Li, Wan; Chasing, Pongsakorn; Benchaphanthawee, Wachara; Nalaoh, Phattananawee; Chawanpunyawat, Thanyarat; Kaiyasuan, Chokchai; Kungwan, Nawee; Namuangruk, Supawadee; Sudyoadsuk, Taweesak; Promarak, Vinich published an article in 2021. The article was titled 《Intramolecular hydrogen bond-enhanced electroluminescence performance of hybridized local and charge transfer (HLCT) excited-state blue-emissive materials》, and you may find the article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices.Application In Synthesis of 9,10-Dibromoanthracene The information in the text is summarized as follows:
The hybridized local and charge transfer (HLCT) excited state is a successful strategy to produce both high external and internal quantum efficiencies. Based on the HLCT scheme, two isomeric donor-acceptor (D-A)-type excited-state intramol. proton transfer (ESIPT) chromophores of o-hydroxyphenyl phenanthroimidazole (HPI)-based emissive mols. (mTAHPI and pTAHPI) and their OH-protected derivatives (pTAPI) were designed and explored for organic light-emitting diodes (OLEDs). The photophys. study and d. functional theory (DFT) calculations revealed that all mols. possessed the HLCT excited-state characters without exhibiting ESIPT photophys. properties, whereas the NMR spectroscopy, single-crystal and phys. property analyses discovered the existence of strong intramol. H bonds and intermol. interactions in both mTAHPI and pTAHPI. Consequently, their OLEDs displayed blue emissions with a narrow full width at half maximum (65-68 nm) and achieved excellent electroluminescence (EL) performance with a low turn-on voltage of 2.8 V. Particularly, pTAHPI-based devices showed the highest maximum external quantum effciency (EQE) of 8.13% with an ultra-high brightness of 18 100 cd m-2. The maximum singlet exciton utilization efficiency (ηs) of the device was estimated to be as high as 94%, which is among the best results of blue electroluminescence to our knowledge. After reading the article, we found that the author used 9,10-Dibromoanthracene(cas: 523-27-3Application In Synthesis of 9,10-Dibromoanthracene)
9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.Application In Synthesis of 9,10-Dibromoanthracene
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary