臺灣博碩士論文加值系統

本論文以化學合成的方式製備盤狀液晶分子材料，經由1H-NMR鑑定結構無誤後量測其材料特性。
本盤狀液晶分子以Acid-6液晶單體為主，以化學合成方式製備完成後再測試其特性。可展現出其液晶基Acid-6原來的特性，即具備桿狀液晶所欠缺的光吸收能力，利用UV-Vis spectrometer，可從吸收光譜得到其電磁波吸收波段約為400 nm，其位於紫外光與可見光區，使其可吸收太陽光作為光敏化材料，此外，盤狀液晶具有自組裝排列的特性，分子間可排列成六角柱狀的結構，具有較高的載子遷移率。
Acid-6應用於染料敏化太陽能電池有不錯之效率，而測量其載子遷移率可使我們得知其所最適應用之元件。

In this thesis we synthesize discotic liquid crystal materials. After demonstrating the molecular structures by 1H-NMR of Acid-6, we measure the properties of this material.
We use discotic liquid crystal Acid-6 and measure its’ properties. It shows the properties of Acid-6 which is having the ability of absorbing visible light. By UV-Vis spectrum, we can realize the absorption band is located at 400 nm and confirm that it is able to be a photo-sensitized dye. Besides, the property of discotic liquid crystal is the self-assembly ability, the molecular can assemble into hexagonal columnar structure by themselves, which enable discotic liquid crystal to have better mobility.
The DSSCs have good power conversion efficiency with using discotic liquid crystals Acid-6. We can measure its’ mobility to know the component with which the most appropriate.

目錄
誌謝 ………………………………………………………………….….I
摘要 …………………………………………………………….………II
Abstract ……………………………………………………………...….III
目錄 ……………………………………………………………..……..IV
圖目錄 ………………………………………………………..………...V
表目錄 …………………………………………………………………VI
Scheme 目錄 ………………………………………………………....VII
第一章 緒論 ………………………….…………...……………………1
1.1 前言 …………………………………………………………...1
1.2 研究動機與目的 ……………………………………………...2
第二章 理論基礎與文獻回顧 …………………………………………4
2.1 盤狀液晶 ……………………………………………………...4
第三章 實驗儀器及其原理 ……………………………………………7
3.1 高磁場液態核磁共振儀 ……………………………………...7
3.1.1 儀器簡介 ……………………………………………....7
3.1.2 儀器原理 ……………………………………………....8
3.2 偏光顯微鏡 …………………………………………………...9
3.2.1 儀器簡介 …………………………………..………......9
3.3熱重分析儀 …………………………………………………..11
3.3.1 儀器簡介 …………………………………………......11
3.3.2 儀器原理 ……………………………………………..12
3.4熱示差掃描卡量計 …………………………………………..13
3.4.1 儀器簡介 ………………………………………...…...13
3.4.2 儀器原理 ……………………………………………..14
3.5 紫外與可見光光譜儀 ……………………………...………..15
3.5.1 儀器簡介 ……………………………………………..15
3.5.2 儀器原理 ……………………………………………..16
3.6 粉末 X-ray 繞射儀 …………………………………………17
3.6.1 儀器簡介 ……………………………………………..17
3.6.2 儀器原理 ……………………………………………..18
3.7飛行時間式電荷傳輸特性量測系統 ………………………..19
3.7.1 儀器原理 ……………………………………………..19
第四章 實驗 …………………………………………………………..21
4.1 盤狀液晶之合成 …………………………………………….21
4.1.1 藥品 ………………………………………….……….21
4.1.2 合成步驟與鑑定 ……………………………………..23
4.2 TOF量測 ………………………………………………….….38
第五章 量測結果與分析 ……………………………………………..41
5.1 光學分析 …………………………………………………….41
5.1.1 紫外與可見光光譜 …………….…………………….41
5.2 熱分析 ……………………………………………………….42
5.2.1 TGA熱分析 …………………………………………..42
5.2.2 DSC熱分析 ……………………….…………………..43
5.3 液晶相之鑑定與觀察 ……………………………………….44
5.3 載子遷移率 ………………………………………………….46
5.3.1在298 K下Acid-6之mobility ………………………46
5.3.2在333 K下Acid-6之mobility ………………………47
5.3.3在383 K下Acid-6之mobility ………………………48
5.3.4在423 K下Acid-6之mobility ……………………....49
第六章 結論與未來工作 ……………………………………………..50
參考資料 ………………………………………………………………51

[1] C. W. Tang, “Two-layer organic photovoltaic cell”,Appl. Phys. Lett.
48 (1986), pp. 183-185
[2] Kouske Hirota, Keisuke Tajima, Kazuhito Hashimoto, Physicochemical study of discotic liquid crystal decacyclene derivative and utilization in polymer photovoltaic devices, 157, 6-7, 2007, 290-296
[3] M. Granstro‥m, K. Petritsch, A. C. Arias, A. Lux, M. R. Andersson,
and R.H. Friend, Nature (London) 395, 257(1998).
[4] C. W. Tang and S. A. Van Slyke, Appl. Phys. Lett. 51, 913 (1987).
[5] Kim, E. H.; Moon, I. K.; Kim, H. K.; Lee, M. H.; Han, S. G.; Yi, M.
H.; Choi,K.-Y., Polymer 1999, 40, 6157.
[6] D. M. Chapin, C. S. Fuller, G. L. Pearson, “A New Silicon p-n
Junction Photocell for Converting Solar Radiation into Electrical
Power”, J. Appl. Phys.25, 676, 1954
[7] Richard J Bushby, Owen R Lozman, Discotic Liquid Crystals 25
years on, Current Opinion in Colloid & Interface Science Volume 7,
Issues 5-6, November 2002, Pages 343-354
[8] Chandrasek, S.Sadashiva, B.K. , Suresh, K.A.Pramana, 9,471,1977
[9] 賴耿陽編著；液晶製法與應用，1997，復漢出版社。
[10] Boden, N.; Bushby, R., J.; Clements, J.; Movaghar, B. J. Mater.
Chem.1999, 9, 2081-2086.
[11] Q. Zheng, G. Fang, W. Bai, N. Sun, P. Qin, X. Fan, F. Cheng, L. Yuan, X. Zhao, Efficiency Iimprovement in Organic Solar Cells by Iinserting a Discotic Liquid Crystal, Sol. Energy Mater. Sol. Cells 95 (2011) 2200-2205
[12] 張建中，孫存普 《磁共振教程》 中國科學技術大學出版社 1996
[13] G. Hersberg, “Molecular Spectra and Molecular Structure III
Electronic Spectra and Electronic Structure of Polyatomic
Molecules, van Nostrand Reihold Company Inc., New York, 1966
[14] G. Hersberg,“Molecular Spectra and Molecular Structure III.
Electronic Spectra and Electronic Structure of Polyatomic
Molecules,van Nostrand Reihold Company Inc., New York, 1966
[15] Jena.A.K.；Rath.Nigam P.Sahoo,Bhagirathi；Sahoo.B.Indian.J.Chem. Sect.A.EN:22,5,1983,371-375.
[16] Ji-Hwan Lee, Hyo-Sik Kim, Brian D. Pate, Sung-Min Choi, Magnetic alignment of discotic liquid crystals on substrates, Physica B 385-386 (2006) 798-800
[17] Mitsuo Hara, Shusaku Nagano, Takahiro Seki, π-π Interaction-Induced Vertical Alignment of Silica Mesochannels Templated by a Discotic Lyotropic Liquid Crystal, J. AM. CHEM. SOC. 2010, 132, 13654-13656
[18] A. Rybak, J. Pfleger, J. Jung, M. Pavlik, I. Glowacki, J. Ulanski, Z. Tomovic, K. Mullen, Y. Geerts, Charge carrier transport in layers of discotic liquid crystals as studied by transient photocurrents, 156, 2-4, 2006, 302-309