Controlling Electrochemically Induced Volume Changes in Conjugated Polymers by Chemical Design: from Theory to Devices

被引：44

作者：

Moser, Maximilian ^{[1
]}

Gladisch, Johannes ^{[2
,3
]}

Ghosh, Sarbani ^{[2
,4
]}

Hidalgo, Tania Cecilia ^{[5
]}

Ponder, James F., Jr. ^{[6
]}

Sheelamanthula, Rajendar ^{[7
]}

Thiburce, Quentin ^{[8
]}

Gasparini, Nicola ^{[9
,10
]}

Wadsworth, Andrew ^{[1
]}

Salleo, Alberto ^{[8
]}

Inal, Sahika ^{[5
]}

Berggren, Magnus ^{[2
,3
]}

Zozoulenko, Igor ^{[2
,3
]}

Stavrinidou, Eleni ^{[3
]}

McCulloch, Iain ^{[1
,7
]}

机构：

[1] Univ Oxford, Dept Chem, Oxford OX1 3TA, England

[2] Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, SE-60174 Norrkoping, Sweden

[3] Linkoping Univ, Dept Sci & Technol, Wallenberg Wood Sci Ctr, SE-60174 Norrkoping, Sweden

[4] Birla Inst Technol & Sci BITS, Dept Chem Engn, Pilani 333031, Rajasthan, India

[5] King Abdullah Univ Sci & Technol KAUST, Biol Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[6] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

[7] King Abdullah Univ Sci & Technol KAUST, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[8] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[9] Imperial Coll London, Dept Chem, London W12 0BZ, England

[10] Imperial Coll London, Ctr Plast Elect, London W12 0BZ, England

来源：

ADVANCED FUNCTIONAL MATERIALS | 2021年 / 31卷 / 26期

基金：

英国工程与自然科学研究理事会;

关键词：

bioelectronics; electrochemical swelling; MD simulations; organic electrochemical transistors; organic mixed ionic‐ electronic conductors;

D O I：

10.1002/adfm.202100723

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemically induced volume changes in organic mixed ionic-electronic conductors (OMIECs) are particularly important for their use in dynamic microfiltration systems, biomedical machinery, and electronic devices. Although significant advances have been made to maximize the dimensional changes that can be accomplished by OMIECs, there is currently limited understanding of how changes in their molecular structures impact their underpinning fundamental processes and their performance in electronic devices. Herein, a series of ethylene glycol functionalized conjugated polymers is synthesized, and their electromechanical properties are evaluated through a combined approach of experimental measurements and molecular dynamics simulations. As demonstrated, alterations in the molecular structure of OMIECs impact numerous processes occurring during their electrochemical swelling, with sidechain length shortening decreasing the number of incorporated water molecules, reducing the generated void volumes and promoting the OMIECs to undergo different phase transitions. Ultimately, the impact of these combined molecular processes is assessed in organic electrochemical transistors, revealing that careful balancing of these phenomena is required to maximize device performance.

引用

页数：10

共 54 条

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