以光譜學方法研究含鋱配位聚合物之淬熄機制｜國立中央大學博碩士論文系統

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研究生：	陳冠輝 Guan-Hui Chen
論文名稱：	以光譜學方法研究含鋱配位聚合物之淬熄機制
指導教授：	張伯琛 Bor-Chen Chang
口試委員:
學位類別：	碩士 Master
系所名稱：	理學院 - 化學學系 Department of Chemistry
論文出版年：	2018
畢業學年度：	106
語文別：	中文
論文頁數：	73
中文關鍵詞：	光譜學方法、鋱、淬熄機制
外文關鍵詞：	spectroscopic study, terbium, quenching mechanisms
相關次數：	點閱：12 下載：0
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本論文利用中溫水熱法合成以1,4-cyclohexanedicarboxylate (C8H10O4, CHDC)作為配位基，含有不同莫耳比例釔鋱之R2(CHDC)3配位聚合物晶體(R= Y, Tb)。合成後的晶體以粉末X光繞射(powder X-ray diffraction, PXRD)確認晶體的晶相與純度。本論文量測了一系列不同比例鋱之配位聚合物的光致放光光譜(photoluminescence spectra)、時間解析光譜(time-resolved spectra)以及激發光譜(excitation spectra)，利用上述這些光譜技術來分析YxTb2-x(CHDC)3與Tb2(CHDC)3樣品，發現這些樣品當中並不存在濃度淬熄效應(concentration quenching)；同時量測與Tb3+有關的物質之光致放光光譜與時間解析光譜，進而推測造成YxTb2-x(CHDC)3與Tb2(CHDC)3樣品差異性的可能來源。此外，也探討YxTb2-x(CHDC)3樣品在不同激發波長下有不同Tb3+放光衰退行為的可能原因。

Mid-temperature hydrothermal method was adopted to synthesize the coordination polymers with 1,4-cyclohexanedicarboxylate (C8H10O4, CHDC) ligands and different compositions of Y3+ and Tb3+ as the coordination center. These compounds were analyzed by powder X-ray diffraction to confirm their structure and purity. The photoluminescence, excitation, and time-resolved spectra of these compounds such Tb2(CHDC)3 and YxTb2-x(CHDC)3 were recorded and the emission decay curves of Tb3+ in these compounds were analyzed. The results show no concentration quenching phenomenon in these compounds, but there exist profound differences between Tb2(CHDC)3 and YxTb2-x(CHDC)3. Furthermore, different excitation wavelengths also exhibit different emission decay rates. Possible factors for explaining these differences were investigated.

目錄

中文摘要    I
英文摘要    II
謝誌    III
目錄    IV
圖目錄    VII
表目錄    X
第一章    緒論    1
1-1 鋱：稀土元素    1
1-1-1 鋱    1
1-1-2 鋱離子的能階    2
1-1-3 鋱離子的發光原理    3
1-1-4 鋱離子的應用    4
1-2 文獻回顧    5
1-3 研究目標    9
第二章    實驗    10
2-1 實驗目標    10
2-2 合成方法    10
2-2-1 中溫水熱合成法    11
2-2-2 藥品使用    12
2-2-3    R2(CHDC)3晶體合成    12
2-3 產物之鑑定方法    13
2-4 光譜技術簡介    14
2-4-1 吸收光譜(Absorption Spectra)    15
2-4-2 放射光譜(Emission Spectra)    15
2-5 光譜量測元件介紹    16
2-5-1 光源    16
2-5-2 單光儀(Monochromator)    17
2-5-3 偵測器(Photon Detector)    18
2-5-4 示波器(Oscilloscope)    20
2-6 光譜分析技術及其儀器裝置    20
2-6-1 光致放光光譜(Photoluminescence Spectra)    20
2-6-2 時間解析光譜(Time-resolved Spectra)    22
2-6-3 激發光譜(Excitation Spectra)    24
第三章    結果與討論    27
3-1     R2(CHDC)3    27
3-2 晶體結構    27
3-3 晶體鑑定    29
3-4 激發光譜    31
3-5     484 nm雷射激發之放光光譜    33
3-6   484 nm雷射激發之Tb3+放光衰退曲線    35
3-7     355 nm雷射激發之Tb3+放光衰退曲線    38
3-8     307 nm雷射激發之Tb3+放光衰退曲線    39
3-9 前半段Tb3+放光衰退曲線    40
3-10 線性分析後半段Tb3+放光衰退曲線    42
3-11 不同雷射激發波長下之Tb3+放光衰退行為    45
3-12    Tb2(CHDC)3與YxTb2-x(CHDC)3的差異性    47
3-13 不同樣品之Tb3+放光衰退曲線比較    51
3-14    YxTb2-x(CHDC)3在不同激發波長之行為探討    52
第四章    結論    54
參考文獻    56


                                

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