ArticleJournal of fluorescence2026
A Blue-Green Emitting Oxadiazole: Photophysical, Solvatochromic, and FRET Studies with Core-Shell Quantum Dots.
Article in Journal of fluorescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The development of blue-green emitting organic chromophores with excellent optoelectronic properties remains an important issue. In this context, the newly synthesized oxadiazole-based blue-green emitting chromophore, 2-(4-(2-(anthracen-10-yl)vinyl)phenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (AVBO), was accomplished via the donor-π-acceptor (D- π-A) strategy using a Wittig reaction. The integration of aryl-heteroaryl groups and the oxadiazole group was utilized to obtain efficient blue-green emission with excellent optical properties. AVBO exhibited stable and efficient PL in the range of 485-510 nm across diverse solvent environments. Solvatochromic analysis using multiple correlations (Lippert-Mataga, Bakhshiev, Kawski-Chamma-Viallet, and Reichardt) revealed a significantly higher excited-state dipole moment compared to the ground state ([Formula: see text]>[Formula: see text]), with a parallel orientation ([Formula: see text]). The values calculated using these empirical equations were compared with those calculated computationally. Kamlet-Taft and Catalán MLR analyses further identified dominant non-specific solvent interactions ([Formula: see text]) alongside specific hydrogen-bonding donor contributions. To explore its potential in optoelectronic applications, AVBO was integrated into hybrid systems with ZnSe/ZnS core-shell quantum dots (7-8 nm). This assembly functioned as an efficient FRET mechanism, reaching an efficiency of 88% with Förster radii of 6.14-6.16 nm. The quenching kinetics, validated by Stern-Volmer plots, showed both static and dynamic components with super-diffusion-limited rate constants (k
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