1638533-94-4

Upstream product

• 14862-52-3 1,3-dibromo-5-chlorobenzene 
• 86-74-8 9H-carbazole 
• 13101-40-1 1-bromo-3-chloro-5-iodobenzene 
• 33863-76-2 1-bromo-3-chloro-5-fluorobenzene 

Relevant academic research and scientific papers

ORGANIC ELECTROLUMINESCENCE DEVICE AND POLYCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICE

An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, an electron transport region provided on the emission layer, and a second electrode disposed on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1 to obtain high luminous efficiency:

Compound and application thereof

The invention relates to a compound and application thereof. The compound has a structure as shown in a formula (1). The compound is applied to an organic light-emitting device. The organic light-emitting device comprises a first electrode, a second electrode and an organic layer located between the first electrode and the second electrode, and the organic layer contains the compound shown as theformula (1). According to the invention, through collocation of specific electron withdrawing and electron donating groups, the HOMO and LUMO energy levels of the whole molecule are matched with otherfunctional layers, the transmission barrier of carriers is reduced, and by introducing a heteroaryl substituent group with high mobility, the material, compared with existing materials, can endow devices with lower voltage and higher efficiency.

Compound, display panel and display device

The invention belongs to the technical field of OLEDs and provides a compound as shown in a chemical formula I which is described in the specification. In the chemical formula I, Ar1, Ar2, Ar3 and Ar4are mainly selected from C6-C40 aryl groups and C5-C40 heteroaryl groups; R and R are mainly selected from -C(R)2-,-N(R)-,-O- and -S-; X1, X2 and X3 are selected from C atoms or N atoms; L1 andL2 are selected from phenylene, naphthylene and biphenylene; and Y1 and Y2 represent electron withdrawing groups and are mainly selected from nitrogen-containing heterocyclic substituents and cyano-containing substituents. In the compound disclosed by the invention, electron donating groups are connected to two substitution sites of a benzene ring or a nitrogen heterocyclic ring where X1, X2 andX3 are located, so the compound has the capability of transporting holes; and an amino group containing an electron withdrawing unit is connected to the other substitution site, so the compound has the capability of transporting electrons; and thus, the compound has the capability of transporting holes and electrons at the same time. By introducing a bipolar transmission main body, charge transmission balance in a light-emitting layer is facilitated, an exciton recombination region can be broadened, a device structure is simplified, and device efficiency is improved. The invention further provides a display panel and a display device.

Hole-transport material and application thereof

The invention discloses a compound of a formula shown in the specification. In the formula, Ar1 and Ar2 are respectively independently selected from substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heterocyclic aryl; R1 is

HETERO-CYCLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE SAME

Provided are a hetero-cyclic compound capable of improving lifespan, efficiency, electrochemical stability and thermal stability of an organic light emitting device, and an organic light emitting device in which the hetero-cyclic compound is contained in an organic compound layer.COPYRIGHT KIPO 2017

Site-Selective N-Arylation of Carbazoles with Halogenated Fluorobenzenes

A method for the highly site-selective C-N bond-formation reaction of halogenated fluorobenzenes with carbazoles is described. The selectivity of iodine and fluorine atoms on the aromatic ring of fluorinated iodobenzenes was initially determined with a copper-N,N-diisopropylethylamine catalytic system. By changing the position of the iodine atom on the aromatic ring from the 3- or 4-position to the 2-position, the preferred coupling site was switched from the iodine atom to the fluorine atom. Steric hindrance of the fluorinated iodobenzenes is responsible for the selectivity switch. After elucidating the reaction mechanisms of these reaction processes, a metal-free method for the highly site-selective C-N bond-formation reaction of halogenated fluorobenzenes with carbazoles was revealed through C-F bond activation. The metal-free system is able to handle a range of halogenated groups. Thus, a broad range of chlorinated, brominated, and iodinated N-arylated carbazoles were generated, which are widely useful in organic chemistry.