Abstract
Triphenylamine and benzothiazole together form an effective electron donor and acceptor pair, producing a strong and versatile fluorophore. By adjusting the π-bridge between this D-A pair, the fluorescence quantum yield, two-photon absorption cross-section, and current density of electroluminescence devices can be fine-tuned. Three chromophores, namely APCN, ADPCN, and ATCN, featuring phenyl, diphenyl, and thiophene as π-bridges, exhibited fluorescence and solvatochromic properties in solution. When the solubility of solvent was reduced, the fluorescence became even more pronounced due to aggregation. The addition of the cyanovinyl group facilitated this aggregation-induced emission enhancement (AIEE)-like effect, leading to stronger emission rather than radiationless relaxation in the solid state. Moreover, the intramolecular charge transfer improved the nonlinear response, while the coexistence of AIE ensured two-photon excitation fluorescence in solid species. Among the chromophores, ADPCN with a biphenyl π-bridge showed relatively good performance. Additionally, preliminary tests of electroluminescent devices demonstrated their potential as efficient emitting materials. This systematic exploration revealed the impact of organic functional groups on photophysical properties and provided a platform for developing highly fluorescent materials.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Photochemistry and Photobiology A: Chemistry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
