to the intermolecular interactions in the solid state. Meanwhile, its lifetime value (tau) was calculated according to the luminescence decay curve in the solid state.

• 出版日期2015-2
• 单位湖北师范大学