| DC 欄位 |
值 |
語言 |
| DC.contributor | 化學學系 | zh_TW |
| DC.creator | 黃致瑄 | zh_TW |
| DC.creator | Chih-Hsuan Huang | en_US |
| dc.date.accessioned | 2021-7-29T07:39:07Z | |
| dc.date.available | 2021-7-29T07:39:07Z | |
| dc.date.issued | 2021 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=108223040 | |
| 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 | 本論文主要研究含三價釤之配位聚合物中藍位移(blue shift)光譜訊號之形成機制與相關之能量轉移現象。這類配位聚合物以三價釤(Sm3+)、鋱(Tb3+)、釔(Y3+)為配位中心，1,4-cyclohexanedicarboxylate (C8H10O4，簡稱CHDC)為配位基，利用中溫水熱法合成配位聚合物。先前研究中發現以560 nm光源激發含Sm3+配位聚合物放光光譜中有530 nm之藍位移訊號，本論文以激發光譜(excitation spectra)、光致放光光譜(photoluminescence spectra)、時間解析光譜(time-resolved spectra)、光功率依賴性(power dependence)等實驗對此訊號進行研究。在此類配位聚合物中，530 nm訊號主要來自於單光子熱譜帶躍遷(hot band transition)至Sm3+ 4F3/2而放光，且配位基會轉移能量給Sm3+之4F3/2。在不同Sm3+濃度之配位聚合物中，其530 nm訊號放光衰退生命期有明顯差異，原因可能是在配位聚合物中存在兩種交互遲緩(cross relaxation)機制。而含Sm3+與Tb3+的配位聚合物中，更有Tb3+→Sm3+的能量轉移到Sm3+ 4F3/2 激發態。此外，對比含Y3+的配位聚合物，我們發現可能有少部分的Sm3+透過Tb3+傳遞能量轉移到遠端的Sm3+。 | zh_TW |
| dc.description.abstract | This thesis investigates the blue shift signal in the emission spectra of coordination polymers containing trivalent samarium (Sm3+). These coordination polymers were synthesized using mid-temperature hydrothermal technique and have trivalent samarium (Sm3+), terbium (Tb3+), or yttrium (Y3+) as the coordination center and 1,4-cyclohexanedicarboxylate (C8H10O4，CHDC) as ligands. Previous study observed a blue shift signal at 530 nm in the emission spectra of coordination polymers containing Sm3+ at 560 nm excitation. This work acquires excitation spectra, photoluminescence spectra, time-resolved spectra, and power dependence measurements of these compounds. In these coordination polymers, the 530 nm blue shift signal results from one-photon hot band transition to the Sm3+ 4F3/2 highly excited state, and the energy transfer from the ligands to Sm3+ 4F3/2 was observed. The coordination polymers with different Sm3+ concentration exhibit different emission lifetimes of the 530 nm signal since there are two cross relaxation mechanisms in these compounds. In the coordination polymers containing Sm3+ and Tb3+, the energy transfer from Tb3+ to Sm3+ 4F3/2 was found. In addition, in comparison with the coordination polymers containing Y3+, we discover a portion of the Sm3+ 4F3/2 state energy could transfer to the non-adjacent Sm3+ via Tb3+. | en_US |
| DC.subject | 藍位移訊號 | zh_TW |
| DC.subject | 藍位移光譜 | zh_TW |
| DC.subject | 含三價釤配位聚合物 | zh_TW |
| DC.subject | 能量轉移 | zh_TW |
| DC.subject | Blue-shift signal | en_US |
| DC.subject | Blue-shift emission | en_US |
| DC.subject | Coordination polymers containing trivalent samarium | en_US |
| DC.subject | Energy transfer | en_US |
| DC.title | 含三價釤配位聚合物藍位移訊號及相關能量轉移之研究 | 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 |