含三價稀土元素配位聚合物內能量轉移之研究

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题名:	含三價稀土元素配位聚合物內能量轉移之研究
作者:	李穗美;Lee,Sui-mei
贡献者:	化學學系
关键词:	稀土元素;能量轉移
日期:	2015-07-28
上传时间:	2015-09-23 10:50:02 (UTC+8)
出版者:	國立中央大學
摘要:	本論文利用中溫水熱法合成以1,4-cyclohexanedicarboxylate (C8H10O4, 簡稱CHDC)作為配位基含有不同莫耳比例稀土元素之R2(CHDC)3配位聚合物晶體(R= Y, Eu, Tb, Sm)。這些化合物皆以單晶及粉末X光繞射圖譜確認晶體之結構與純度，並以感應耦合電漿原子發射光譜分析儀(ICP-AES)鑑定配位中心的元素比例。YxEuyTb2-x-y(CHDC)3化合物之光致放光光譜、激發光譜及其時間解析光譜在實驗中取得後，我們提出了一個動力學模型成功地解釋在YxEuyTb2-x-y(CHDC)3化合物中之能量轉移現象並求出相關速率常數。此外，以性質相近之Sm3+取代Eu3+合成一系列之YxSmyTb2-x-y(CHDC)3化合物並測量這些化合物的光譜資料，並套用於我們所提出的動力學模型來分析，我們證明此動力學模型能完整詮釋CHDC配位聚合物中之能量轉移現象。;Mid-temperature hydrothermal technique has been adopted for the synthesis of a series of coordination polymers, R2(C8H10O4)3, (R= Y, Eu, Tb, and Sm; C8H10O4= 1,4-cyclohexanedicarboxylate, CHDC) with different compositions. Single-crystal and powder X-ray diffraction (XRD) data of these compounds were obtained for confirming their structure and purity. The photoluminescence spectra, excitation spectra, and time-resolved spectra of YxEuyTb2-x-y(CHDC)3 compounds were recorded. We proposed a kinetics model which successfully explains the energy transfer processes between luminescent centers and related rate constants. Additionally, when Eu3+ is replaced by Sm3+, a series of YxSmyTb2-x-y(CHDC)3 compounds were synthesized. Their related spectroscopic data were also acquired and analyzed by our model. We have shown that the proposed kinetics model can successfully describe the energy transfer processes in the CHDC coordination polymers.
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