共焦顯微鏡觀察共軛高分子薄膜形變後的發光現象之研究

Confocal Investigation of Isolated MEH-PPV Polymers in Developing Crazes

汪孟寬(Meng-Kuan Wang)

指導教授 ： 白小明

元智大學/電機通訊學院/光電工程學系/碩士(2011年)

https://doi.org/10.6838/YZU.2011.00079

摘要

螢光共軛高分子，在發光元件與太陽能電池等光學產物上，有良好的應用發揮潛力，近年來被廣泛的研究。拉伸MEH-PPV (聚[2-甲氧基-5-(2'乙基己氧基)-1, 4-对苯乙炔]) / PS (聚苯乙烯) 薄膜中，觀察到的結果顯示出，Craze區域的形成能夠增加光致螢光的效果。實驗中使用共焦顯微鏡，研究這些Craze的光學性質，觀察後發現，在拉伸後的樣本中，Craze的發光區域有高度的偏振變化反應，聚合物在Craze區域裡面，相對比在非Craze區域中，提高了30%存活時間，這項實驗結果表示，將MEH-PPV拉伸以後，能夠增加發光誘導以及對抗光致漂白現象。

關鍵字

螢光光譜 ； 共軛高分子 ； 偏光 ； 共焦顯微鏡

並列摘要

Potential applications in light emitting devices and solar cells have led to extensive research into optimizing the optical properties of Luminescent Conjugated Polymers. Straining MEH-PPV (poly[2-methoxy,5-(2'- ethylhexyloxy)-1,4-phenylenevinylene]) / PS (Polystyrene) thin films has been observed to result in craze formation and an enhancement of photoluminescence (PL). Using confocal microscopy, the optical properties of these crazes were investigated. Emission from developed crazes was found to be highly polarized while a variety of effects were found for developing crazes. The survival time of polymers in the crazed regions was increased by over 30% relative to the bulk. This suggests a stretch induced alignment of emitting segments in MEH-PPV as well as an increased resistance to photo-bleaching.

並列關鍵字

MEH-PPV ； Craze Sample ； Fluorescence Spectroscopy ； Conjugated Polymers ； Polarization ； Confocal Microscope ； Labview

參考文獻

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