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研究生: 洪真慧
Hung, Chen-Hui
論文名稱: 冠狀醚-碳六十液體層析壓電晶體偵測器之研製與應用
Preparation and Application of Crown Ether-Fullerene
指導教授: 施正雄
Shih, Jeng-Shong
學位類別: 碩士
Master
系所名稱: 化學系
Department of Chemistry
畢業學年度: 84
語文別: 中文
論文頁數: 4
中文關鍵詞: 碳六十冠狀醚壓電晶體
英文關鍵詞: Crown ether, Fullerene, PZ
論文種類: 學術論文
相關次數: 點閱:232下載:0
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  • 在本研究中利用極性的冠狀醚-羧酸雙苯16冠5 (sym-dibenzo-16-
    crown-5-oxyacetic acid, DB16C5~COOH) 和碳簇分子-碳六十(C60),成
    功地合成出一種冠狀醚-碳六十複合物(DB16C5~COOC60),並將其塗佈在石
    英晶片電極膜上,做為石英壓電晶體偵測器(piezo-electric quartz
    crystal detector),並且應用在於離子層析儀上;石英晶體振盪器的石
    英膜表面,會因吸附離子或分子化合物,而使負載之重量增加,造成石英
    晶體振盪頻率隨之遞減,再透過自製微電腦介面中的頻率-電壓(F/V)轉換
    器,將振盪頻率轉換成類比電壓訊號,再經類比/數位轉換器轉成數位訊
    號,輸出至電腦做數據處理。 本研究中所研製出的冠狀醚-碳六十液
    體層析石英壓電晶體膜感測器,對離子化合物偵測的線性範圍是從0.1M
    ~5×10-4M,而偵測極限分別為(1)鹼金屬離子約為3×10-3M(1.5
    ×10-5mmole);(2)鹼土金屬離子約為5×10-4M(2.5×10-6mmole);(3)
    過渡金屬離子約為1×10-3M(5×10-6mmole);不同的離子其偵測極限亦
    有所不同,IIA族鹼土金屬離子>過渡金屬離子>IA族鹼金屬離子,此與
    離子的直徑大小和價數有關。 本研究之碳六十-冠狀醚石英壓電偵測
    器,除了對金屬離子化合物有好的再現性和靈敏度之外,對於有機離子以
    及有機分子、溶劑亦有良好的偵測結果;在極性有機分子方面,以胺類的
    吸附感應最好,為胺類>有機酸>醇類>>酮類;而在非極性有機分子方
    面,分別偵測單鍵、雙鍵以及三鍵之己烷、己烯和己炔,結果本研究之碳
    六十-冠狀醚石英壓電偵測器對炔類的偵測感應最好,為炔類>>烯類>
    烷類,此乃因為本研究合成之複合物,有類似缺電子的碳六十那端與多電
    子之缺類產生吸附力所致。 本研究之碳六十-冠狀醚石英壓電偵測器
    ,同時與商業上所使用的導電度計,在穩定性與再現性方面,都擁有良好
    的競爭性。

    Fullerene ( C60 )-crown ether ( sym-dibenzo-16-
    crown-5-oxyacetic acid ) derivative ( DB16C5~COOC60 ) was
    prepared , and DB16C5~ COOC60 derivative coated piezoelectric
    quartz crystal membrane detector for ion chromatograph with a
    microcomputer interface for signal processing was designed to
    detect various organic ions and metal ions in solution .
    The C60-crown ether piezoelectric quartz detector exhibited high
    sensitivity for the change of its surface weight , the C60-crown
    ether quartz crystal membrane showed adsorptive ability to
    adsorb various ions in ion chromatography . Mean while , the
    mass increase of quartz crystal surface membranes caused the
    decrease in oscillating frequency of quartz, and the variations
    of the crystal frequencies were converted to voltage with a
    frequency to voltage converter , and followed by amplification
    with OPA and data acqusition with an analog to digital converter
    . The C60-crown ether piezoelectric quartz detector was
    applied to detect various ions such as alkali metal , alkaline
    earth metal and transition metal ions with detection limits
    between 5×10-4 M ~ 1×10-3 M . The detection limits were
    3×10-3 M (1.5×10-5 mmole) , 5×10-4 M (2.5×10-6 mmole) and
    1×10-3 M (5×10-6 mmole) for alkali metal , alkaline earth
    metal and transition metal ions respectively. The ionic sizes
    and ionic charges seemed to give some significant effect on the
    detection limits of these ions. The crown ether - C60
    piezoelectric quartz detector was also emlpoyed to detect
    various organic polar molecules such as amines, alcohols ,
    carboxylic acids and ketones ,and the piezoelectric quartz
    detector's responses were in the order : amine > carboxylic
    acid > alcohol > ketones ( R-NH2 > R-COOH > R-OH > acetone
    ) . In addition , nonpolar organic molecules such as n-hexane ,
    1-hexene anf 1-hexyne were also detected with the C60 - crown
    ether piezoelectric quartz detectorand their detection responses
    were in the order : 1-hexyne >> 1-hexene > n-hexane .
    The piezoelectric quartz detector showed quite good sensitivity
    , short response time ( < 1 min ) and good reproducibility . The
    C60- crown ether piezoelectric quartz detector demonstrated
    competitive responses as a commercial conductivity detector
    conventionally used in ion chromato-graphy.
    Fullerene ( C60 )-crown ether ( sym-dibenzo-16-

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