鈉、鉀之四牙配體錯合物用於內酯之開環聚合反應;Sodium and potassium tetradentate ligand complexes are used in the ring-opening polymerization of lactones

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/92074

Title:	鈉、鉀之四牙配體錯合物用於內酯之開環聚合反應;Sodium and potassium tetradentate ligand complexes are used in the ring-opening polymerization of lactones
Authors:	吳成修;Wu, Chang-Siou
Contributors:	化學學系
Keywords:	開環聚合反應;內酯;ring-opening polymerization;lactone
Date:	2023-08-15
Issue Date:	2024-09-19 14:49:11 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究成功合成出具有四個配位點的氨基配位基，並且與叔丁醇鈉和叔丁醇鉀反應，合成出錯合物Na-1-tBuOH、Na-1、Na-1-nBuOH、K-1-tBuOH、K-2。這些催化劑對ε-Caprolactone、L-Lactide及γ-Valerolactone都具有相當高的活性。K-1-tBuOH對ε-Caprolactone單體的催化中，在分子數比為單體:催化劑:起始劑=100:1:1的催化條件下，4分鐘的反應時間內可達到96%的轉換率，且有優異的分子量分布度(PDI=1.13)。Na-1-tBuOH活性較略低於K-1-tBuOH，於單體:催化劑:起始劑=100:1:1條件下，反應16分鐘可達98%轉換率，但分子量分布度較鉀略有提升 (PDI=1.09)。因此，此類催化劑對於開環聚合反應的應用具有相當高的潛力。;This study successfully synthesized amino ligands with four coordination sites and reacted them with sodium tert-butoxide and potassium tert-butoxide, resulting in the formation of the corresponding coordination complexes Na-1-tBuOH, Na-1,Na-1-nBuOH,Na-2-tBuOH, K-1-tBuOH, and K-2. These five catalysts exhibited high activity towards ε-Caprolactone, L-Lactide, and γ-Valerolactone. Among them, K-1-tBuOH showed excellent catalytic activity for ε-Caprolactone monomer under the conditions of monomer:catalyst:initiator molar ratio of 100:1:1 and a reaction time of 4 minutes, achieving a conversion rate of 96% with a remarkable molecular weight distribution (PDI=1.13). Na-1-tBuOH exhibited slightly lower activity than K-1-tBuOH, reaching a conversion rate of 98% after 16 minutes of reaction time under the same conditions, but with a slightly improved molecular weight distribution (PDI=1.09) compared to potassium. Therefore, these types of catalysts show great potential for applications in ring-opening polymerization reactions.
Appears in Collections:	[化學研究所] 博碩士論文

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