551951-03-2

Upstream product

• 57103-02-3 3,6-diiodocarbazole 
• 98-59-9 p-toluenesulfonyl chloride 
• 86-74-8 9H-carbazole 
• 3165-71-7 9-tosyl-9H-carbazole 
• 98-66-8 4-chloro-benzenesulfonic acid 

Downstream Products

• 551951-18-9 3,6-di-tert-butyl-9-(3-(3,6-di-tert-butyl-9H-carbazol-9-yl)-9-tosyl-9H-carbazol-6-yl)-9H-carbazole 
• 601454-42-6 3,6-bis[3,6-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)-9H-carbazol-9-yl]-9-(4-toluenesulfonyl)-9H-carbazole 
• 56525-79-2 3,6-diphenylcarbazole 
• 1360431-76-0 3,6-Diphenyl-9-tosyl-9H-carbazole 
• 1467737-70-7 3,6-di{3,6-di(9H-carbazol-9-yl)-9H-carbazol-9-yl}-9-tosyl-9H-carbazole 
• 1610059-33-0 C₇₇H₇₁N₃ 

Relevant academic research and scientific papers

Topology-directed design and synthesis of carbazole-based conjugated microporous networks for gas storage

Two topological-directed conjugated microporous networks, P-TPATCz and P-CzPTCz, have been synthesized. The two initial building blocks have a similar chemical constitution but different geometrical configuration (TPATCz: quasi-tetrahedron 3D and CzPTCz: quasi-coplanar 2D structure). Scanning electron microscopy and powder X-ray diffraction indicated that the quasi-tetrahedron structure monomer TPATCz is facile to form columnar crystalline aggregation, whereas the quasi-coplanar monomer of CzPTCz forms amorphous aggregation networks. Thermogravimetric analysis showed that the thermal stability of two networks at high temperature may be affected by the stability of the core in the building blocks. Changing the triphenylamine core of monomer TPATCz to 9-phenyl-9H-carbazole in CzPTCz resulted in an increase in the Brunauer-Emmett-Teller surface area of P-TPATCz (337 m2 g-1) to 1315 m2 g-1 for P-CzPTCz. The hydrogen isotherms of P-TPATCz and P-CzPTCz showed H2 storage up to 0.85 and 1.90 wt% at 77 K/1.1 bar, respectively. At 273 K/1.1 bar, the CO2 uptake capacity of P-CzPTCz was up to 17.0 wt%, which is 5.8 times than that of P-TPATCz. Fine designing and tailoring of the steric configuration of the building block can pre-determine the physicochemical property of the target networks and influence the gas uptake performance.

Synthesis and characterization of carbazole dendrimers as solution-processed high Tg amorphous hole-transporting materials for electroluminescent devices

We report on an efficient and facile synthesis of up to 4th generation carbazole dendrons by using a mild Ullmann coupling reaction. The dendrimers, namely GnC (n = 1-4), are thermally stable amorphous materials with high glass transition tempe

Synthesis of carbazole-based dendrimer: Host material for highly efficient solution-processed blue organic electrophosphorescent diodes

This paper reports the synthesis and physical properties of two novel carbazole-based dendritic host materials Cz-CCP and Cz-mCP for solution-processed blue phosphorescent organic light-emitting devices (PhOLEDs). These dendritic hosts exhibit high triplet energy (≥2.85 eV), excellent film-forming ability (with low root-mean-square (rms) values less than 0.2 nm), high glass-transition temperatures in the range of 242-248 °C, and the appropriate HOMO energy levels (-5.33 - 5.35 eV) facilitating the transfer of holes from Poly(3,4-ethylenedioxythiophene):Poly(styrene-4-sulfonate) (PEDOT:PSS) to the emitting layer. The single-layer device using Cz-CCP and Cz-mCP as the host for the phosphorescence emitter iridium(III) bis(4,6-difluorophenylpyridinato)-picolinate (FIrpic) showed the maximum luminance efficiencies of 9.6 and 10.8 cd A-1, respectively. By introducing a thin 1,3,5-tris(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBI) electron-transporting and exciton-confining layer, the maximum efficiency of the solution-processed double-layer device based on Cz-CCP and Cz-mCP can be further improved to 20.5 and 22.7 cd A-1, and maximum external quantum efficiencies as high as 10.2% and 11.5%, respectively. These results demonstrated that the newly synthesized, carbazole-based dendritic host materials are advantageous for fabrication of highly efficient blue PhOLEDs.

Strategy to improve the efficiency of solution-processed phosphorescent organic light-emitting devices by modified TADF host with tert-butyl carbazole

A new bipolar host material t3Cz-SO was designed and synthesized by introducing tert-butyl carbazole unit to the peripheral of parent TADF units. The calculated triplet energy and ΔEST of t3Cz-SO are 2.85 and 0.11 eV, respectively. Moreover, t3

Dendritic iridium complex electroluminescent material capable of solution processing and synthetic method thereof

The invention discloses a dendritic iridium complex electroluminescent material capable of solution processing and a synthetic method thereof. The molecular structure consists of two parts, one part is an iridium complex with room temperature phosphorescence property as a luminescent core, the other part is a racial with high triplet state energy level as a peripheral branch radial, and the two parts are connected through a non-conjugated radical. The molecule is of the structure as shown in the specification, wherein C1 to C3 are ionic dendritic iridium complexes, and C4 to C6 are neutral dendritic iridium complexes of similar structure. R1 and R2 are high triplet state energy level radicals with non-conjugated radical ends. The problems of synthesis, purification, device preparation technology and cost, existing in wet process preparation devices, of iridium complex materials can be solved.

Effect of conjugation and aromaticity of 3,6 di-substituted carbazoles on triplet energy and the implication of triplet energy in multiple-cyclic aromatic compounds

It is well-known that short conjugation is needed to obtain a high triplet energy. Carbazole has 3 fused rings and yet it has a high triplet energy. In order to illuminate the reason behind this, we synthesized a range of carbazole derivatives with substitution at the 3,6-positions. All carbazoles with phenyl moieties substituted at the 3,6-positions exhibit a lower triplet energy than that of carbazole itself. We also quantified the aromaticity of carbazole using the nucleus-independent chemical shift tensor. We discovered that the five-membered heterocyclic aromatic ring in carbazole has reduced aromaticity. This results in a reduced conjugation effect between the five-membered heterocyclic aromatic ring and the neighboring benzene rings. Inspired by this finding, the triplet energies of compounds with up to seven benzene units separated by heterocycles (furan, pyrrole, thiophene, silole, and phosphole) and cyclopentadiene were calculated using time-dependent density functional theory. A high triplet energy (>3 eV) can be obtained by alternating high aromaticity and reduced aromaticity in highly extended fused π systems containing furan and pyrrole. In tricyclic aromatic compounds (dibenzofuran, carbazole, fluorene, dibenzothiophene, 5H-benzo[b]phosphinedole and 9H-9-silafluorene) and their extended fused π systems that we have examined so far, the triplet energy is related to the electronegativity of the oxygen, nitrogen, carbon, sulfur, phosphorous and silicon atoms. These findings provide new intuitive insight related to the structures of molecules and the triplet energies, which could be useful in organic optoelectronics.

Compound taking tri-carbazole as core and application thereof in organic electroluminescence device

The invention discloses a compound taking tri-carbazole as a core and an application thereof in an organic electroluminescence device. The compound taking tri-carbazole as the core has the characteristics of being unlikely to crystallize and gather among

Triazine derivative and application thereof on organic electroluminescence device

The invention discloses a triazine derivative and application thereof on an organic electroluminescence device. The compound takes triazine as a core and has the characteristics of difficulty in crystallization among molecules, difficulty in aggregation a

Deep-blue thermally activated delayed fluorescence dendrimers with?reduced singlet-triplet energy gap for low roll-off non-doped solution-processed organic light-emitting diodes

Two TADF dendrimers composed of diphenylsulfone core and oligo-carbazole dendrons were developed. Compared with the reported small molecular TADF emitter bis[4-(3,6-di-tert-butylcarbazole)phenyl]sulfone (G1), dendrimers G2 and G3 inherited the blue light

Fused heterocycles possessing novel metal-free organic dyes for dye-sensitized solar cells

A series of fused heterocycles possessing novel metal free organic dyes viz., CPTAA-1, CPTAA-2, TCPTAA-1 and TCPTAA-2 has been designed and synthesized as sensitizers for dye-sensitized solar cells (DSSCs). Explorations on the relationship between the dye