85884-56-6

Upstream product

• 329763-77-1 4-bromo-N'-[(4-tert-butylphenyl)carbonyl]benzohydrazide 
• 5798-75-4 Ethyl 4-bromobenzoate 
• 1710-98-1 p-tert-butyl benzoyl chloride 
• 586-76-5 4-Bromobenzoic acid 
• 43100-38-5 4-tert-butylbenzoic acid hydrazide 
• 5933-32-4 4-bromobenzoic acid hydrazide 
• 2156-04-9 4-Vinylphenylboronic acid 
• 220843-12-9 2-(4-bromophenyl)-5-(4-(tert-butyl)phenyl)-1,3,4-oxadiazole 
• 124454-24-6 2-[4-(4'-acetylbiphenylyl)]-5-(4-tert-butylphenyl)-1,3,4-oxadiazole 
• 15082-28-7 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole 

Relevant academic research and scientific papers

High-performance near-infrared (NIR) polymer light-emitting diodes (PLEDs) based on bipolar Ir(iii)-complex-grafted polymers

Despite the cost-effective and large-area scalable advantages of NIR-PLEDs based on iridium(iii)-complex-doped polymers, the intrinsic phase-separation issue leading to inferior device performance is difficult to address. In this study, taking the vinyl-f

EMISSIVE COMPOUNDS FOR ORGANIC LIGHT-EMITTING DIODES

Disclosed herein are compounds comprising an optionally substituted (2-phenylpyridinato-N,C2′)(2,4-pentanedionato)Pt(II). Some embodiments provide a light-emitting device, comprising: an anode layer; a cathode layer; and a light-emitting layer positioned

Synthesis of charge transporting block copolymers containing 2,7-dimethoxycarbazole units for light emitting device

The block copolymers consisting of 2,7-dimethoxycarbazole- and oxadiazole-containing segments as hole and electron transporting units, respectively, were synthesized by NMRP manner. OLED devices were fabricated using block copolymer, random copolymer, and polymer blend for matrix of the emitting layer with Ir(ppy)3 as a phosphorescent dopant in order to investigate morphological effect on the performance. From the finding that the block copolymer system overwhelmed the others in EQE, we assumed that a morphology with dimethoxycarbazole units assembled to the surface of PEDOT:PSS played a considerable role for effective recombination of charges as well as sufficient charge injection into the emitting layer.

Investigation of spacer influences in phosphorescent-emitting nonconjugated PLED systems

An assay was introduced to clarify influences on electroluminescent behavior for RGB-colored phosphorescent terpolymers with N,N-Di-p-tolyl-aniline as hole-transporting unit, 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4- oxadiazole (tert- BuPBD) as electron-transporting unit, and different iridium complexes in RGB-colors as triplet emitting materials. All monomers were attached with spacer moieties to the "para" position of a polystyrene. Polymer light emitting diodes (PLEDs) were built to study the electro-optical behavior of these materials. The gist was a remarkable influence of hexyl-spacer units to the PLED performance. For all three colors only very restricted PLED performances were found. In comparison RGB-terpolymers were synthesized with directly attached charge transport materials to the polymer backbone. For this directly linked systems efficiencies were 28 cd A-1 @ 6 V (green), 4.9 cd A-1 @ 5 V (red) and 4.3 cd A-1 @ 6 V (bluish). In summary we assume that an improved charge percolation pathways regarding to the higher content of semiconducting molecules and an improved charge transfer to the phosphorescent dopand in the case of the copolymers without spacers are responsible for the better device performance comparing the copolymers with hexyl spacers. The approach of the directly connected charge transport materials at the nonconjugated styrene polymer backbone should be favored for further investigations, therefore.

Synthesis of a diblock copolymer with pendent luminescent and charge transport units through nitroxide-mediated free radical polymerization

We present the efficient polymerization of a vinyl monomer bearing electron-transporting units, 2-[4-(4′-vinylbiphenylyl)]-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (vPBD), by using a TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl)-mediated radical polymerizat