以硼氫化鈉活化備製錳摻雜硒化鎘團簇物及鑑定

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dc.contributor劉沂欣zh_TW
dc.contributorLiu, Yi-Hsinen_US
dc.contributor.author黃國綸zh_TW
dc.contributor.authorHuang, Guo-Lunen_US
dc.date.accessioned2022-06-08T02:42:16Z
dc.date.available2021-10-19
dc.date.available2022-06-08T02:42:16Z
dc.date.issued2021
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.abstractIn 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.identifier60842080S-40366
dc.identifier.urihttps://etds.lib.ntnu.edu.tw/thesis/detail/98e17f9db8dd2e78c2aa7349671ce47a/
dc.identifier.urihttp://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.subjectzero-dimensionen_US
dc.subjectcadmium selenideen_US
dc.subjectdiluted magnetic semiconductorsen_US
dc.subjecttemplateen_US
dc.subjectmesoporous zeolite nanoparticlesen_US
dc.subjectmagic-size clustersen_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.titleSynthesis and Characterizations of Mn-doped (CdSe)13 Activated by NaBH4en_US
dc.type學術論文

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