TY - JOUR
T1 - Rewritable PEDOT film based on water-writing and electroerasing
AU - Wu, Pingping
AU - Wei, Chunrong
AU - Yang, Wenjie
AU - Lin, Longnian
AU - Pei, Weihua
AU - Wang, Jingxia
AU - Jiang, Lei
N1 - Funding Information:
This work was supported by the MOST of China (2017YFA0204504 and 2017YFA0205903), NSFC (Grant Nos. 51873221, 52073292, 51673207, 51373183, and 61634006), Chinese Academy of Sciences and Dutch research project (1A111KYSB20190072), and Beijing Municipal Science & Technology Commission (No. Z181100004418012).
Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/8/19
Y1 - 2021/8/19
N2 - Rewritable paper has greatly promoted the sustainable development of society. However, the hydrophilicity/lipophilicity of the poly(3,4-ethylenedioxythiophene) (PEDOT) film limits its application as the rewritable paper. Herein, we constructed a repeatable writing/erasing pattern on a PEDOT film (rewritable PEDOT paper) by combining wettability control, water-induced dedoping, and an electrochemical redox reaction. The treatment with a medium-polarity/high-volatility solvent (MP/HVS) adjusted the wettability of the PEDOT film (water contact angle increased from 6.5° to 146.2°), contributing to the formation of a hydrophobic writable substrate. The treatment with a high-polarity solvent (HPS) induced the dedoping of anions in the PEDOT chain, resulting in the film's color changed from blue to purple and serving as a writing process. The intrinsic electrochemical redox (elimination of color change by doping/dedoping of lithium ions in the PEDOT chain) of the PEDOT film enabled the erasing process. This writing/erasing process can be repeated at least 10 times. The patterned PEDOT film maintained excellent stability to standing diverse solvents (low-polarity solvent (LPS) and MP/HVS), high temperatures (350 °C), and irradiation of different light wavelengths (wavelengths of 365, 380, 460, 520, and 645 nm). Additionally, the conductivity of the PEDOT film was quantitatively measured (impedance: LPS, increased 8.84%; MP/HVS, decreased 6.67%; and HPS, increased 27.97%) by fabricating a micropatterned PEDOT electrode. This work will provide a method for the fabrication of PEDOT-based optoelectronic functional materials.
AB - Rewritable paper has greatly promoted the sustainable development of society. However, the hydrophilicity/lipophilicity of the poly(3,4-ethylenedioxythiophene) (PEDOT) film limits its application as the rewritable paper. Herein, we constructed a repeatable writing/erasing pattern on a PEDOT film (rewritable PEDOT paper) by combining wettability control, water-induced dedoping, and an electrochemical redox reaction. The treatment with a medium-polarity/high-volatility solvent (MP/HVS) adjusted the wettability of the PEDOT film (water contact angle increased from 6.5° to 146.2°), contributing to the formation of a hydrophobic writable substrate. The treatment with a high-polarity solvent (HPS) induced the dedoping of anions in the PEDOT chain, resulting in the film's color changed from blue to purple and serving as a writing process. The intrinsic electrochemical redox (elimination of color change by doping/dedoping of lithium ions in the PEDOT chain) of the PEDOT film enabled the erasing process. This writing/erasing process can be repeated at least 10 times. The patterned PEDOT film maintained excellent stability to standing diverse solvents (low-polarity solvent (LPS) and MP/HVS), high temperatures (350 °C), and irradiation of different light wavelengths (wavelengths of 365, 380, 460, 520, and 645 nm). Additionally, the conductivity of the PEDOT film was quantitatively measured (impedance: LPS, increased 8.84%; MP/HVS, decreased 6.67%; and HPS, increased 27.97%) by fabricating a micropatterned PEDOT electrode. This work will provide a method for the fabrication of PEDOT-based optoelectronic functional materials.
KW - doping/dedoping
KW - PEDOT film
KW - rewritable paper
KW - solvent-induced modulation
KW - water-writing/electroerasing
UR - http://www.scopus.com/inward/record.url?scp=85114396824&partnerID=8YFLogxK
U2 - 10.1021/acsami.1c09531
DO - 10.1021/acsami.1c09531
M3 - Article
C2 - 34410101
AN - SCOPUS:85114396824
SN - 1944-8244
VL - 13
SP - 41220
EP - 41230
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 34
ER -