Polydiketopyrrolopyrroles Carrying Ethylene Glycol Substituents as Efficient Mixed Ion‐Electron Conductors for Biocompatible Organic Electrochemical Transistors

Gert Krauss,Adrian Hochgesang,John Mohanraj,Sahar Salehi,Florian Meichsner,Philip Schmode,Mukundan Thelakkat

doi:10.1002/adfm.202010048

Gert Krauss, Adrian Hochgesang + Show 5 more

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https://doi.org/10.1002/adfm.202010048

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Abstract

AbstractA comprehensive investigation of four polydiketopyrrolopyrroles (PDPPs) with increasing ethylene glycol (EG) content and varying nature of comonomer is presented, and guidelines for the design of efficient mixed ion‐electron conductors (MIECs) are deduced. The studies in NaCl electrolyte‐gated organic electrochemical transistors (OECTs) reveal that a high amount of EG on the DPP moiety is essential for MIEC. The PDPP containing 52 wt% EG exhibits a high volumetric capacitance of 338 F cm−3 (at 0.8 V), a high hole mobility in aqueous medium (0.13 cm2 V−1 s−1), and a μC* product of 45 F cm−1 V−1 s−1. OECTs using this polymer retain 97% of the initial drain‐current after 1200 cycles (90 min of continuous operation). In a cell growth medium, the OECT‐performance is fully maintained as in the NaCl electrolyte. In vitro cytotoxicity and cell viability assays reveal the excellent cell compatibility of these novel systems, showing no toxicity after 24 h of culture. Due to the excellent OECT performance with a considerable cycling stability for 1200 cycles and an outstanding cell compatibility, these PDPPs render themselves viable for in vitro and in vivo bioelectronics.

Highlights

ΜC*-product can be derived as a geometry and bias independent figure of merit, which gives a direct measure for the Conjugated polymers have become ubiquitous in many kinds mixed organic bioelectronics.[11]. In bioelectronic ion-electron conductors (MIECs) properties.[12]of electronic applications, such as light emitting diodes,[1,2] gm = ∂ID ∂VG (1)G
Introduction μC*-product can be derived as a geometry and bias independent figure of merit, which gives a direct measure for the Conjugated polymers have become ubiquitous in many kinds mixed organic bioelectronics.[11] In bioelectronic ion-electron conductors (MIECs) properties.[12]
We designed and synthesized four PDPP derivatives with increasing content of ethylene glycol from 0% to 52 wt% and varied the location of the same to establish a structure–property relationship

Summary

Introduction

ΜC*-product can be derived as a geometry and bias independent figure of merit, which gives a direct measure for the Conjugated polymers have become ubiquitous in many kinds MIEC properties.[12]. Of electronic applications, such as light emitting diodes,[1,2] gm = ∂ID ∂VG (1).

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