在本論文中，我們將有機半導體材料五苯環和schiff base pyrene衍生物製作成雙分子層的有機薄膜電晶體，應用於銅離子及氰離子偵測。量測到載子遷移率與門檻電壓分別為0.12 cm2/V-s及-22.2伏特，開關電流比為105。我們發現在13種陽離子中，元件只有在遇到含有銅離子的溶液時，門檻電壓及關路電流會有劇烈變化，而在9種陰離子中，只有遇到含氰離子的溶液，飽和電流會降低。在混合兩種離子的溶液中，元件還是只對銅離子、氰離子的選擇性偵測。
而在元件的敏感性測試，我們將銅離子溶液稀釋成20到350微莫爾濃度，氰離子溶液稀釋成100到350微莫爾濃度進行測試。從原子力顯微鏡和紅外線光譜的結果可看出pyrene與銅離子反應形成 pyrene-pyrene* coordination，而與氰離子反應形成benzoxazole ring，因此造成晶粒從長條狀重新自我組織成細小星型的形狀。

In this thesis, we described the self-assembly of pyrene derivative by constructing pentacene / schiff base pyrene derivative(P1) OTFTs for metal and anion sensor. The carrier mobility (µ) of 0.12 cm2/V-s, a threshold voltage (Vth) of -22.20 V, and five orders on/off current ratio device parameters are extracted from bilayer OTFTs. From this device we observed huge change only for Cu2+ among the thirteen metal ions and CN- among the nine anion ions, by changes in Vth and Ioff current for Cu2+ ions whereas Isat decrease for CN- ions. The selectivity of both ions is noticed from the mixed ion solutions.
The sensitivity is executed in different concentrations (ranging from 20 to 350 µM) of Cu2+ and CN- ions (ranging from 100 to 350 µM). The self-assembling of pyrene derivative by forming pyrene-pyrene* coordination with Cu2+ and pyrene derivative rods break into smaller pieces by forming benzoxazole ring in CN- ions are conformed by AFM and IR spectra.

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