AI Article Synopsis
- A cobalt(III) catalyst enables a dual activation process for creating polycyclic aromatic heterocycles from 2-arylimidazopyridines and N-substituted maleimides, representing a sustainable and cost-effective method compared to traditional catalysts.
- *The resulting maleimide-fused imidazopyridines exhibit strong fluorescence, with specific emission characteristics and an excited state lifetime, along with notable behavior in mixed solvents.
- *These luminescent compounds form spherical nano-aggregates and have potential applications in cellular imaging and sensing picric acid.
Article Abstract
A cobalt(III)-catalyzed dual C(sp)-H/C(sp)-H activation of 2-arylimidazopyridines and its annulation with N-substituted maleimides leads to polycyclic aromatic heterocycles. This sustainable oxidative annulation uses earth-abundant, less toxic, and cost-effective cobalt(III) catalyst that complement expensive 2nd and 3rd-row metals. This oxidative annulation features a broad substrate scope with very good functional group tolerance. These maleimide-fused imidazopyridines display strong fluorescence in the region of 527- 536 nm with a Stokes shift of 83-87 nm and possess an excited state lifetime of 14.6-16.1 ns. Interestingly, such luminescent compounds show aggregation-enhanced emission (AEE) behavior in the Pr-OH/hexane mixed solvent system. Furthermore, field emission scanning microscopy (FESEM) reveals their spherical nano-aggregates with an average diameter of ~216.8 nm. They can also be used as cellular-imaging and picric acid-sensing probes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chem.202403576 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!