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Student Number 89223007
Author Yen-Ting Kuo(郭彥廷)
Author's Email Address s9223007@cc.ncu.edu.tw
Statistics This thesis had been viewed 2414 times. Download 2064 times.
Department Chemistry
Year 2001
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title The synthsis and property research of conducting polymer and titanium dioxide nanocomposite
Date of Defense 2002-07-11
Page Count 163
Keyword
  • composite
  • Abstract Titanium dioxide used to be a good paint and photocatalyst. However the absorption threshold of TiO2 falls in ultraviolet region (about 340nm). In this study we use static attraction between negatively charged. P3SH(poly(2-(3-thienyloxy)ethanesulfonate)) or PSA(poly (N-(4-sulfophenyl)aniline)) and positively charged titanium dioxide to form composites. The band gap energy of TiO2 maybe reduced by the interactions between two semi-conductive materials. Different stoichiometry amount of conducting polymer and titanium dioxide were blended together and the resulting composites were analyzed with various spectroscopic methods. TEM SEM and DFM revealed that titanium dioxide will insert into the aggregation of P3SH. On the other hand titanium dioxide particles penetrate the bundle of PSA chains and at the same time destroy the regular arrangement of PSA polymer chains. IR and ESCA spectra showed that the absorption of S=O bond on P3SH move to higher wavenumber and the binding of S shift to higher value. UV/Vis/NIR results proved that the absorption threshold of TiO2 has shifted to higher wavelength by forming the composite with P3SH. Furthermore, the domain size of TiO2 was reduced by forming composite with conjugated polymers.
    Table of Content             目錄
    中文摘要--------------------------------------------------------------------------Ⅰ
    英文摘要--------------------------------------------------------------------------Ⅱ
    目錄--------------------------------------------------------------------------------Ⅲ
    圖目錄-----------------------------------------------------------------------------Ⅶ
    表目錄-----------------------------------------------------------------------------Ⅹ
    壹.緒論------------------------------------------------------------------------------1
    1-1導電高分子簡介--------------------------------------------------------------1
    1-2導電高分子的應用-----------------------------------------------------------2
    1-3有機無機複合材料-----------------------------------------------------------4
    1-4 Core-Shell structure--------------------------------------------------------6
    1-5二氧化鈦(Core)的性質------------------------------------------------------7
    1-6 Shell的簡介-------------------------------------------------------------------8
    1-7研究動機---------------------------------------------------------------------11
    貳.實驗步驟----------------------------------------------------------------------13
    2-1藥品---------------------------------------------------------------------------13
    2-2實驗步驟---------------------------------------------------------------------15
     2-2-1 TiO2溶膠溶液的合成-------------------------------------------------15
     2-2-2 Poly(N-(4-sulfophenyl)aniline) (PSA)的合成---------------------15
    2-2-3 Poly(aniline-co-N-(4-sulfophenyl)aniline)Copolymers,(PAPSA)
    的合成-------------------------------------------------------------------16
    2-2-4水溶性聚?吩的合成-------------------------------------------------17
       2-2-4-1 3-methoxythiophene的合成-----------------------------------17
       2-2-4-2 3-(2-bromo)ethoxythiophene的合----------------------------17
       2-2-4-3 Sodium 2-(3-thienyloxy)ethanesulfonate的合成-----------17
    2-2-4-4 Sodium Poly(2-(3-thienyloxy)ethanesulfonate)(P3TOENa)
       的合成------------------------------------------------------------20
       2-2-4-5 Poly(2-(3-thienyloxy)ethanesulfonic acid) (P3SH)
    的合成-----------------------------------------------------------20
      2-2-5 Core-Shell的合成--------------------------------------------------21
      2-2-6光催化反應活性測試----------------------------------------------22
     2-3 使用儀器及樣品的製備------------------------------------------------22
      2-3-1紅外光吸收光譜儀-------------------------------------------------22
      2-3-2紫外光/可見光/近紅外光光譜-----------------------------------23
      2-3-3 X-光繞射----------------------------------------------------------24
      2-3-4熱重分析-------------------------------------------------------------25
      2-3-5掃瞄式電子顯微鏡-------------------------------------------------25
      2-3-6化學分析電子分光儀----------------------------------------------26
      2-3-7動態光散射雷射粒徑測試----------------------------------------26
      2-3-8穿透式電子顯微鏡-------------------------------------------------28
      2-3-9小角度X光散射----------------------------------------------------29
      2-3-10螢光光譜------------------------------------------------------------30
      2-3-11輕敲式原子力顯微鏡---------------------------------------------30
    參.結果與討論-------------------------------------------------------------------32
     3-1-1 TiO2粒子的合成-------------------------------------------------------32
     3-1-2 TiO2的結構分析-------------------------------------------------------34
      3-1-2.1 TiO2粉末x-ray繞射光譜的測量------------------------------35
      3-1-2.2 TiO2的IR測量----------------------------------------------------35
      3-1-2.3 TiO2的TEM測量-------------------------------------------------36
      3-1-2.4 TiO2粒子水溶液粒徑的測量-----------------------------------36
      3-1-2.5 TiO2粒子水溶液小角度x-ray散射的測量------------------37
     3-1-3 TiO2的性質分析-------------------------------------------------------37
      3-1-3.1 TiO2的UV/Vis/NIR光譜----------------------------------------37
      3-1-3.2 TiO2的螢光光譜測量--------------------------------------------38
      3-1-3.3 TiO2膜的ESCA測量--------------------------------------------38
      3-1-3.4用SEM來測試TiO2的表面型態-------------------------------39
      3-1-3.5用DFM來測試TiO2的表面型態------------------------------39
      3-1-3.6 TiO2的熱穩定性--------------------------------------------------39
      3-1-3.7 TiO2的價帶結構--------------------------------------------------40
     3-2-1導電高分子的合成----------------------------------------------------40
      3-2-1.1 Poly(N-(4-sulfophenyl)aniline), (PSA)的合成---------------40
      3-2-1.2 Poly(aniline-co-N-(4-sulfophenyl)aniline)Copolymers,
         (PAPSA)的合成---------------------------------------------------41
      3-2-1.3 (poly(2-(3-thienyloxy)ethanesulfonate)), (P3SH)的合成---41
     3-2-2導電高分子的結構分析----------------------------------------------42
      3-2-2.1 Poly(N-(4-sulfophenyl)aniline), (PSA)的結構分析---------42
      3-2-2.2 Poly(aniline-co-N-(4-sulfophenyl)aniline)Copolymers,
    (PAPSA)的結構分析---------------------------------------------43
      3-2-2.3 (poly(2-(3-thienyloxy)ethanesulfonate)),
    (P3SNa)的結構分析---------------------------------------------43
     3-2-3導電高分子的性質分析----------------------------------------------44
      3-2-3.1 Poly(N-(4-sulfophenyl)aniline), (PSA)的性質分析---------44
      3-2-3.2 Poly(aniline-co-N-(4-sulfophenyl)aniline)
    Copolymers,(PAPSA) 的性質分析----------------------------46
      3-2-3.3 (poly(2-(3-thienyloxy)ethanesulfonate )),
    (P3SH)的性質分析----------------------------------------------47
     3-3-1導電高分子與TiO2複合物的合成----------------------------------49
     3-3-2導電高分子與TiO2複合物的結構分析----------------------------49
      3-3-2.1 TiO2-PSA複合物-------------------------------------------------49
      3-3-2.2 TiO2-PAPSA複合物---------------------------------------------52
      3-3-2.3 TiO2-P3SH複合物-----------------------------------------------52
     3-3-3導電高分子與TiO2混合後的性質分析----------------------------55
      3-3-3.1 TiO2-PSA複合物-------------------------------------------------55
      3-3-3.2 TiO2-PAPSA複合物---------------------------------------------60
      3-3-3.3 TiO2-P3SH複合物-----------------------------------------------62
     3-3-4導電高分子與TiO2複合物之光催化性質-------------------------66
    肆.結論----------------------------------------------------------------------------67
    伍.參考文獻---------------------------------------------------------------------145
    圖目錄
    圖1-1:TiO2光催化的反應機制圖--------------------------------------------67
    圖1-2:已知水溶性聚苯胺之結構--------------------------------------------10
    圖2-1:TiO2的合成說明圖-----------------------------------------------------15
    圖2-2:PSA的合成示意圖-----------------------------------------------------16
    圖2-3:PAPSA的合成示意圖--------------------------------------------------17
    圖2-4:3-methoxythiophene的合成示意圖----------------------------------18
    圖2-5:3-(2-bromo)ethoxythiophene的合成示意圖------------------------19
    圖2-6:Sodium 2-(3-thienyloxy)ethanesulfonate的合成示意圖----------19
    圖2-7:Sodium Poly(2-(3-thienyloxy)ethanesulfonate)的合成示意圖---20
    圖2-8:Poly(2-(3-thienyloxy)ethanesulfonic acid)的合成示意圖---------21
    圖2-9:動態光散射示意圖-----------------------------------------------------27
    圖3-9:光催化反應示意圖-----------------------------------------------------22
    圖3-1:TiO2的粉末XRD繞射圖(a)常溫下合成         
    (b)經加熱迴流處理---------------------------------------------------68
    圖3-2:TiO2鍍在矽晶片上的IR吸收圖-------------------------------------69
    圖3-3:TiO2的TEM圖----------------------------------------------------------70
    圖3-4:TiO2溶液的粒徑分佈圖(插圖:實驗數據與計算的符合圖)-----71
    圖3-5:TiO2溶液的X-Ray小角度散射圖-----------------------------------72
    圖3-6.1:以(a)鹽酸 (b)硝酸 當作酸觸媒所合成之TiO2溶液的
    UV/Vis/NIR圖------------------------------------------------------73
    圖3-7:(a)TiO2溶液的UV/Vis/NIR圖 (b)(a)的微分後的圖--------------74
    圖3-8:TiO2膜的UV/Vis/NIR光譜圖----------------------------------------75圖3-9:TiO2膜之螢光光譜圖 (以250 nm當作激發光源)---------------76
    圖3-10:TiO2膜(鍍於矽晶片上)的ESCA圖-------------------------------77
    圖3-11:TiO2的SEM圖(a)(b)低溫合成 (c)(d)迴流加熱------------------78
    圖3-12:TiO2膜的DFM圖-----------------------------------------------------79
    圖3-13:TiO2的之熱重分析(TGA)圖----------------------------------------80
    圖3-14:PSA的粉末XRD繞射圖---------------------------------------------81
    圖3-15:PSA的IR圖(a)低溫下製備 (b)經加熱迴流處理----------------82
    圖3-16:PSA的TEM圖---------------------------------------------------------83
    圖3-17:PSA的粒徑分佈圖(插圖:實驗數據與計算的符合圖)---------84
    圖3-18:PAPSA的IR圖(a)不可溶部分 (b)可溶部分---------------------85
    圖3-19:水溶性?吩的IR圖(a)鹼式(含Na) (b)酸式---------------------86
    圖3-20:P3SH的TEM圖-------------------------------------------------------87
    圖3-21:不同濃度的PSA溶液的螢光光譜圖
    (a)1.7䙚-3M (b)8.7䙚-4M (c)4.3䙚-4M (d)2.2䙚-4M-------88
    圖3-22:經加熱迴流處理過之不同濃度的PSA溶液的螢光光譜圖
    (a)2.2䙚-4M (b)1.1䙚-4M (c)5.4䙚-4M (d)2.7䙚-4M
    (e)1.4䙚-4M----------------------------------------------------------89
    圖3-23:PSA(a)溶液 (b)膜的UV/Vis/NIR圖-------------------------------90
    圖3-23:不同濃度的PSA溶液之UV/Vis/NIR圖(a)7.73䙚-4M
        (b)3.87䙚-4M (c)1.93䙚-4M (d)9.66䙚-5M(e)4.83䙚-5M
        (插圖:PSA在755nm的濃度-吸收度校正曲線)----------------91
    圖3-24:PSA的SEM圖 (a)(b)低溫合成 (c)(d)迴流加熱----------------92
    圖3-25:PSA的DFM圖---------------------------------------------------------93
    圖3-26:PSA之熱重分析(TGA)圖-------------------------------------------94
    圖3-27:PSA的ESCA分析圖-------------------------------------------------95
    圖3-28:不同濃度PAPSA溶液(迴流過)的螢光光譜圖 (a)1.7䙚-3M (b)8.7䙚-3M (c)4.3䙚-4M (d)2.2䙚-4M (e)1.1䙚-4M
    (f)5.5䙚-4M (g)2.8䙚-4M-----------------------------------------96圖3-29:PAPSA(a)膜 (b)溶液的Uv/Vis/NIR圖----------------------------97
    圖3-30:PAPSA分子內自酸摻雜後的結構---------------------------------47圖3-31:PAPSA膜的SEM圖--------------------------------------------------98
    圖3-32:PAPSA之熱重分析(TGA)圖(a)可溶部份分 (b)不可溶部分-99
    圖3-33:不同濃度水溶性聚?吩溶液的螢光光譜圖 (a)4.4䙚-3M
    (b)2.2䙚-3M (c)1.1䙚-3M (d)5.5䙚-4M (e)2.8䙚-4M
    (f)1.4䙚-4M (g)7䙚-5M------------------------------------------100圖3-34:不同濃度水溶性聚?吩的溶液的Uv/Vis/NIR圖(a) 5.5䙚-4M
        (b)2.8䙚-4M (c)1.4䙚-4M (d)7䙚-5M   
        插圖:水溶性聚?吩溶液濃度與吸收度(在393nm)的校正曲線-------------------------------------------------------------------------101圖3-35:P3SH分子內自酸摻雜-----------------------------------------------48
    圖3-36:P3SH的SEM圖(a)低溫合成 (b)(c)迴流加熱------------------102圖3-37:P3SH的DFM圖------------------------------------------------------103圖3-38:P3SH之熱重分析(TGA)圖----------------------------------------104圖3-39:P3SH的ESCA分析圖----------------------------------------------105圖3-40:不同計量的TiO2-PSA複合物的X光粉末繞射圖(a)1TPSA
        (b)5TPSA (c)20TPSA-----------------------------------------------106
    圖3-41:不同計量的TiO2-PSA複合物的IR圖(鍍在矽晶片上) (a)5TPSA (b)10TPSA (c)20TPSA (d)40TPSA (e)80TPSA
    (f)160TPSA----------------------------------------------------------107圖3-42:(a)PSA (b)5TPSA (c)TiO2的IR圖--------------------------------108圖3-43:20TPSA的TEM圖--------------------------------------------------109圖3-44:5TPSA的TEM圖----------------------------------------------------109圖3-45:TiO2與PSA混合示意圖----------------------------------------------52圖3-46:不同計量的TiO2-PAPSA複合物的IR圖(鍍在矽晶片上)
    (a)5TPAPSA (b)10TPAPSA (c)20TPAPSA (d)40TPAPSA
    (e)80TPAPSA (f)160TPAPSA------------------------------------110圖3-47:(a)PAPSA (b)TiO2 (c)5TPAPSA的IR圖--------------------------111
    圖3-48:不同計量的TiO2-P3SH複合物的X光粉末繞射圖(a)20TP3SH
        (b)5TP3SH (c)1TPSA (d)5P3SH(經過迴流處理)---------------112圖3-49:不同計量的TiO2-P3SH複合物的的IR圖(a)5TP3SH
        (b)20TP3SH---------------------------------------------------------113圖3-50:(a)P3SH (b)TiO2-P3SH複合物的 (c)TiO2的IR圖-------------114圖3-51:不同計量TiO2-P3SH複合物之TEM圖--------------------------115
    圖3-52:不同計量的TiO2-PSA複合物膜的螢光放光光譜圖(a)1TPSA
        (b)10TPSA------------------------------------------------------------116圖3-53:不同計量TiO2-PSA複合物溶液的UV/Vis/NIR圖------------117圖3-54:不同計量TiO2-PSA複合物膜的UV/Vis/NIR圖---------------118圖3-55:TiO2, PSA及不同計量TiO2-PSA複合物經加熱迴流處理後之
        溶液部分的UV/Vis/NIR圖----------------------------------------119圖3-56:TiO2, PSA及不同計量TiO2-PSA複合物經加熱迴流處理後之
        溶液部分所做膜的UV/Vis/NIR圖-------------------------------120圖3-57:TiO2, PSA及不同計量TiO2-PSA複合物經加熱迴流處理後之
        固體部分的溶液UV/Vis/NIR圖----------------------------------121圖3-58:TiO2, PSA及不同計量TiO2-PSA複合物經加熱迴流處理後
    之固體部分所做膜的UV/Vis/NIR圖---------------------------122圖3-59:不同計量TiO2-PSA複合物的SEM圖---------------------------123圖3-60:經過迴流處理之TiO2-PSA複合物(5TPSA)的SEM圖------124圖3-61:(a)20TPSA (b)5TPSA的DFM圖----------------------------------125圖3-62:5TPSA之熱重分析( TGA)圖 (a)室溫製備
    (b)經加熱迴流處理------------------------------------------------126圖3-63:TiO2及不同計量TiO2-PSA複合物之Ti2pESCA圖(a)TiO2
        (b)1TPSA (c)5TPSA (d)20TPSA (e)5TPSA ( reflux)---------127圖3-64:PSA及不同計量TiO2-PSA複合物之S2pESCA圖(a)PSA
        (b)1TPSA (c)5TPSA (d)20TPSA (e)5TPSA ( reflux)---------128圖3-65:不同劑量TiO2+PSA之N元素的ESCA圖(a)PSA (b)TiO2+PSA, Ti:PSA=1:1 (c)TiO2+PSA, Ti:PSA=5:1 (d)TiO2+PSA,
    Ti:PSA=5:1 reflux (f)PSA reflux---------------------------------129圖3-66:PAPSA, TiO2及不同計量TiO2-PAPSA複合物溶液的
        UV/Vis/NIR圖------------------------------------------------------130圖3-67:PAPSA, TiO2及不同計量TiO2-PAPSA複合物膜的UV/Vis/NIR
        圖-----------------------------------------------------------------------131圖3-68:不同計量TiO2-PAPSA複合物之SEM圖(5000倍) (a)5TPAPSA (b)10TPAPSA (c)100TPAPSA
    (d)200TPAPSA------------------------------------------------------132圖3-69:5TPAPSA沉澱後溶液部分之ESCA分析圖--------------------133圖3-70:5TPAPSA沉澱後固體部分之ESCA分析圖--------------------134圖3-71:不同計量TiO2-P3SH複合物溶液的UV/Vis/NIR圖-----------135圖3-72:不同計量TiO2-P3SH複合物膜的UV/Vis/NIR圖--------------136圖3-73:不同計量TiO2-P3SH複合物溶液經迴流處理後的UV/Vis/NIR
        圖----------------------------------------------------------------------137圖3-74:不同計量TiO2-P3SH複合物經迴流處理後所製膜的
        UV/Vis/NIR圖---------------------------------------------------138圖3-75:不同計量TiO2-P3SH複合物的SEM圖-------------------------139圖3-76:5TP3SH經迴流處理後的SEM圖---------------------------------140圖3-77:(a)20TP3SH (b)5TP3SH的DFM圖-------------------------------141圖3-78:TiO2與P3SH混合的示意圖-----------------------------------------65圖3-79:5TP3SH之熱重(TGA)分析圖 (a)常溫製備 (b)經加熱迴流
        處理-------------------------------------------------------------------142圖3-80:TiO2及不同計量TiO2-P3SH複合物之Ti元素的ESCA (a)1TP3SH(b)5TP3SH (c)20TP3SH (d)TiO2 (e)5TPSA
     (reflux)---------------------------------------------------------------143圖3-81:P3SH 及不同計量TiO2-P3SH複合物之S元素的ESCA圖 (a)P3SH (b)1TP3SH (c)5TP3SH (d)20TP3SH (e)5TPSA
    (reflux)---------------------------------------------------------------144
    表目錄
    表1-1常見導電高分子的結構--------------------------------------------------3
    表1-2目前已商業化的導電高分子商品和上市資料-----------------------4
    表1-3有機物與無機物特性的比較--------------------------------------------5
    表3-1不同計量TiO2-PSA複合物之粒徑大小-----------------------------51
    表3-2不同計量TiO2-P3SH複合物S=O、S-O鍵之IR吸收表-----------53
    表3-3不同計量TiO2-P3SH複合物之粒徑大小----------------------------54
    表3-4不同計量PSA-TiO2複合物的起始吸收位置-----------------------56
    表3-5不同計量PSA-TiO2複合物經迴流後固相部分的起始吸收位置--------------------------------------------------------------------------------------57
    表3-6不同劑量PAPSA-TiO2複合物的起始吸收位置--------------------60
    表3-7不同計量P3SH-TiO2的起始吸收位置-------------------------------62
    表3-8不同計量迴流過P3SH-TiO2複合物的起始吸收位置-------------63
    表3-9不同計量及不同複合物之光催化活性表---------------------------66
    Reference 1.H. Letherby, J. Chem. Soc., 1862, 15, 16
    2.蕭如娟, 科儀新知, 1988, 9, 6, 65
    3.曾志正, 儲三洋, 科學月刊, 1989, 第二十卷, 第一期, 44
    4.A. F. Diaz, K. K. Kanazawa, G. P. Gardini, Chem. Commum., 1979, 635
    5.A. Ohtani, M. Abe, H. Huguchi, J. Chem. Soc. Chem. Commum., 1988, 1545
    6.J. Caia, R. B. Kaner, A.G. MacDiarmid, J. Electrochrm. Soc., 1984, 131, 2744
    7.M. S. Whittingham, Science, 1976, 192, 1126
    8.T. Kobayashi, H. Yoneyama, H. Tamura, J. Electrochem. Interfacial Electrochem., 1984, 161, 419
    9.A. G. MacDiarmid, S. L. Mu, N. L. D. Somasiri, Mol. Cryst. Liq. Cryst., 1986, 121. 187
    10.Garnier F., Chem. Phys., 1998, 227, 253.
    11.(a) Tessler, N.; Denton, G. J.; Friend, R. H. Nature 1996, 382, 695. (b) Hide, F.; Diaz-Garcia, M. A.; Schwartz, B. J.; Andersson, M. R.;Pei, Q. B.; Heeger, A. J. Science 1996, 273, 1833.
    12.Arie Zaban, Yishay Diamant, J. Phys. Chem. B, 2000, 104, 10043-10046
    13.Zheng L., Urian. R. C., Chem. Mater., (Communication), 2000; 12(1); 13-15.
    14.Joel S. Miller, Adv. Mater., 1993, 5, 671
    15.P. Judeinstenin, C. Sanchez, J. Mater. Chem., 1996, 6(4), 511-525
    16.R. Reisfeld, Ch. K. Jorgenson, In Chem. Spec. Appl. Of Sol-gel Glasses, 1991, P207
    17.R. Reisfeld, D. Brusilovsky, Chem. Phys. Lett., 1989, 160, 43
    18.A. F. Diaz, K. K. Kanazawa, J. Chem. Soc. Chem. Commum., 1979, 635
    19.A. P. Alivisatos, J. Phys. Chem., 1996, 100, 13226-13239
    20.T. G. Schaaff, M. N. Shafigullin, J. Phys. Chem. B, 1997, 101, 7885-7891
    21.Michael R. Hoffmann, Scot T. Martin, Chem. Rev., 1995, 95, 69-96
    22.L.A. Grunes, R. D. Leapman, Physical Review B, 1982, 25, 7157-7173
    23.曾亮鋒, 國立中央大學, 2000
    24.Michael R. Hoffmann, Scot T. Martin, Chem. Rev., 1995, 95, 69-96
    25.A. J. Epstein, J. M. Ginder, R. W. Bigelow, Synth Met., 1987, 18, 303
    26.R. Jain, R. V. Gregory, Synth. Met., 1995, 74, 263
    27.J. Y. Bergeron, J. W. Chavaliver, J. Chem. Soc. Chem. Commum., 1990, 180
    28.Dao, J. Chem. Soc. Chem. Commun., 1990, 180-182
    29.My. T. Nguyen, Paul Kasai, Macromolecules, 1994, 27, 3625-3631
    30.A. Ohtani, M. Abe, H. Higuchi, J. Chem. Soc. Chem. Commum. 1988, 1545
    31.Tourillon G.; Garnier F., J. Electrochem. Soc., 1983, 130, 2042-2044
    32.Jen, K. Y.; Oboodi, R.; Elsenbaumer, R. L. Polym. Mater. Sci. Eng. 1985, 53, 79
    33.Hirendera Nath Ghosh, J. Phys. Chem. B 1999, 103, 10382-10387
    34.吳炳佑, 國立中央大學, 1996
    35.L. A. Grunes, R. D. Leapman, Phys. Rev. B, 1982, 25, 7157-7173
    36.黃俊益, 國立中央大學, 2001
    Advisor
  • C. G. Wu(吳春桂)
  • Files
  • 89223007.pdf
  • approve immediately
    Date of Submission 2002-07-18

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