SKM 2023 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 18: Organic Electronics and Photovoltaics I (joint session CPP/HL)
CPP 18.1: Vortrag
Dienstag, 28. März 2023, 09:30–09:45, GÖR 226
Use of a multiple hydride donor to achieve an n-doped polymer with high solvent resistance — Farzaneh Saeedifard1,2, Dominique Lungwitz3, Zi-Di Yu4, Sebastian Schneider5, Ahmed E. Mansour3,6, •Andreas Opitz3, Stephen Barlow1,2, Michael F. Toney1, Jian Pei4, Norbert Koch3,6, and Seth R. Marder1,2 — 1University of Colorado Boulder, US — 2Georgia Institute of Technology, Atlanta, US — 3Humboldt-Universität zu Berlin, Germany — 4Peking University, China — 5Stanford University, US — 6Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Germany
Insolubilization of doped semiconducting polymer layers can help to fabricate efficient multilayer solution-processed electronic and opto-electronic devices. Here, we present a promising technique to simultaneously n-dope and largely insolubilize conjugated polymer films using tetrakis[4-(1,3-dimethyl-2,3-dihydro-1H-benzo[d]imidazol-2-yl)phenoxymethyl]methane (tetrakis-O-DMBI-H), which consists of four 2,3-dihydro-1H-benzoimidazole (DMBI-H) n-dopant moieties covalently linked to one another. [1] Doping a thiophene-fused benzodifurandione-based oligo(p-phenylenevinylene)-co-thiophene polymer (TBDOPV-T) with tetrakis-O-DMBI-H results in a highly n-doped film with bulk conductivity of 15 S/cm. Optical absorption spectra reveal a film retention of ∼93% after immersion in o-dichlorobenzene for 5 min. This is caused by multiple electrostatic interactions the multiple electrostatic interactions between each dopant tetra-cation and up to four nearby anionic doped polymer segments.
[1] F. Saeedifard et al., ACS Appl. Mater. Interfaces 14 (2022) 33598.