Experimental and Computational Optoelectrochemical Investigation of Quinoxaline Based Charge Transfer Derivatives: Green‐Orange Emissive, AIEE Active Materials
2,3-Diphenylquinoxalin-6-yl based dyes were synthesized and characterized using <sup>1</sup>H, <sup>13</sup>C, HRMS and NOSEY spectroscopic technique. The comprehensive photophysical, aggregation-induced emission enhancement (AIEE) activity, electrochemical and theoretical studies of dyes explored. The intramolecular charge transfer transition (ICT) at 380-386 nm in absorption spectra suggest weak push-pull feature of dyes. Dyes show emission in green to orange region (λ<sub>max</sub>: 561-588 nm) in solvent as well as solid state. The Stokes shift of dyes is 7979-9167 cm<sup>-1</sup>. The minimal positive solvatochromism (slight variation in λ<sub>emi</sub>) own by dyes, suggest environment stability of dyes in various solvent polarity. AIEE activity with good emission at solid-state make the dyes suitable candidature for solid state OLED's application. Further Dynamic Light Scattering (DLS) studies of dye 1 validate reverse correlation of emission behavior of nanoaggregate formed at high water fraction of THF-H<sub>2</sub>O mixture with its particle size. The good thermal stability of dyes reflected by decomposition temperature i.e., 221°C-357°C (292°C-372°C) for 5(10)% weight loss. The LUMO (-3.68 to -3.83 eV) of derivatives are lower than LUMO of reported n-type materials (-3.0 to -3.30 eV). Thus, photophysical with AIEE activity and electrochemical properties obtained for dyes signify suitability of it in organic electronics.
Authors
- Sandeep E. Jadhav
- Rajesh M. Kamble (ORCID: https://orcid.org/0000-0001-9059-249X)
- Balaji R. Madje (ORCID: https://orcid.org/0000-0001-9297-4731)
- Sajeev Chacko (ORCID: https://orcid.org/0000-0003-1857-7003)
- Pooja S. Singh
Institutions
- University of Mumbai (IN)
Publication Details
- Journal
- Luminescence
- Published
- 2025-02-27
- DOI
- https://doi.org/10.1002/bio.70130
- Citations
- 3
- Primary Topic
- Organic Light-Emitting Diodes Research
- Type
- article
- Field-Weighted Citation Impact
- 2.19