Enhanced adhesion of PEDOT:PSS to substrates using polydopamine as a primer

Utilization of the conducting polymer PEDOT:PSS in flexible optoelectronic devices is hindered by poor adhesion to flexible, polymer-based substrates. In this communication, the ability of poly(dopamine) (PDA) to act as a primer and improve adhesion is probed. The presence of hydrophilic PDA on the...

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Bibliographic Details
Published in:Polymer journal 2024-02, Vol.56 (2), p.115-120
Main Authors: Carter, Joseph L., Kelly, Catherine A., Jenkins, Mike J.
Format: Article
Language:English
Subjects:
639/301/54
639/638/298
Adhesion
Biomaterials
Bioorganic Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Conducting polymers
Dopamine
Electrical resistivity
Glass substrates
Optoelectronic devices
Original Article
Polyethylene terephthalate
Polymer Sciences
Polymers
Polypropylene
Surfaces and Interfaces
Thin Films
Wettability
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Summary:Utilization of the conducting polymer PEDOT:PSS in flexible optoelectronic devices is hindered by poor adhesion to flexible, polymer-based substrates. In this communication, the ability of poly(dopamine) (PDA) to act as a primer and improve adhesion is probed. The presence of hydrophilic PDA on the surface of the substrate increased the wettability of polypropylene (PP); however, it was reduced for poly(ethylene terephthalate) (PET). Despite this, PDA was established as an effective primer to improve the quality and adhesion of pristine PEDOT:PSS and PEDOT:PSS/Tween 80 films on glass, PP and PET substrates. In addition, PDA did not negatively impact the sheet resistance of the PEDOT:PSS/Tween 80 films, indicating its suitability as a primer in flexible optoelectronic devices. Poly(dopamine) (PDA) was investigated as a primer to enhance adhesion in flexible optoelectronic devices using the conducting polymer PEDOT:PSS. PDA improved wettability on polypropylene (PP) but reduced it on poly(ethylene terephthalate) (PET). However, PDA enhanced the quality and adhesion of pristine PEDOT:PSS and PEDOT:PSS/Tween 80 films on glass, PP, and PET. Crucially, it did not negatively affect sheet resistance of PEDOT:PSS/Tween 80 films, establishing its suitability as a primer for flexible substrates. This research addresses a key challenge in utilizing PEDOT:PSS in flexible optoelectronics, enhancing its performance on various substrates.
ISSN:0032-3896
1349-0540
DOI:10.1038/s41428-023-00846-w