Energy transfer in and fluorescence studies of the Eu-Tb doped BPA-phen system |
| |
| Authors: | Guangbo Xie Haibang Zhang Zijun Zhang Juntong Liu Tingju Li |
| |
| Affiliation: | 1. School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, People’s Republic of China;2. School of Materials Science and Engineering, Dalian University of Technology, Dalian, People’s Republic of China |
| |
| Abstract: | To enhance the red emission efficiency of Eu3+ complexes, Eu/Tbx(BPA)3phen] (BPA?=?bisphenol A, phen?=?1,10-phenanthroline) is designed and synthesized. The complexes are characterized fully and their luminescence properties are evaluated. Co-fluorescence is detected in the Eu/Tbx(BPA)3phen complexes, and the existence of Tb3+ enhances the luminescence intensity of the central Eu3+ because of the intramolecular energy transfer from the 5D4 level of Tb3+ to the 5D0 level of Eu3+. The luminescence intensity of europium ions at 615?nm is the highest for Eu/Tb1(BPA)3phen. To improve the thermal stabilities and mechanical properties of pure complexes, Eu/Tb1(BPA)3phen/PAN (PAN?=?polyacrylonitrile) is used to fabricate fibres by electrospinning. Compared with Eu/Tb1(BPA)3phen (τ?=?1.1087?ms), the fibres have a longer fluorescence lifetime of 1.533?ms. The fibres also retain a high quantum yield of 47.16%. Thus, the flexible luminescent fibres have potential applications in many fields. |
| |
| Keywords: | Bisphenol A energy transfer luminescence electrospinning |
|
|
