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One-step synthesis of ordered mesostructural organic/silica nanocomposites with tunable fluorescence surfactants
No full text
Synthesis of fluorescent surfactants and their applications in porous materials
No full text此論文的研究方向包含了三個部分。第一部分利用一連串的有機合成，得到了發光基團相同但疏水端長度不同的螢光型界面活性劑，並將之應用在中孔洞材料的製備上。發現可以進一步控制得到的複合材料之孔徑(晶格)大小，另外透過水熱與否也會對於材料的整體性質有所影響；而且由於規則的孔道提供的限制空間，我們可以搭配各種孔洞相關數據，進一步探討處於限制下的螢光行為。
第二部分的螢光型界面活性劑之發光基團與疏水端長度都不相同，同樣應用在中孔複合材料的合成，在螢光及孔洞性質上加以研究。上述的兩個部分除了成功的製備成粉末形式的樣品外，我們也利用旋轉塗佈方式將複合材料製備成薄膜。
第三部分利用了上述的螢光型界面活性劑，嘗試著利用一步驟且相對低溫的合成條件，可以直接得到具有晶相以及孔洞特性的有機無機複合材料；另外也希望藉著螢光界面活性劑的共軛系統，可以將複合材料的吸收光譜延長至可見光的範圍。Mesostructured nanocomposite with complete pore-filling of fluorescent molucules is an interesting subject since such hybrid materials would provide greater control over the molecular alignment and stability. In this thesis, we tried to prepare such nanocomposites using fluorescent surfactants as templates. In the first part, fluorescent surfactants with different hydrophobic chain length were successfully synthesized by multiple coupling reactions. After Sol-Gel process, mesostructured nanocomposites with optoelectronic properties were obtained in either powder form or as thin films by one-step synthesis. Photoluminescence (PL) behavior and physical properties of the resulting materials were fully characterized by several techniques.
In the second part, fluorescent surfactants with different conjugated system were synthesized and then used as templates to prepare functional nanocomposites. The resulting nanocomposites could have both the ordered mesostructure and the PL property without further treatments. In short, we successfully prepared mesostructured nanocomposites with optoelectronic property by one-step synthesis in both parts.
In the third part, we tried to develop a method which could prepare nanocrystalline organics/TiO2 porous composites in one step. The physical properties of the composites were characterized by the N2 adsorption-desorption isotherm, XRD, UV-Vis, PL, TGA, TEM, and SEM.謝誌..............................Ⅰ
摘要..............................Ⅱ
摘要(英文)........................Ⅲ
目錄..............................Ⅳ
圖目錄............................Ⅷ
表目錄............................ⅩⅢ
第一章 緒論
1-1 中孔洞材料簡介.............................1
1-2 界面活性劑性質.............................4
1-2.1 界面活性劑結構及分類........................4
1-2.2 微胞概念....................................6
1-3 中孔洞材料應用..................................7
1-3.1 非均相催化反應..............................7
1-3.2 藥物傳遞釋放................................7
1-3.3 生物標定....................................8
1-4 有機無機複合材料................................8
1-4.1 共縮合(co-condensation)法...................9
1-4.2 後修飾法....................................11
1-4.2 共縮合 / 聚合反應...........................12
1-5 金屬氧化物的中孔材料............................13
1-6 本論文研究方向..................................16
第二章 不同疏水端長度的螢光型界面活性劑應用在孔洞材料上的性
質探討
2-1 簡介............................................17
2-1.1 實驗架構....................................17
2-2 界面活性劑合成..................................18
2-3 中孔洞粉末材料的合成、鑑定及其性質探討..........21
2-3.1 中孔洞粉末的合成............................21
2-3.2 中孔洞粉末的鑑定............................21
2-3.3 中孔洞粉末的性質探討........................22
2-4 中孔洞薄膜的製備、鑑定及其性質探討..............36
2-4.1 中孔洞薄膜的製備............................36
2-4.2 中孔洞薄膜的鑑定............................36
2-4.3 中孔洞薄膜的性質探討........................37
2-5 共混合界面活性劑的中孔洞薄膜之光學性質..........46
2-5.1 目的........................................46
2-5.2 實驗材料及方法簡述..........................46
2-5.3 共混合界面活性劑的中孔洞薄膜之鑑定..........48
2-6 簡結............................................52
第三章 含不同共軛長度發光團的螢光型界面活性劑應用在孔洞材料
上的性質探討
3-1 實驗架構........................................54
3-2 界面活性劑合成..................................55
3-3 中孔洞粉末材料的合成、鑑定及其性質探討..........59
3-3.1 中孔洞粉末材料的合成與鑑定..................59
3-3.2中孔洞材料的性質探討.........................59
3-4 中孔洞薄膜的製備、鑑定及其性質探討..............73
3-4.1 中孔洞薄膜的製備............................73
3-4.2 中孔洞薄膜的性質探討........................73
3-5 簡結............................................79
第四章 合成具有結晶性之二氧化鈦孔洞材料
4-1 簡介及實驗架構..................................81
4-2 孔洞性二氧化鈦粉末的合成、鑑定及其性質探討......81
4-2.1 孔洞性二氧化鈦粉末的合成....................81
4-2.2 孔洞性二氧化鈦粉末的鑑定....................82
4-2.3 孔洞性二氧化鈦粉末的性質探討................83
4-3 簡結............................................94
第五章 結論.........................................95
第六章 實驗部分
6-1 儀器............................................98
6-2 溶劑純化........................................102
6-3 實驗過程........................................102
6-4 實驗步驟 (有機合成)
第二章............................................103
第三章............................................115
6-5 實驗步驟 （中孔洞材料)
6-5.1 中孔粉末合成................................123
6-5.2 中孔薄膜製備................................123
6-5.3 共混合界面活性劑的中孔薄膜製備..............124
6-5.4 孔洞性二氧化鈦粉末的合成....................124
6-5.5 萃取步驟....................................125
參考文獻............................................12
Lowest electronic states of neutral and ionic LiN
No full textWe have investigated the potential energy curves (PECs) of the LiN heteronuclear diatomic molecule, including its ionic species LiN+ and LiN−, using explicitly correlated multi-reference configuration interaction (MRCI-F12) calculations in conjunction with the correlation consistent quintuple- basis set. The effect of core–valence correlation, scalar relativistic effects, and the size of the basis sets has been investigated. A comprehensive set of spectroscopic constants determined based on the above-mentioned calculations are also reported for the lowest electronic states and all systems, including dissociation energies, harmonic and anharmonic vibrational frequencies, and rotational constants. Additional parameters, such as the dipole moments, equilibrium spin-orbit constants, excitation energies, and rovibrational energy levels, are also documented. We found that the three triplet states of LiN, namely, X 3∑−, A 3Π, and 2 3∑−, exhibit substantial potential wells in the PEC diagrams, while the quintet states are repulsive in nature. The ground state of the anion also shows a deep potential well in the vicinity of its equilibrium geometry. In contrast, the ground and excited states of the cation are very loosely bound. Charge transfer properties of each of these states are also analyzed to obtain an in-depth understanding of the interatomic interactions. We found that the core–valence correlation has a substantial effect on the calculated spectroscopic constants.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Atmospheric Remote Sensin
Dr. Lin Sun, CAU, March 2013
No full textThis video is a conversation with Dr. Lin Sun. Dr. Sun talks about an exhibit at the Woodruff Library titled "At The Boundary." Jordan Moore, AUC Woodruff Library, is the interviewer
Using an ammonia treatment to improve the floating-gate spacing in split-gate flash memory
No full textAn Analysis of <i>Judge Lin</i>
No full textBiography of Lin Wen Zhong Gong has another way to call, that is Judge Lin. The leading character is Lin Ze-Xu. This book is based on functionary experience of Lin Ze-Xu, with the captivating plots of court case, helping by highly skilled military attach\uc3\ua9s and chivalrous knights, and the history facts of Opium War. It makes Lin Ze-Xu\ue2s Confucian temperament and tragic mood more, also contrasts with author\ue2s sorrow and furiousness for the politics at the time. History, court case, martial arts\ue2\ua6\ue2\ua6etc. are essence of this book and it broadens the way of this writing style.
The topic of the thesis is \ue2An Analysis of Judge Lin\ue2. The following thesis will be divided into six different chapters. The introduction is Chapter one of the thesis, which is including researching motive and purpose, literature review of predecessors, researching version by existing information, raising questions, choosing research methods and arranging chapters. In chapter Two, I discuss the study of characters of Lin Ze-Xu, also makes a deep analysis of author\u27s purpose of writing him. In chapter Three, I analyze supporting actors and actress. Meanwhile, I illustrate author\u27s purpose of writing supporting actress because the author had different manner to describe supporting actress. Moving to the Chapter Four, I mainly focus on the plots of Judge Lin, and organize cases of Lin Ze-Xu and his subordinates to understand features of cases. In Chapter Five, I represent the causes of Opium War. China and England had difference of opinions of opium. Therefore, it is easier to comprehend what the author\u27s purpose is. In the last chapter I summarize the main points of the preceding chapters and confirm particularity of Judge Lin
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