6781-60-8

Upstream product

• 613-94-5 benzoic acid hydrazide 
• 586-75-4 4-chlorobenzoyl chloride 
• 90-90-4 (4-bromophenyl)(phenyl)methanone 
• 98-88-4 benzoyl chloride 
• 5933-32-4 4-bromobenzoic acid hydrazide 
• 872-50-4 1-methyl-pyrrolidin-2-one 
• 619-42-1 4-methoxycarbonylphenyl bromide 
• 586-76-5 4-Bromobenzoic acid 

Downstream Products

• 21510-43-0 2-(4-bromophenyl)-5-phenyl-1,3,4-oxadiazole 
• 1156534-47-2 2-(4-bromophenyl)-5-phenyl-1,3,4-selenadiazole 
• 1082515-54-5 4-bromo-N-(chloro(phenyl)methylene)benzohydrazonoyl chloride 
• 922495-54-3 2-{4-[5-phenyl-[1,3,4]oxadiazol-2-yl]-phenyl}-pyridine 
• 1395928-47-8 1-[4-(5-phenyl-[1,3,4]oxadiazol-2-yl)-phenyl]-isoquinoline 
• 1191060-45-3 (4-(5-phenyl-1,3,4-oxadiazol-2-yl)phenyl)boronic acid 
• 950839-30-2 2-(4-(9H-carbazol-9-yl)phenyl)-5-phenyl-1,3,4-oxadiazole 
• 332848-71-2 3-(4-bromophenyl)-4,5-diphenyl-4H-1,2,4-triazole 

Relevant academic research and scientific papers

Spiroconjugated Tetraaminospirenes as Donors in Color-Tunable Charge-Transfer Emitters with Donor-Acceptor Structure

Charge-transfer emitters are attractive due to their color tunability and potentially high photoluminescence quantum yields (PLQYs). We herein present tetraaminospirenes as donor moieties, which, in combination with a variety of acceptors, furnished 12 charge-transfer emitters with a range of emission colors and PLQYs of up to 99 %. The spatial separation of their frontier molecular orbitals was obtained through careful structural design, and two DA structures were confirmed by X-ray crystallography. A range of photophysical measurements supported by DFT calculations shed light on the optoelectronic properties of this new family of spiro-NN-donor-acceptor dyes.

Nondoped, deep-blue, organic light-emitting diodes with low-efficiency roll-off based on a simple anthracene–triazole hybrid fluorescent molecule

Anthracene is a traditional blue-fluorescence group with excellent electron-transporting ability and high fluorescence quantum efficiency. With the increasingly wide application of anthracene derivatives in electroluminescence (EL) fields, how the molecul

High-performance non-doped blue OLEDs based on 1,2,4-triazole-phenanthroimidazole derivatives with negligible efficiency roll-off

Triazole and phenanthroimidazole moieties are commonly used to construct efficient blue-emitting materials as acceptors and donors, respectively. Benefitting from the D-A coupling of the two moieties, two novel bipolar blue emitters,TAZ-PPIand4NTAZ-PPI, w

Oxadiazole- and indolocarbazole-based bipolar materials for green and yellow phosphorescent organic light emitting diodes

New bipolar materials, namely 2-phenyl-5-(4-(5-phenylindolo [3,2-a]carbazol-12(5H)-yl)phenyl)-1,3,4-oxadiazole (ICz-OXD) and 2,5-bis(4-(5-phenylindolo [3,2-a]carbazol-12(5H)-yl)phenyl)-1,3,4-oxadiazole (2ICz-OXD), were designed and synthesized. Tree different devices were fabricated using ICz-OXD and 2ICz-OXD as host and fluorescent materials: a green phosphorescent, yellow phosphorescent, and non-doped fluorescent OLED emitter. The yellow phosphorescent OLED device based on the 2ICz-OXD host presented good maximum current, power, and external quantum efficiencies, whose values were 47.55 cd/A, 49.80 lm/W, and 21.54%, respectively. Its efficiencies were better than those of the devices based on ICz-OXD and on the reference material 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP). The green phosphorescent OLED device with ICz-OXD revealed higher efficiencies than the device based on 2ICz-OXD. The current, power, and external quantum efficiencies based on ICz-OXD were 49.79 cd/A, 52.14 lm/W, and 16.50%, respectively. The non-doped fluorescent devices that used our bipolar materials (ICz-OXD, 2ICz-OXD) exhibited blue emission at 435 and 442 nm.

A simple D-π-A hybrid mode for highly efficient non-doped true blue OLEDs with CIEy < 0.05 and EQE up to 6%

Although great advances have been achieved in organic electroluminescence fields, highly efficient true blue organic electroluminescence with small CIE coordinates and satisfactory color purity are still limited. Here, we practise a simple and effective m

Oxadiazole-based highly efficient bipolar fluorescent emitters for organic light-emitting diodes

In this study, a series of bipolar fluorescence emitters named 2DPAc-OXD, DPAc-OXD, 2PTZ-OXD and PTZ-OXD were designed and synthesized with excellent yields. The characterization of materials was investigated by using nuclear magnetic resonance (NMR) (1H, 13C), mass spectrometry and thermogravimetric analysis (TGA). To investigate device efficiencies, two different OLED devices (Device 1, Device 2) were fabricated with two different host materials (Bepp2, DPEPO). The Device 2 with 2PTZ-OXD as fluorescent emitter exhibited excellent power and current efficiencies of 6.88 Lm/W and 10.10 cd/A, respectively. The external quantum efficiency of 2PTZ-OXD was around 3.99% for Device 2. The overall device properties of phenothiazine donor were better than acridine derivatives.

Improving the electroluminescence performance of donor-acceptor molecules by fine-tuning the torsion angle and distance between donor and acceptor moieties

The torsion angle and distance between the donor (D) and the acceptor (A) are two important factors in determining the photoluminescence and electroluminescence properties of twisted D-A type organic molecules. Here, two new D-A compounds, 2-(10-butyl-10H-phenothiazin-3-yl)-5-phenyl-1,3,4-oxadiazole (PO) and 2-(4-(10-butyl-10H-phenothiazin-3-yl)phenyl)-5-phenyl-1,3,4-oxadiazole (PPO), were designed and synthesized to tune the torsion angle and distance between D and A moieties, and their photophysical and electroluminescence properties were investigated. The D-A type molecule PO has a planar conformation, whereas the D-π-A type molecule PPO has a twisted conformation because of the insertion of the phenyl bridge between the donor and the acceptor. Therefore, the charge transfer (CT) of PPO is much stronger than that of PO, and the singlet exciton yield of PPO may be higher than that of PO. On the other hand, the introduction of a phenyl unit can also improve the photoluminescence quantum efficiency (doped film ΦPL ≈ 70%). As a result, the PPO-doped device showed better device performance than PO. The device based on PPO as an emitter exhibited stable and high luminous efficiency (15.2 cd A-1, corresponding to an external quantum efficiency of 5.4%), which is increased by about 1.05 fold as compared to the device based on PO as an emitter (luminous efficiency 7.4 cd A-1 and external quantum efficiency 2.9%).

LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE

The present invention refers to and light emitting element using phosphorescent compounds to suitable provides device structure wherein the. Furthermore, the present invention refers to said by the use of having a high emission efficiency light-emitting device with high. In particular, the present invention refers to emits a long-life light-emitting device with high. Hole transport-magnetic host material and phosphorescent compound including number 1 luminescence layer and an electron-transporting host material and phosphorescent compound emitting layer including number 2, number 1 number 2 a luminescent layer number 1 light emitting layer and in contact with one another between electrode number 2 electrode and a light emitting element is is produced.

LUMINESCENT ORGANIC COMPOUND CONTAINING FLUORENE GROUP, AND ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME

The present invention relates to an organic light emitting compound including a fluorine group having a structure in chemical formula 1 where R^1 is carbazole or carbazole derivative, R^2 is triazole or triazole derivative and R^3 or R^4 is one selected from a group consisting of H, CN randomly substituted C1-C4 alkyl or aryl group. In the present invention, provided are an organic light emitting compound, including a fluorine group which has a high efficiency and an outstanding thermostability and emits blue or green with good quality, and an organic light emitting diode including the same.COPYRIGHT KIPO 2015

LUMINESCENT ORGANIC COMPOUND CONTAINING SPIROFLUORENE GROUP, AND ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME

The present invention relates to an organic light emitting compound including a spirofluorene group having a structure in chemical formula 1 where R^1 is carbazole or carbazole derivative, and R^2 is triazole or triazole derivative. In the present invention, provided are an organic light emitting compound, including a spirofluorene group which has a high efficiency and an outstanding thermostability and emits blue or green with good quality, and an organic light emitting diode including the same.COPYRIGHT KIPO 2015