Abstract
Several tetraphenylethene and triphenylamine decorated donor-acceptor (D-A) benzoselenadiazole derivatives with aggregation-induced emission (AIE) features were synthesized and characterized. The photophysical, thermal, electrochemical and electroluminescent (EL) properties, as well as the AIE property of the resulting luminogens are discussed. All the luminogens are soluble in common organic solvents and show high thermal stability with a Td of 399–460 °C. The absolute photoluminescence quantum yield in the solid state ranged from 14.2% to 36.5%. The D–A structures of TPE-Se-TPE, TPA-Se-TPE and TPA-Se-TPA enable them to have aggregation-caused quenching (ACQ) plus aggregation-induced emission enhancement (AIEE) effects dominated by the twisted intramolecular charge-transfer (TICT) and restriction of intramolecular rotations (RIR), respectively. The best device performances were obtained from TPA-Se-TPE with a maximal luminous efficiency of 2.91 cd/A and the maximal brightness is 5855 cd/m2. This is the first report of benzoselenadiazole-based fluorophore with an AIE feature for organic electronics application.
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 callDisclaimer: 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.
