Continuous Synthesis of Device-Grade Semiconducting Polymers in Droplet-Based Microreactors
Continuous Synthesis of Device-Grade Semiconducting Polymers in Droplet-Based Microreactors
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DOI：
10.1002/adfm.201203014
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发表时间：
2013-05-06
影响因子：
19
通讯作者：
de Mello, John C.
中科院分区：
文献类型：
--
作者：
Bannock, James H.;Krishnadasan, Siva H.;de Mello, John C.
报道了一种利用基于液滴的微流控反应器控制合成器件级半导体聚合物的方法。使用聚（3-己基噻吩）（P3 HT）作为测试材料，该反应器显示出为聚合物合成提供受控和稳定的环境，使得能够通过调节流动条件、试剂组成或温度来控制分子量。分子量高达92 000 Da很容易达到，没有泄漏或反应器结垢。该方法避免了当常规分批合成从亚克级按比例扩大到更高数量时发生的材料质量的通常劣化，其中原型五通道反应器以约60 g/天的速率生产具有一致分子量分布和高区域规整性（>98%）的材料。液滴合成的P3 HT在吸收光谱、多分散性、区域规则性和结晶度方面与商业材料相比是有利的，在具有[6，6]-苯基-C61-丁酸甲酯的本体异质结太阳能电池中产生高达4%的功率转换效率。
A method is reported for the controlled synthesis of device-grade semiconducting polymers, utilizing a droplet-based microfluidic reactor. Using poly(3-hexylthiophene) (P3HT) as a test material, the reactor is shown to provide a controlled and stable environment for polymer synthesis, enabling control of molecular weight via tuning of flow conditions, reagent composition or temperature. Molecular weights of up to 92 000 Da are readily attainable, without leakage or reactor fouling. The method avoids the usual deterioration in materials quality that occurs when conventional batch syntheses are scaled from the sub-gram level to higher quantities, with a prototype five-channel reactor producing material of consistent molecular weight distribution and high regioregularity (>98%) at a rate of approximate to 60 g/day. The droplet-synthesized P3HT compares favorably with commercial material in terms of absorption spectrum, polydispersity, regioregularity, and crystallinity, yielding power conversion efficiencies of up to 4% in bulk heterojunction solar cells with [6,6]-phenyl-C61-butyric acid methyl ester.