本研究中採用含胺基的高分子：聚苯乙烯甲基胺作為穩定劑合成硫化鎘奈米微粒，利用聚苯乙烯甲基胺的胺基對金屬離子的絡合吸附以穩定硫化鎘的粒徑大小與分佈以及抵抗集聚的發生。本研究第一部分利用膠體色層分析儀、核磁共振光譜與傅立葉轉換紅外線光譜儀來鑑定聚苯乙烯甲基胺的合成。第二部分採用紫外光-可見光光譜儀、螢光光譜儀、紫外光燈以及穿透式電子顯微鏡來探討：（1）硫化鎘的生成粒徑與聚苯乙烯甲基胺濃度及反應條件之關聯性、（2）奈米晶體的顆粒大小與發光特性之關聯、（3）以螢光光譜吸收峰研究奈米晶體表面的缺陷、（4）聚苯乙烯甲基胺/硫化鎘的實際分散型態以及硫化鎘奈米晶體的顆粒大小與形狀、（5）奈米晶體與高分子穩定劑（聚苯乙烯甲基胺）的相互作用與發光特性的關係。因此我們可以改變不同的聚苯乙烯甲基胺濃度以及反應條件來改變硫化鎘奈米微粒的粒徑大小進而控制其發光性質。

　　當聚苯乙烯甲基胺濃度提升，吸收光譜與螢光光譜均出現藍位移現象，顯示硫化鎘的粒徑大小降低。當改變酸鹼值時，發現高pH值溶液的穩定性較差並且生成粒徑較大。研究中將探討其發生原因與能量機制。

　　The goal of the research is to use poly(aminomethylstyrene)(PAMS) as the stabilizer to synthesis cadmium sulfide (CdS) nanoparticles. The synthesis and chemical structure of PAMS were characterized in terms of GPC, NMR, and FTIR. Transmission Electron Microscope, UV-vis spectrum, photoluminescence were used to study (1) the effect of concentration of PAMS on the particle size of CdS, (2) the dependence of the photoluminescence properties on the particle size of CdS, (3) the trap state of the CdS nanoparticles, and (4) the size distribution and shape of the CdS nanoparticles. Therefore, by changing the concentration of PAMS and the reaction condition, the particle size of CdS nanoparticles and the photoluminescence properties can be controlled.

　　It is found that as the concentration of PAMS increases, the UV-vis and PL spectra show the blue shift, indicating that the particle size of CdS nanoparticles decrease. Finally, we find that the solution with low pH values is more stable and thus shows smaller particle sizes than that with high pH values.

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