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| Autor: | Yu-Qing Lin, 林予晴 |
|---|---|
| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 This work adopted mid-temperature hydrothermal method to synthesize coordination polymers, R2(C8H10O4)3, (R= Eu or Tb, and C8H10O4: 1, 4-cyclohexanedicarboxylate, CHDC). Single-crystal and powder x-ray diffraction (XRD) data were collected for confirming their structure and purity. Inductively Coupled Plasma Atomic Emission Spectra (ICP-AES) were also obtained to verify the compositions of Eu3+ and Tb3+. We have acquired the photoluminescence (PL), excitation, and time-resolved spectra of several EuxTb2-x(CHDC)3 compounds. The analysis of these spectra shows that the energy transfer is indeed correlated to the contact probability between Eu3+ and Tb3+ as well as to the sensitization of CHDC ligands. Kinetics models were used to fit the rising temporal profiles of Eu3+ and the decay curves of Tb3+. The results indicate the energy transfer is three dimensional (3D). The rate constants and related parameters were successfully determined. The energy transfer efficiency can be well explained by these results. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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