碳量子點具備低製備成本、低生物毒性與高環境友善性等優點，近年來成為一種被高度關注的奈米螢光材料。本研究利用檸檬酸與尿素作為前驅物，以水熱法與異質反應法合成出藍、綠光之摻氮碳量子點，藉由調整前驅物比例、反應溫度、反應時間來改變其螢光波長與放射強度，並以靜電紡絲製備碳量子點/高分子複合纖維，探討溶質濃度、纖維直徑、高分子種類對螢光效果之影響。
本實驗以尿素對檸檬酸比例為15，在160°C 作異質反應4 小時合成之綠光碳量子點，量子效率可達36%，並能應用於選擇性螢光檢測鐵離子(Fe3+)，在離子濃度170 μM 以下具備線性偵測能力。此外，藉由熱轉印技術，碳量子點可在綿織衣物上印製成隱形螢光標籤。

Carbon quantum dots (CQDs) represent a new class of fluorescent nanomaterials that have received much attention due to their good environmental friendliness, low biological toxicity, and production cost. This study uses citric acid and urea as precursors to prepare blue- and green-emitting N-doped CQDs by hydrothermal and heterogeneous reactions. Light emission intensity and wavelength of carbon quantum dots are controllable through adjustments of altering urea/citric acid ratio, heating temperature and reaction time. Furthermore, polymer-CQDs composite fibers are also made by electrospinning. The effect of solute concentration, fiber diameter, and polymer type on the fluorescence property is investigated.
The green-emitting CQDs that synthesized by heterogeneous reaction at 160°C for 4 hours show the quantum yield of 36%. These CQDs can be used for selective detection of Fe3+ ion in aqueous solution and show good linear relationship between fluorescence intensity and Fe3+ concentration from 0 to 170μM. With thermal transfer printing, the CQDs can also be used to fabricate stealthy fluorescent labels on cotton clothing.

目錄
第一章 文獻回顧 1
1.1 碳量子點介紹 1
1.1.1 碳量子點發光性質 1
1.1.2 碳量子點製備方法 4
1.1.3 碳量子點之元素摻雜 12
1.1.4 碳量子點應用 14
1.2 靜電紡絲介紹 19
1.2.1 靜電紡絲原理 19
1.2.2 製程參數對紡絲形貌之影響 20
第二章 研究動機 23
第三章 實驗方法 24
3.1 實驗藥品 24
3.1.1 主要藥品介紹 25
3.2 儀器與器材 27
3.3 實驗流程 28
3.3.1 水熱法碳量子點之製備 30
3.3.2 異質反應法碳量子點之製備 31
3.3.3 量子點/聚乙烯醇厚膜之製備 32
3.3.4 量子點/聚苯乙烯複合電紡絲之製備 32
3.3.5 量子點/聚乙烯醇複合電紡絲之製備 32
3.3.6 熱轉印螢光標籤 33
3.3.7 紫外光-可見光光譜分析 33
3.3.8 光致發光光譜分析 34
3.3.9 量子效率測定 34
3.3.10 穿透式電子顯微鏡分析 35
3.3.11 X 光繞射儀分析 35
3.3.12 能量散佈X 射線譜分析 36
3.3.13 場發射掃描式電子顯微鏡分析 36
3.3.14 傅立葉轉換紅外光譜分析 37
3.3.15 拉曼光譜分析 37
3.3.16 熱穩定性測試 37
3.3.17 光穩定性測試 38
3.3.18 金屬離子檢測 38
第四章 結果與討論 40
4.1 螢光性質分析 40
4.1.1 水熱法碳量子點：尿素比例之影響 40
4.1.2 異質反應法碳量子點：尿素比例之影響 43
4.1.3 異質反應法碳量子點：反應時間與溫度之影響 46
4.1.4 碳量子點/PVA 厚膜 48
4.2 穿透式電子顯微鏡分析(TEM) 49
4.3 X 光繞射分析(XRD) 51
4.4 能量散佈X 射線譜分析(EDS) 52
4.5 紅外線光譜與拉曼光譜分析(FTIR, Raman) 54
4.6 熱穩定性測試 57
4.7 光穩定性測試 59
4.8 碳量子點/高分子電紡絲之螢光與微結構性質 61
4.8.1 HR15/PS 電紡絲 61
4.8.2 HR15/PVA 電紡絲 63
4.9 金屬離子偵測實驗 67
4.10 碳量子點螢光標籤 69
4.10.1 印章壓印標籤 69
4.10.2 熱轉印標籤 70
第五章 結論 72
第六章 參考文獻 73

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