Exploring Eco-Friendly Synthetic Strategies for P(NDI2OD-T2) and its Device Applications

Naphthalene diimide bithiophene P(NDI2OD-T2) polymer, also known as N2200, is a commercially available donor-acceptor polymer, which is extensively investigated for its high electron mobility (> 0.85 cm² V^-1 s^-1 in OFET), high power conversion efficiency (PCE) ~5% in all-polymer solar cells (PSC)s, good solution processability, high crystallinity and light absorption capability near-visible and infrared region. Recently our group has demonstrated the energy storage applications of composites of N2200 with carbon nanotubes (CNTs).^{1, 2}The traditional methods for synthesizing these conjugated polymers can be impractical for industrial-scale production due to the need for toxic pre-functionalized monomers and difficulties in purification. Our research group has been engaged in the development of the versatile acceptor polymers based on naphthalene diimide, by conventional and DHAP methods.³In my presentation I will discuss the research efforts from our group to develop cost-effective, scalable, and reproducible synthetic routes for P(NDI2OD-T2) polymer. Continous flow polymerization, direct heteroarylation polymerization and recycling and reusing heterogeneous catalysts are some of the approaches that will be presented.^2-4

References

S. Sandeep; S. Roby; K. Sreekumar and S. K. Asha. Rylene Diimide Based Alternate and Random Copolymers for Flexible Supercapacitor Electrode Materials with Exceptional Stability and High Power Density. J Phys Chem C, 2019, 123, 2084–2093.
B. A Wavhal; M. Ghosh; S. Sandeep; K. Sreekumar and S. K. Asha High-Voltage Non-Aqueous Hybrid Supercapacitor Based on N2200 Polymer Supported Over Multiwalled Carbon Nanotube. Nanoscale 2021, 13, 12314 – 12326.
N. R Kakde; H. J. Bharathkumar; B. A Wavhal; A. Nikam; S. R. Patil; S. R. Dash; K. Vanka; K. Krishnamoorthy; A. Kulkarni and S. K. Asha. Direct (Hetero)arylation (DHAP) polymerization of conjugated polymers – New A-B-A monomer design for P(NDI2OD-T2) & the challenges of adopting DHAP for continuous flow processes. J. Mater. Chem. C, 2022, 10, 13025-13039
N. R Kakde and S. K. Asha. Exploring SiliaCat Pd-DPP as a Recyclable Heterogeneous Catalyst for the Multi-batch Direct heteroarylation polymerization for P(NDI2OD-T2). Polym Chem., 2023, Just accepted. https://doi.org/10.1039/D3PY00183K

Speakers

Asha Syamakumari

KAUST

KAUST Research Centers

KCC Research Groups