Synthesis and Photophysical Properties of Quinoxaline-Based Blue Aggregation-Induced Emission Molecules
نویسندگان
چکیده
A series of quinoxaline-based compounds 1–4 have been synthesized by Palladium-Catalyzed cross-coupling reaction and their photophysical properties extensively studied. Compounds show deep blue light emission both in solution (λem ≤ 425 nm, CIEy≤0.03) solid-state. Moreover, 1–3 a non-typical aggregation-induced enhanced (AIEE), which would be effective light-emitting materials. The DFT calculation indicated that the HOMO energy levels are distributed throughout molecule, LUMO mainly concentrated on quinoxaline group. while compound 4 is benzene ring at 2,3-position, benzaldehyde group 6,7-position.
منابع مشابه
Largely blue-shifted emission through minor structural modifications: molecular design, synthesis, aggregation-induced emission and deep-blue OLED application.
By simply introducing additional groups with different size and conjugation degree to the 2,2'-positions of BTPE, four BTPE derivatives are prepared which give blue or deep-blue EL emissions when used as emitters in non-doped OLEDs, as the result of the tuned dihedral angles of the biphenyl cores (up to ~89°), providing a new approach to design AIE luminogens with blue and deep-blue emissions.
متن کاملSynthesis and photophysical properties of novel butterfly-shaped blue emitters based on pyrene.
Using 1,3,5,9-tetrabromo-7-tert-butylpyrene as the bromide precursor, a series of novel butterfly-shaped 1,3,5,9-tetraaryl substituted pyrene derivatives were synthesized by the Suzuki-Miyaura cross-coupling reaction. Their thermal, photophysical, electrochemical and related properties were systematically investigated. All compounds were found to exhibit high thermal stabilities with decomposit...
متن کاملInvestigation of aggregation induced emission in 4-hydroxy-3-methoxybenzaldehyde azine and polyazine towards application in (opto) electronics: synthesis, characterization, photophysical and electrical properties
An azine monomer 4-hydroxy-3-methoxybenzaldehyde azine was synthesized by refluxing with ethanolic solution of vanillin with hydrazine hydrate. It was then converted into polyazine by oxidative polymerization. The structure of azine and polyazine was characterized by FT-IR, UV-visible, 1H-NMR and 13C-NMR. Spectral results suggest the formation of polymer, through C-C and C-O-C coupling of the p...
متن کاملDibenzotetraphenylperiflanthene: Synthesis, Photophysical Properties, and Electrogenerated Chemiluminescence
Fissure coupling of the fluoranthene adduct (7,12-diphenyl)benzo[k]fluoranthene (3) using AlCl3/NaCl, CoF3/TFA, or Tl(OCOCF3) gave the new polyaromatic hydrocarbon dibenzo{[f,f']-4,4',7,7'-tetraphenyl}diindeno[1,2,3-cd:1′,2′,3′-lm]perylene (4). Crystal data for 4: triclinic space group P1h, a ) 10.569(2) Å, b ) 11.565(4) Å, c ) 13.001(3) Å, R ) 95.05(2)°, â ) 111.24(1)°, γ ) 100.53(1)°, Z ) 1, ...
متن کاملPyrene-cored blue-light emitting [4]helicenes: synthesis, crystal structures, and photophysical properties.
The synthesis, crystal structures and photophysical properties of two types of pyrene-cored blue-light emitting [4]helicenes (7 and 9) are reported. The chemical structures of all synthesized compounds were fully confirmed by 1H and 13C NMR spectra, mass spectroscopy as well as elemental analysis. Single-crystal X-ray analysis of these [4]helicenes revealed that there are two types of laterally...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 2022
ISSN: ['0008-4042', '1480-3291']
DOI: https://doi.org/10.1139/cjc-2021-0267