Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.134
Publication date: 18th July 2023
Conjugated porous polymers (CPPs) are solely organic members of porous materials family. They are very promising compounds for photocatalytic and electronic applications thanks to their the electron rich and porous backbone offering high accessible surface areas and advanced photophysical properties.[1,2] Moreover, their high dimensionality make them particularly interesting for organic electronic devices due to the possibility of orientation independent electron/hole mobility through their 2D/3D skeleton.[3,4] Additionally, the open voids along the porous backbone are perfectly separated phases to introduce guest molecules to form charge-transfer complexes (i.e. doping), which leads improved electrical conductivities.[4]
We have previously reported formation of charge-transfer complexes of electron rich CPPs after iodine treatment.[5–7] In a particular example, we showed that a thiophene based CPP became more conductive after iodine exposure when compared to its linear analogue whereas the latter outperformed the former before the doping.[7]
In this communication, chemical doping an electron rich CPP by using different techniques (i.e. mixing dopant+CPP in solution or vacuum impregnation) will be presented. The spectral (e.g. UV, IR, NMR, EDX, XPS) and physical characterizations (thermal elemental analysis, TGA, and porosity measurements) of the pristine and doped forms indicated the successful incorporation of the guest molecules in the pores. Furthermore, effect of the doping on the electrical impedance and conductivity will also be discussed.
Authors thank the European Union's Horizon 2020 under the Мarie Skłodowska-Curie Grant agreement (Grant No 860403) and the Spanish Government through MCIN/AEI/FEDER (PID2021-124974OB-C21 and PID2019-106315RB-I00) and Maria de Maetzu Unit of Excellence award (Ref: CEX2019-000931-M) for the funding.
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