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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/71315

    Title: 含三價銪鋱離子配位聚合物內能量轉移之動力學研究
    Authors: 林予晴;Lin,Yu-Qing
    Contributors: 化學學系
    Keywords: 稀土元素;銪鋱離子能量轉移;放光光譜;時間解析光譜
    Date: 2016-07-25
    Issue Date: 2016-10-13 12:43:08 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本論文使用中溫水熱法合成R2(C8H10O4)3配位聚合物,其中R= Y, Eu, Tb,分別以不同莫耳比例組成配位中心,而配位基C8H10O4為1, 4-cyclohexanedicarboxylate (CHDC)。合成之晶體以單晶及粉末X光繞射鑑定其結構及純度,而配位中心的元素比例則以感應耦合電漿原子發射光譜分析儀(ICP-AES)進行確認。本論文主要針對EuxTb2-x(CHDC)3化合物進行探討,測量了一系列樣品之光致放光光譜、激發光譜及時間解析光譜。進行分析後再次確認Eu3+與Tb3+之間能量傳導會與相鄰機率有關,且發現敏化配位基CHDC會影響到Eu3+與Tb3+之間能量傳導效能。本論文對Eu3+訊號上升時間及Tb3+放光衰退時間進行動力學模型的分析,發現Eu3+與Tb3+之間是個三維能量傳導的模式,並由分析數據得到能量轉移速率常數與相關物理參數,其結果成功地解釋Tb3+→Eu3+之能量轉移效能。;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.
    Appears in Collections:[化學研究所] 博碩士論文

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