TY - JOUR
T1 - An Electroactive Filter with Tunable Porosity Based on Glycolated Polythiophene
AU - Gladisch, Johannes
AU - Oikonomou, Vasileios K.
AU - Moser, Maximilian
AU - Griggs, Sophie
AU - McCulloch, Iain
AU - Berggren, Magnus
AU - Stavrinidou, Eleni
N1 - KAUST Repository Item: Exported on 2022-02-01
Acknowledgements: J.G. and V.K.O contributed equally to this work. This work was supported by The Wallenberg Wood Science Center (KAW 2018.0452), the Swedish Research Council—Vetenskapsrådet—VR-2020-05045, the Knut and Alice Wallenberg Foundation, and the Swedish Government Strategic Research Area in Materials Science on Advanced Functional Materials at Linköping University (Faculty Grant SFO-Mat-LiU No. 2009-00971). We also acknowledge financial support from KAUST, as well as from the European Union's Horizon 2020 research and innovation programme under grant agreement No.952911, project BOOSTER grant agreement No.862474, project RoLA-FLEX, grant agreement No.101007084, project CITYSOLAR as well as EPSRC Project EP/T026219/1
PY - 2022/1/28
Y1 - 2022/1/28
N2 - The porosity offilters is typicallyfixed; thus, complex purification processesrequire application of multiple specializedfilters. In contrast, smartfilters withcontrollable and tunable properties enable dynamic separation in a single setup.Herein, an electroactivefilter with controllable pore size is demonstrated. Theelectroactivefilter is based on a metal mesh coated with a polythiophene polymerwith ethylene glycol sidechains (p(g3T2)) that exhibit unprecedented voltage-driven volume changes. By optimizing the polymer coating on the mesh, con-trollable porosity during electrochemical addressing is achieved. The poresreversibly open and close, with a dynamic range of more than 95%, corre-sponding to over 30μm change of pores’widths. Furthermore, the pores’widthscould be defined by applied potential with a 10μm resolution. From amonghundreds of pores from different samples, about 90% of the pores could beclosed completely, while only less than 1% are inactive. Finally, the electroactivefilter is used to control theflow of a dye, highlighting the potential forflow controland smartfiltration applications.
AB - The porosity offilters is typicallyfixed; thus, complex purification processesrequire application of multiple specializedfilters. In contrast, smartfilters withcontrollable and tunable properties enable dynamic separation in a single setup.Herein, an electroactivefilter with controllable pore size is demonstrated. Theelectroactivefilter is based on a metal mesh coated with a polythiophene polymerwith ethylene glycol sidechains (p(g3T2)) that exhibit unprecedented voltage-driven volume changes. By optimizing the polymer coating on the mesh, con-trollable porosity during electrochemical addressing is achieved. The poresreversibly open and close, with a dynamic range of more than 95%, corre-sponding to over 30μm change of pores’widths. Furthermore, the pores’widthscould be defined by applied potential with a 10μm resolution. From amonghundreds of pores from different samples, about 90% of the pores could beclosed completely, while only less than 1% are inactive. Finally, the electroactivefilter is used to control theflow of a dye, highlighting the potential forflow controland smartfiltration applications.
UR - http://hdl.handle.net/10754/675266
UR - https://onlinelibrary.wiley.com/doi/10.1002/smsc.202100113
U2 - 10.1002/smsc.202100113
DO - 10.1002/smsc.202100113
M3 - Article
SN - 2688-4046
SP - 2100113
JO - Small Science
JF - Small Science
ER -