32081-21-3

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• 32081-16-6 2,2',2-nitrilotribenzoic acid 

Relevant academic research and scientific papers

A polycyclic aromatic compound and its application in electroluminescent devices

The present invention relates to a polycyclic aromatic compound, in particular to a triaryl amine series derivative having a bridge structure and its applications. The compound has a structure shown in formula I or II. When the compounds of the present invention is used as a luminescent layer material in an organic electroluminescent device, the luminous efficiency of the device can be effectively improved, the spectral color purity of the device can be improved, and the best technical effect of the brightness of the device luminescence half peak width and narrowness can be obtained.

Aza-Triangulene: On-Surface Synthesis and Electronic and Magnetic Properties

Nitrogen heteroatom doping into a triangulene molecule allows tuning its magnetic state. However, the synthesis of the nitrogen-doped triangulene (aza-triangulene) has been challenging. Herein, we report the successful synthesis of aza-triangulene on the Au(111) and Ag(111) surfaces, along with their characterizations by scanning tunneling microscopy and spectroscopy in combination with density functional theory (DFT) calculations. Aza-triangulenes were obtained by reducing ketone-substituted precursors. Exposure to atomic hydrogen followed by thermal annealing and, when necessary, manipulations with the scanning probe afforded the target product. We demonstrate that on Au(111), aza-triangulene donates an electron to the substrate and exhibits an open-shell triplet ground state. This is derived from the different Kondo resonances of the final aza-triangulene product and a series of intermediates on Au(111). Experimentally mapped molecular orbitals match with DFT-calculated counterparts for a positively charged aza-triangulene. In contrast, aza-triangulene on Ag(111) receives an extra electron from the substrate and displays a closed-shell character. Our study reveals the electronic properties of aza-triangulene on different metal surfaces and offers an approach for the fabrication of new hydrocarbon structures, including reactive open-shell molecules.

Aggregation-state luminescent material with high efficiency and narrow half-peak width

The invention discloses a novel aggregation-state luminescent material with high efficiency and narrow half-peak width, namely an azatriene derivative, a preparation method of the azatriene derivativeand application of the azatriene derivative in an elect

Polycyclic compound nitrogen-containing compound and electronic device

The invention provides a polycyclic nitrogen-containing compound and an electronic device, and relates to the technical field of organic photoelectric materials. According to the invention, a rigid structure of a polycyclic nitrogen-containing compound is introduced; the obtained polycyclic nitrogen-containing compound can effectively inhibit vibration relaxation caused by vibration and rotation of molecules, so that the polycyclic nitrogen-containing compound has a relatively narrow luminescence peak, excellent film-forming property and thermal stability and relatively high fluorescence quantum yield, and can be used for preparing an organic electroluminescent device, an organic field effect transistor and an organic solar cell. In addition, the polycyclic nitrogen-containing compound canbe used as a constituent material of a hole injection layer, a hole transport layer, a light-emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer, and canreduce driving voltage, improve efficiency, brightness and color purity, prolong the service life and the like. In addition, the preparation method of the polycyclic nitrogen-containing compound is simple, raw materials are easy to obtain, and industrial development requirements can be met.

Crystal Engineering of Room Temperature Phosphorescence in Organic Solids

We report a series of highly emissive azatriangulenetrione (TANGO) solids in which the luminescent properties are controlled by engineering the molecular packing by adjusting the steric size of substituents. The co-alignment of “phosphorogenic” carbonyl groups within the π-stacks results in an almost pure triplet emission in HTANGO, TCTANGO, TBTANGO and TITANGO, while their rotation by ≈60° in the sterically hindered tBuTANGO leads to an almost pure singlet emission. Despite strong π-interactions, aggregation-induced quenching and triplet–triplet annihilation are avoided in HTANGO and TCTANGO which display efficient phosphorescence in the solid state. To our knowledge, HTANGO with the solid-state phosphorescence quantum yield of 42 % at room temperature is the most efficient phosphor composed of the 1st/2nd raw elements only.

Heterotriangulene as an electron-transfer mediator in reduction of vic-dibromide compounds

A novel heterotriangulene derivative and its nonfused analogue were successfully prepared, and their electrochemical and optical properties were studied by cyclic voltammetry measurements and UVvis and photoluminescence analyses. The mediatory use of the heterotriangulene derivative for the electrocatalytic reduction of dibromo compounds was also investigated.