The Role of the Side Chain on the Performance of N-type Conjugated Polymers in Aqueous Electrolytes.
The Role of the Side Chain on the Performance of N-type Conjugated Polymers in Aqueous Electrolytes.
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DOI：
10.1021/acs.chemmater.8b00321
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发表时间：
2018-05-08
期刊：
影响因子：
--
通讯作者：
McCulloch I
中科院分区：
文献类型：
--
作者：
Giovannitti A;Maria IP;Hanifi D;Donahue MJ;Bryant D;Barth KJ;Makdah BE;Savva A;Moia D;Zetek M;Barnes PRF;Reid OG;Inal S;Rumbles G;Malliaras GG;Nelson J;Rivnay J;McCulloch I
我们报告的设计策略，允许从低沸点溶剂的有机电化学晶体管（OECTs）的溶液加工的n型材料的制备。聚合物主链基于NDI-T2共聚物，其中支链烷基侧链逐渐交换为线性乙二醇基侧链。制备了一系列无规共聚物，其中二醇侧链相对于烷基侧链的百分比为0、10、25、50、75、90和100。对这些进行了表征，以研究极性侧链对与水性电解质的相互作用、其电化学氧化还原反应以及在水性电解质中操作时OECT性能的影响。我们观察到，需要>50%的二醇侧链百分比来实现体积充电，而较低的二醇链百分比显示出具有高所需电压的混合操作，以允许有机半导体的本体充电。发现基于NDI-T2的共聚物的电子迁移率对二醇链的分数的强烈依赖性，随着烷基侧链被二醇侧链取代而显著下降。
We report a design strategy that allows the preparation of solution processable n-type materials from low boiling point solvents for organic electrochemical transistors (OECTs). The polymer backbone is based on NDI-T2 copolymers where a branched alkyl side chain is gradually exchanged for a linear ethylene glycol-based side chain. A series of random copolymers was prepared with glycol side chain percentages of 0, 10, 25, 50, 75, 90, and 100 with respect to the alkyl side chains. These were characterized to study the influence of the polar side chains on interaction with aqueous electrolytes, their electrochemical redox reactions, and performance in OECTs when operated in aqueous electrolytes. We observed that glycol side chain percentages of >50% are required to achieve volumetric charging, while lower glycol chain percentages show a mixed operation with high required voltages to allow for bulk charging of the organic semiconductor. A strong dependence of the electron mobility on the fraction of glycol chains was found for copolymers based on NDI-T2, with a significant drop as alkyl side chains are replaced by glycol side chains.
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影响因子：
16.6
作者：
Inal S;Malliaras GG;Rivnay J
通讯作者：
Rivnay J
影响因子：
6.2
作者：
Higgins, Stuart G.;Muir, Beinn V. O.;Campbell, Alasdair J.
通讯作者：
Campbell, Alasdair J.
影响因子：
41.2
作者：
Giridharagopal, R.;Flagg, L. Q.;Ginger, D. S.
通讯作者：
Ginger, D. S.
影响因子：
29.4
作者：
Inal, Sahika;Rivnay, Jonathan;Malliaras, George G.
通讯作者：
Malliaras, George G.
影响因子：
3.1
作者：
Huetter, Philipp C.;Rothlaender, Thomas;Stadlober, Barbara
通讯作者：
Stadlober, Barbara