Design of Imidazo[1,2-a]pyridine-Based Donor –Acceptor Chromophores through a Multicomponent Approach

Synlett DOI: 10.1055/a-2236-8949 A series of donor-acceptor chromophores was synthesized bearing a 3-aminoimidazo[1,2-a]pyridine donor motive. Through DFT calculations, different combinations of the ImPy donor motive and different electron acceptors were assessed. In combination with an anthraquinone acceptor, the calculated ΔE
ST values were in range to suggest that these compounds would emit via thermally activated delayed fluorescence. Based on these findings, a series of ImPy-Aq emitters with different geometries and substitution patterns was synthesized through GBB-3CR and Suzuki coupling reactions. According to preliminary experimental data, the compounds were only slightly emissive at ambient temperatures due to a combination of low radiative rates and competing non-radiative deactivation pathways. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents  |  Abstract  |  open access Full text

Source: Synlett - February 1, 2024 Category: Chemistry Authors: Stahlberger, Mareen Mergel, Milada dos Santos, John Marques Matulaitis, Tomas Nieger, Martin Zysman-Colman, Eli Br äse, Stefan Tags: letter Source Type: research