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Upstream product

• 33255-13-9 3,6-dibromo-9-ethyl-9H-carbazole 
• 25015-63-8 4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane 
• 61676-62-8 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 

Relevant academic research and scientific papers

Synthesis and photophysical properties of doubly β-to-β bridged cyclic ZnII porphyrin arrays

A series of doubly β-to-β bridged cyclic ZnII porphyrin arrays were prepared by a stepwise Suzuki-Miyaura coupling reaction of borylated ZnII porphyrin with different bridge groups. The coupling of the building block of β,β′-diboryl ZnII porphyrin with different bridges provided the doubly β-to-β carbazole-bridged ZnII porphyrin array, the fluorene-bridged ZnII porphyrin array, the fluorenone-bridged ZnII porphyrin array, and the three-carbazole-bridged ZnII porphyrin ring. The structural assignment of was confirmed by the X-ray diffraction analysis, which revealed a highly symmetrical and remarkably bent syn-form structure. The incorporation of bridge units with different electronic effects results in different photophysical properties of the cyclic ZnII porphyrin arrays. Comprehensive photophysical studies demonstrate that the electron-withdrawing bridge fluorenone has the largest electronic interaction with the Zn II porphyrin unit among the series, thus resulting in the highest two-photon absorption cross-section values (σ(2)) of 6570±60 GM for. The present work provides a new strategy for developing porphyrin-based optical materials. Do you cross the bridge or do you fade away: Doubly β-to-β bridged cyclic ZnII porphyrin arrays with carbazole, fluorene, and fluorenone as bridges were constructed. The incorporation of bridge units with different electronic effects results in different photophysical properties of the cyclic ZnII porphyrin arrays.

Polymer and organic light emitting device including polymer

A polymer and an organic light-emitting device including the polymer are provided, wherein the polymer comprises a polymeric unit represented by the Formula: In which variables are as defined herein.

Highly efficient deep-blue emitting organic light emitting diode based on the multifunctional fluorescent molecule comprising covalently bonded carbazole and anthracene moieties

High performance deep-blue organic light-emitting diodes (OLEDs) have been investigated using new multifunctional blue emitting materials 3-(anthracen-9-yl)-9-ethyl-9H-carbazole (AC), 3,6-di(anthracen-9-yl)-9-ethyl-9H- carbazole (DAC), 3-(anthracen-9-yl-)-9-phenyl-9H-carbazole (P-AC), and 3,6-di(anthracen-9-yl)-9-phenyl-9H-carbazole (P-DAC) which comprise covalently bonded carbazole and anthracene moieties. We also have investigated the thermal, electrochemical, and morphological stability to find suitable molecular structure, consisting of carbazole and anthracene moieties. The non-doping deep-blue OLEDs using P-DAC, which showed the highest thermal, electrochemical, and morphological stability, proved the highest luminance efficiency and external quantum efficiency of 3.14 cd A-1 and 2.75%, with the Commission Internationale de l'Eclairage (CIE) chromaticity coordinates (0.162, 0.136) at 100 mA cm-2. Moreover, the doping devices using P-DAC as the host material showed blue emission, and the high luminance efficiencies and external quantum efficiencies of as high as 7.70 cd A-1 and 4.86% with CIE chromaticity coordinates (0.156, 0.136) and (0.156, 0.217) at 100 mA cm-2. Both the non-doping and doping devices using P-DAC uniquely exhibited high operational stability with virtually negligible efficiency roll-off over the broad current density range.