Aqueous processing of organic semiconductors enabled by stable nanoparticles with built-in surfactants
Aqueous processing of organic semiconductors enabled by stable nanoparticles with built-in surfactants
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DOI：
10.1039/d2nr06024h
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发表时间：
2023-03-17
期刊：
影响因子：
6.7
通讯作者：
Nielsen，Christian B.
中科院分区：
文献类型：
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作者：
Marcial-Hernandez，Raymundo;Giacalone，Sofia;Nielsen，Christian B.
当制备共辄聚合物纳米颗粒时，将低聚醚侧链引入到聚合物主链上可以有助于稳定水中的聚合物分散体，而不需要表面活性剂或添加剂。研究了不同极性噻吩衍生物3-（（2-甲氧基乙氧基）甲基）噻吩含量的聚（3-己基噻吩）（P3 HT）衍生物的结构、光学、电化学和电学性质，以及极性链对纳米粒子稳定性的影响。研究结果表明，掺入10- 20%的极性侧链导致颗粒在42天内稳定，具有恒定的粒度和多分散性，然而，来自具有30%极性侧链的聚合物的颗粒显示出聚集效应。聚合物分散体显示出更强的固体状行为在水中的极性侧链含量降低，而薄膜沉积从水被发现提供球状形态和微晶与更各向同性取向相比，传统的溶液处理的膜。作为原理证明，场效应晶体管直接由水性分散体制造，证明具有亲水部分的聚合物可以在水中加工而不需要表面活性剂。
The introduction of oligoether side chains onto a polymer backbone can help to stabilise polymeric dispersions in water without the necessity of surfactants or additives when conjugated polymer nanoparticles are prepared. A series of poly(3-hexylthiophene) (P3HT) derivatives with different content of a polar thiophene derivative 3-((2-methoxyethoxy)methyl)thiophene was interrogated to find the effect of the polar chains on the stability of the formed nanoparticles, as well as their structural, optical, electrochemical, and electrical properties. Findings indicated that incorporation of 10–20 percent of the polar side chain led to particles that are stable over a period of 42 days, with constant particle size and polydispersity, however the particles from the polymer with 30 percent polar side chain showed aggregation effects. The polymer dispersions showed a stronger solid-like behaviour in water with decreasing polar side chain content, while thin film deposition from water was found to afford globular morphologies and crystallites with more isotropic orientation compared to conventional solution-processed films. As a proof-of-principle, field-effect transistors were fabricated directly from the aqueous dispersions demonstrating that polymers with hydrophilic moieties can be processed in water without the requirement of surfactants.