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Simple improvements to Gilch synthesis and molecular weight modulation of MEH-PPV
Polymer Chemistry ( IF 4.1 ) Pub Date : 2020-03-19 , DOI: 10.1039/d0py00072h
Riley O'shea 1, 2, 3, 4, 5 , Wallace W. H. Wong 1, 2, 3, 4, 5
Affiliation  

The solvent and temperature used in the Gilch synthesis of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) were varied to achieve an improved set of reaction conditions. A range of molecular weights from 20 to 500 kg mol−1 were obtained in moderate to near-quantitative yields. The best conditions for producing low molecular weight MEH-PPV (32 kg mol−1, 97% yield) was to use n-pentane as the reaction solvent at 25 °C. For high molecular weight (397 kg mol−1, 65% yield), toluene at 55 °C gave the best result. The photophysical properties for all MEH-PPV samples were examined and no significant variation was found between samples obtained under different polymerization conditions.

中文翻译:

简单改进MEH-PPV的Gilch合成和分子量调节

改变聚[2-甲氧基-5-(2-乙基己氧基)-1,4-亚苯基亚乙烯基](MEH-PPV)的Gilch合成中所用的溶剂和温度,以改善一组反应条件。以中等至接近定量的产率获得了20至500kg mol -1的分子量范围。制备低分子量MEH-PPV(32 kg mol -1,产率97%)的最佳条件是在25°C下使用戊烷作为反应溶剂。对于高分子量(397 kg mol -1,65%的收率),甲苯在55°C时可获得最佳结果。检查了所有MEH-PPV样品的光物理性质,在不同聚合条件下获得的样品之间未发现明显变化。
更新日期:2020-03-19
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