Alonso Navarro, Matías J.Zapata Arteaga, OsnatRiera Galindo, SergiGuo, JialiPerevedentsev, AleksandrGutiérrez, EdgarSebastián Reparaz, JuanRamos, María del MarMüller, ChristianMartín, JaimeMás Torrent, MartaSegura Castedo, José LuisCampoy Quiles, Mariano2025-02-212025-02-212025-02-19Alonso-Navarro, Matías J., et al. «Low-Bandgap Oligothiophene-Naphthalimide Oligomeric Semiconductors for Thermoelectric Applications». Journal of Materials Chemistry C, 2025, p. 10.1039.D4TC05383D. DOI.org (Crossref), https://doi.org/10.1039/D4TC05383D.2050-75262050-753410.1039/d4tc05383dhttps://hdl.handle.net/20.500.14352/118274State-of-the-art p-type organic conjugated polymers are mostly thiophene-based semiconductors. Still, novel chemical design and a fresh perspective on different polymer backbones could pave the way for new high-performing materials and a deep understanding of donor-acceptor conjugated assemblies. Herein we designed and synthesized two novel electroactive oligomeric materials based on a donor terthiophene unit endowed with a strong electron-withdrawing naphthalimide unit. This molecular assembly has been polymerized using a palladium cross-coupling reaction with two different linkers, 1,1,1,2,2,2-hexabutyldistannane and (4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b’]dithiophene-2,6-diyl)bis(trimethylstannane), to obtain the target polymers NIP3T-poly and NIP3T-BDT-poly, respectively. Both polymers exhibited an extended absorption up to 1000 nm and higher hole field-effect mobilities of up to 1.8 x 10-3 cm2V-1s-1, in comparison to the molecular assembly NIP3T, and precisely tuned energy levels that make them compatible with common p-type dopants like 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ). After optimizing the doping level, we obtained a thermoelectric figure of merit up to zT = 0.02 for NIP3T-BDT-poly, comparable with benchmark F4TCNQ-vapor doped polythiophenes.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal articlehttps://doi.org/10.1039/D4TC05383Dhttps://pubs.rsc.org/en/content/articlelanding/2025/tc/d4tc05383dopen access547Ciencias23 Química