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PreprintCC BYChemRxiv

Molecular Engineering of a Small-Molecular Yellow-to-Orange Carbonyl-based Multi-Resonance TADF Emitter

  • Janine Haug1,2,3,4
  • André Jung3,4
  • Piotr Banachowicz3,4
  • Olaf Fuhr5
  • Stefan Bräse1,2
  • Eli Zysman-Colman3,4
5 affiliations
  1. 1Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT, Kaiserstrasse 12, Karlsruhe, Germany, 76131
  2. 2Institute of Biological and Chemical Systems - Functional Molecular Systems, Karlsruhe Institute of Technology (KIT, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany, 76344
  3. 3Organic Semiconductor Centre, EaStCHEM School of Chemistry
  4. 4University of St Andrews
  5. 5Institute of Nanotechnology (INT) and Karlsruhe Nano-Micro Facility (KNMFi, Karlsruhe Institute of Technology (KIT, Kaiserstrasse 12, Karlsruhe, Germany, 76131
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Abstract

Red-shifting MR-TADF emitters via donor substitution is an established strategy; however, this typically results in broadened emission and reduced photoluminescence quantum yields (FPL). We report tBuInPZ-DiKTa, fusing an indolophenazine donor directly to the DiKTa core, achieving an unprecedented red-shift for fused DiKTa-based emitters while preserving narrowband emission and high FPL.

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Cite

BibTeXRIS
BibTeX
@misc{haug2026molecular,
  title = {{Molecular Engineering of a Small-Molecular Yellow-to-Orange Carbonyl-based Multi-Resonance TADF Emitter}},
  author = {Janine Haug and André Jung and Piotr Banachowicz and Olaf Fuhr and Stefan Bräse and Eli Zysman-Colman},
  howpublished = {ChemRxiv},
  year = {2026},
  month = sep,
  doi = {10.26434/chemrxiv.15008386/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008386/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Molecular Engineering of a Small-Molecular Yellow-to-Orange Carbonyl-based Multi-Resonance TADF Emitter
AU  - Janine Haug
AU  - André Jung
AU  - Piotr Banachowicz
AU  - Olaf Fuhr
AU  - Stefan Bräse
AU  - Eli Zysman-Colman
PY  - 2026
DA  - 2026/09/07
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15008386/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008386/v1
AB  - Red-shifting MR-TADF emitters via donor substitution is an established strategy; however, this typically results in broadened emission and reduced photoluminescence quantum yields (FPL). We report tBuInPZ-DiKTa, fusing an indolophenazine donor directly to the DiKTa core, achieving an unprecedented red-shift for fused DiKTa-based emitters while preserving narrowband emission and high FPL.
ER  -