| DC 欄位 |
值 |
語言 |
| DC.contributor | 化學學系 | zh_TW |
| DC.creator | 宋盈進 | zh_TW |
| DC.creator | Ying-Chin Sung | en_US |
| dc.date.accessioned | 2018-7-24T07:39:07Z | |
| dc.date.available | 2018-7-24T07:39:07Z | |
| dc.date.issued | 2018 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=105223046 | |
| dc.contributor.department | 化學學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本論文使用中溫水熱法合成含有不同比例之Eu3+和Tb3+組成配位中心以及1, 4-cyclohexanedicarboxylate (C8H10O4, CHDC)組成的配位聚合物，表示為R2(CHDC)3。合成之晶體以單晶及粉末X光繞射鑑定其結構及純度，感應耦合電漿原子發射光譜分析儀(ICP-AES)可以定量其不同配位中心之比例。本論文主要利用光致放光光譜、激發光譜及時間解析光譜再探討EuxTb2-x(CHDC)3一系列樣品的能量轉移機制與速率。由光譜分析確認了EuxTb2-x(CHDC)3樣品中，Tb3+傳遞能量給Eu3+是以上能階轉移的機制傳遞能量。本論文參考EuxTb2-x(CHDC)3之Eu3+訊號上升時間資訊後，對不同激發波長之Tb3+放光衰退時間進行動力學模型的分析，藉由分析數據得到能量轉移速率常數與相關物理參數，發現其Tb3+- Tb3+之能量轉移速率有極值，並成功地解釋Tb3+→Eu3+之能量轉移效率。 | zh_TW |
| dc.description.abstract | This work adopted the mid-temperature hydrothermal method to synthesize the coordination polymers with different compositions of Eu3+ and Tb3+ as the coordination center and 1,4-cyclohexanedicarboxylate (C8H10O4, CHDC) as the ligands. Their structure and purity were verified by single crystal and powder X-ray diffraction data and the exact composition of Eu3+ and Tb3+ was determined by the Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Photoluminescence, excitation, and time-resolved spectra of these EuxTb2-x(CHDC)3 compounds were obtained for re-investigating the energy transfer mechanisms and rates. The analysis of spectroscopic data indicates that the energy transfer from Tb3+ to Eu3+ is an upper state energy migration instead of photon energy transfer process. Moreover, the emission decay curves of Tb3+ and the rising curves of Eu3+ at different excitation wavelengths were acquired and analyzed by kinetics models. These results show there is a concentration limitation for energy transfer efficiency and our model successfully explains the observed Tb3+→Eu3+ relative energy transfer efficiency. | en_US |
| DC.subject | 光譜 | zh_TW |
| DC.subject | 鑭系元素 | zh_TW |
| DC.subject | 能量轉移 | zh_TW |
| DC.title | 以光譜學方法再探討含銪鋱配位聚合物內能量轉移機制 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |