以硼氫化鈉活化備製錳摻雜硒化鎘團簇物及鑑定 Synthesis and Characterizations of Mn-doped (CdSe)13 Activated by NaBH4

dc.contributor 劉沂欣 zh_TW
dc.contributor Liu, Yi-Hsin en_US
dc.contributor.author 黃國綸 zh_TW
dc.contributor.author Huang, Guo-Lun en_US
dc.date.accessioned 2022-06-08T02:42:16Z
dc.date.available 2021-10-19
dc.date.available 2022-06-08T02:42:16Z
dc.date.issued 2021
dc.description.abstract 本研究第一部份利用過去魔術尺寸硒化鎘奈米團簇物之合成方式,並以元素硒粉末代替價格昂貴的硒脲作為合成之前驅物在室溫下進行合成,透過紫外光-可見光譜儀、X光粉末繞射儀、元素分析以及固態核磁共振光譜儀,證實其同樣為雙生團簇物之結構。後續引入具有未成對電子的過度金屬錳離子,作為光學與磁性之改質,藉由穿透式電子顯微鏡、X光粉末繞射、可見光光譜儀、螢光光譜儀、X光吸收光譜延伸精細結構、電子順磁共振光譜儀、超導量子干涉儀以及磁圓偏振二色性光譜,確認形貌、晶體與電子結構、化學配位環境、未成對電子的存在,並探討錳摻雜之奈米團簇物之磁性性質與磁光性質的改變。我們在錳摻雜之奈米團簇物觀察到了反鐵磁性,在第二部分以高表面積之中孔洞沸石奈米粒子 (mesoporous zeolite nanoparticles, MZNs) 做為硬模板,在吸附[(CdSe)13]2限制奈米團簇物生長的同時,也試著分散具有磁性錳離子,藉由孔洞材料高介電的性質,改善錳-錳之間自旋的耦合作用。此外,中孔氧化石墨烯奈米粒子 (mesoporous graphene-oxide nanoparticles, MGNs) 做為模板時可增進導電性,未來欲結合中孔洞薄膜材料的生長,進行鑑定探討及討探索於稀磁性半導體之應用可能性。 zh_TW
dc.description.abstract In this study, we use selenium powder instead of expensive selenourea as the precursor to synthesize (CdSe)13 nanoclusters at room temperature. Ultraviolet-visible absorption spectroscopy (UV-vis), elemental analysis (EA) and solid-state nuclear magnetic resonance spectroscopy (ssNMR) confirmed that it is also the twin clusters. Magnesium ions were introduced to dope the clusters, showing unique phosphorescence, magneto optical and magnetic properties. The characterizations of compositions, electronic and spin structure were assured by UV-vis, X-ray powder diffraction (XRD), infrared spectroscopy (IR), extended X-ray absorption fine structure (EXAFS), electron paramagnetic resonance, magnetic circular dichroism spectrophotometer (MCD) and superconducting quantum interference device magnetometer (SQUID).We have observed anti-ferromagnetism in Mn-doped (CdSe)13. In the second part, mesoporous zeolite nanoparticles (MZNs) with high surface area were used as hard templates to adsorb (CdSe)13, while limiting the growth of clusters, we also try to disperse magnetic manganese ions. In addition, Mn-doped (CdSe)13@MZNs can be created when mesoporous graphene-oxide nanoparticles (MGNs) were introduced. Charge separation can be observed by fluorescence quenching. Mn-doped (CdSe)13 combined with MGN show great candidate for catalytic applications. en_US
dc.description.sponsorship 化學系 zh_TW
dc.identifier 60842080S-40366
dc.identifier.uri https://etds.lib.ntnu.edu.tw/thesis/detail/98e17f9db8dd2e78c2aa7349671ce47a/
dc.identifier.uri http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/117261
dc.language 中文
dc.subject 零維結構 zh_TW
dc.subject 硒化鎘 zh_TW
dc.subject 稀磁性半導體 zh_TW
dc.subject 模板法 zh_TW
dc.subject 中孔洞沸石材料 zh_TW
dc.subject 魔術尺寸團簇物 zh_TW
dc.subject zero-dimension en_US
dc.subject cadmium selenide en_US
dc.subject diluted magnetic semiconductors en_US
dc.subject template en_US
dc.subject mesoporous zeolite nanoparticles en_US
dc.subject magic-size clusters en_US
dc.title 以硼氫化鈉活化備製錳摻雜硒化鎘團簇物及鑑定 zh_TW
dc.title Synthesis and Characterizations of Mn-doped (CdSe)13 Activated by NaBH4 en_US
dc.type 學術論文
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