Highly efficient dual anthracene core derivatives through optimizing side groups for blue emission
摘要:
TP-AA-TPB, TP-AA-TPB, TPB-AA-TPB, TP-AA-DPA, TP-AA-TPA, and TPB-AA-TPA were synthesized using a 9,9'-bianthracene (AA core). Through a systematic side group change, we optimized the dual-core chromophore system and investigated the relationship between the core and the side groups. The ultraviolet-visible (UV-Vis) absorption of the six materials showed an intrinsic absorption peaks of anthracene in the range of 360 nm-410 nm and photoluminescence (PL) emission in the blue region. The minimum decomposition temperatures (T-d) was 425 degrees C, the minimum melting temperatures (T-m) was 335 degrees C, and the minimum glass transition temperatures (T-g) was 176 degrees C. We achieved excellent overall electroluminescence (EL) efficiency in non-doped OLED devices using the six synthesized materials as emitting layer (EML). TPB-AA-TPA synthesized through size and polarity optimization of the side groups on the AA core had a current efficiency of 8.97 cd/A, power efficiency of 4.43 lm/W, external quantum efficiency (EQE) of 6.37%, and Commission Internationale de L'Eclairage coordinates (CIE) of (0.14, 0.19). TPB-AA-TPA also maintained blue emission and realized the highest EL efficiency among the six synthesized materials. (C) 2017 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.dyepig.2017.06.053
作为产物:
描述:
氯(二甲基)硼烷 、 二苯基汞 以
neat (no solvent) 为溶剂,
以37%的产率得到phenylboronic acid
Synthesis and Biological Evaluation of (6- and 7-Phenyl) Coumarin Derivatives as Selective Nonsteroidal Inhibitors of 17β-Hydroxysteroid Dehydrogenase Type 1
coumarines 1 and 2 significantly inhibit 17β-HSD1 in a recombinant enzyme assay, with high selectivity against 17β-HSD2. We postulated that the introduction of various p-substituted phenyl moieties to position 6 or 7 of the coumarin core using the Suzuki-Miyaura cross-coupling reaction would provide mimetics of steroidal structures with improved inhibition of 17β-HSD1. The best inhibitor in the series
Effect of Alkyl Structures on the Anti‐stacking and Anchoring of Pd/
<scp>Diamine‐Functionalized</scp>
Graphene Nanoparticles in Application in Suzuki Reaction
作者:Yinbing Tian、Zijie Tang、Yu Ru、Yuanyuan Wang、Liyi Dai
DOI:10.1002/cjoc.202100265
日期:2021.10
Three diamines (1,8-diaminooctane/p-phenylenediamine/biphenylenediamine) with different alkyl groups were used to synthesize the functionalizedgraphene networks. Pd as the common metal catalyst was used to explore the effects of alkyl types of diamines on anti-stacking, metal anchoring ability of functionalgraphene and hence the catalytic performance. The results were discussed by characterization
Augmenting metallobasicity to modulate gold hydrogen bonding
作者:Logan T. Maltz、Lewis C. Wilkins、François P. Gabbaï
DOI:10.1039/d2cc03328c
日期:——
Enhancing gold's metallobasicity through chloride to phenyl ligand substitution afforded an observable increase in the strength of the Au(i)⋯H–O hydrogen bond.
通过氯代苯基取代增强了金的金属碱度,使Au(i)⋯H-O氢键的强度明显增加。
Electrochemical Annulation of <i>ortho</i>‐Alkynylbiphenyls to Fused Sulfenyl Phenanthrenes and Spiro Cyclohexenone Indenes
10 mA in an undivided cell setup by utilizing CH3CN as a solvent and LiClO4 as an electrolyte at room temperature. Notably, the present strategy enabled the formation of sulfenylphenanthrenes and sulfenyl spiro cyclohexa[4.5]trienones in 70%–95% yield. Scale-up synthesis, mechanistic studies, and cyclic voltammetry have also been carried out.