Design and development of full color emissive all-organic fluororphores
Chemistry
We developed a design strategy to bridge the gap between aggregation-caused quenching (ACQ) and aggregation induced emission (AIE) in fluorophores by developing a novel class of dual state emissive (DSE) full color tunable molecules. Computational chemistry assisted core design predicted stable conformers and the effects of steric and various supramolecular interactions were evaluated. The C4 substituent acted as multifunctional stacking modulator. The designed novel molecules were synthesized and evaluated for photophysical properties to confirm their DSE behaviour with striking quantum yield both in solution and solid states. Importantly, molecules exhibited a very rare full color dual emission in both states (solution: 469-672nm, solid: 466-614nm) thus becoming new entrants in the full color dual state emissive (FCDSE) family, which amplifies their potential use in technological applications.
Figure: Graphical abstract from the publication*
Ref: Rakesh R, Bhavya BS, Vishnu A, K.G. Sreejalekshmi: Discovery of full color emissive thiazole fluorophores in solution and solid states: The core is central and regulating torsional barrier does the trick!, Dyes and Pigments, 181, 2020, 108560. ISSN 0143-7208, https://doi.org/10.1016/j.dyepig.2020.108560*
