3,6-Dimethylamino fluorenone was functionalized with substituents to achieve an absorption maximum at 1012 nm and emission >1300 nm. TD-DFT calculations confirmed that the substituent orbitals contribute to narrowing the HOMO-LUMO energy gap. Imaging with an InGaAs-based SWIR camera and various longpass filters confirmed detection >1300 nm.
FörderungenDeutsche Forschungsgemeinschaft (DFG) Chan Zuckerberg Initiative (CZI) Deep Tissue Imaging grants Helmholtz Imaging Project German Federal Ministry of Education and Research (BMBF) project BetterView Deutsche Forschungsgemeinschaft (DFG) Emmy Noether program National Center for Tumor Diseases (NCT) Helmholtz Zentrum Munchen Central Innovation for SMEs (ZIM) of the German Federal Ministry for Economic Affairs and Climate Action (BMWK)