聚茀系共軛嵌段共聚合體之合成與物性研究

以Yamamoto合成方法聚合末端基含有環氧胺聚茀系高分子(PFO)，環氧胺末端基具有可逆鍵結特性,可充當活性自由基聚合起始基，進行含乙烯雙鍵之乙烯咔唑(VCZ)、苯乙烯(ST)、咔唑甲基丙烯酸乙酯(MCz) 、異丙基烯醯胺(NIPAM)等單體之聚合反應與PFO共聚得PS-PFO-PS、PVCZ-PFO-PVCZ、P(ST-VCZ)-PFO-P(ST-VCZ)、PCMz-PFO-PCMz、PNIPAM-PFO-PNIPAM等三嵌段共聚物。PS-PFO-PS經滴塗製膜可誘導生成較高PFOβ相含量的形態。PVCZ-PFO-PVCZ、P(ST-VCZ)-PFO-P(ST-VCZ)、PCMz-PFO-PCMz與磷光染料Ir(ppy)3混掺，可提高其能量傳輸效率。PNIPAM-PFO-PNIPAM溶於不同THF/H2O比例的混合溶劑，可控制其β相含量，而熱敏性PNIPAM嵌段可經由溫度變化控制嵌段共聚體中PFO嵌段之β相態含量與微相結構變化。

關鍵字

聚茀系高分子；嵌段共聚物；磷光染料；熱敏性

並列摘要

Using Yamamoto coupling method to polymerize the poly(9,9-dictylfluorene)(PFO) with reversible bonding group of alkoxyamine end-capping on the chain ends acts as the macro initiator of living radical polymerization. The vinyl monomers like vinylcarbazole(VCZ)、styrene(ST)、(N-carbazolyl)ethyl methacrylate, MCz) 、N-isopropylacrylamide(NIPAM) are initiated from the chain ends of PFO block to form the A-B-A triblock copplymers of PS-PFO-PS、PVCZ-PFO-PVCZ、P(ST-VCZ)-PFO-P(ST-VCZ)、PCMz-PFO-PCMz、PNIPAM-PFO-PNIPAM. PS-PFO-PS drop cast to film can induce to form more PFO content of β phase. PVCZ-PFO-PVCZ、P(ST-VCZ)-PFO-P(ST-VCZ)、PCMz-PFO-PCMz blended with phosphorescence dyes of Ir(ppy)3 ehance the energy transfer between PFO block and dye. PNIPAM-PFO-PNIPAM dissolving into THF/water mixed solvents affects the formation of β phase content of PFO block. Thwe thermo-responsive PNIPAM blocks also mediate the β phase contents and micromorphology of triblock copolymer in the various mixed solvents.

並列關鍵字

PFO ； copplymers ； phosphorescence dyes ； thermo-responsive

參考文獻

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聚茀系共軛嵌段共聚合體之合成與物性研究

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