116668-69-0

Upstream product

• 97511-04-1 2-bromodibenzo[b,d]thiophene 
• 54818-88-1 2-acetylamino-dibenzothiophene 
• 65642-89-9 N-(3-bromo-dibenzothiophen-2-yl)-acetamide 
• 93618-98-5 5,5-dioxo-5H-5λ⁶-dibenzothiophen-3-ylamine 
• 132-65-0 dibenzothiophene 
• 1016-05-3 dibenzothiophene sulfone 
• 92-86-4 4-(4-bromophenyl)bromobenzene 
• 92-52-4 biphenyl 

Downstream Products

• 94994-62-4 9-(phenyl)-2-bromo-9H-carbazole 

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.

S,S-dioxo-dibenzothiophene and phenanthroimidazole based small molecule and application thereof in electroluminescent devices

The invention discloses an S,S-dioxo-dibenzothiophene and phenanthroimidazole based small molecule and application thereof in electroluminescent devices. Phenanthroimidazole is used as a donor unit, S,S-dioxo-dibenzothiophene is used as an acceptor unit, and a novel donor-acceptor type blue fluorescent molecule is constructed. The molecule has the characteristics of S,S-dioxo-dibenzothiophene suchas wide band gap, high fluorescence quantum yield, strong electron affinity, high electron mobility, and also has the characteristics of phenanthroimidazole such as large conjugate rigid structure, bipolar transmission, and the like. The molecule has an asymmetric structure, and can inhibit molecular aggregation and reduce exciton quenching. In addition, the emission spectrum can be adjusted by changing the connection sites of the two units. The small molecule can be used for preparing high-efficiency blue light organic electroluminescent devices with different emission wavelengths.

Emulsion polymerization derived organic photocatalysts for improved light-driven hydrogen evolution

Here, we present the use of mini-emulsion polymerization to generate small particle analogues of three insoluble conjugated polymer photocatalysts. These materials show hydrogen evolution rates with a sacrificial donor under broadband illumination that are between two and three times higher than the corresponding bulk polymers. The most active emulsion particles displayed a hydrogen evolution rate of 60.6 mmol h-1 g-1 under visible light (λ > 420 nm), which is the highest reported rate for an organic polymer. More importantly, the emulsion particles display far better catalytic lifetimes than previous polymer nanoparticles and they are also effective at high concentrations, allowing external quantum efficiencies as high as 20.4% at 420 nm. A limited degree of aggregation of the polymer particles maximizes the photocatalytic activity, possibly because of light scattering and enhanced light absorption.

Luminescent material with naphthoindene carbazole unit containing polar substituent, and preparation and application of luminescent material

The invention belongs to the technical field of organic photoelectricity and discloses a luminescent material with a naphthoindene carbazole unit containing a polar substituent, and a preparation andapplication of the luminescent material. The luminescent material has a structure shown in the description. The luminescent material taking the naphthoindene carbazole unit containing the polar substituent as the center is obtained by taking the naphthoindene carbazole unit containing the polar substituent as a core and selecting a unit having an electron-transport property. The naphthoindene carbazole unit has strong chemical stability and chemical modification performance, and can undergo a variety of chemical reactions. The presence of lone pair electrons on a nitrogen atom, gives the naphthoindene carbazole unit better hole injection and transport properties. The naphthoindene carbazole unit is good in flatness, has high fluorescence quantum efficiency, and is conducive to improve thephotoelectric properties of the material. The luminescent material can be dissolved in polar solvents such as methanol, DMF, DMSO and water. The luminescent material prepared by the invention can be used to prepare a light-emitting layer of a light-emitting diode by a solution processing technology such as spin coating, ink-jet printing or printing film forming.

Construction of Functionalized Annulated Sulfone via SO2/I Exchange of Cyclic Diaryliodonium Salts

A straightforward protocol for diarylannulated sulfone construction is efficiently established via SO2/I exchange of iodonium(III) salts. Readily available inorganic Na2S2O5 was served as a safe and convenient SO2 surrogate. Diverse functionalized diarylannulated sulfones were smoothly achieved in good to excellent yields with great functional group compatibility. Organic light emitting diodes (OLEDs) material molecules were subsequently established via this method in gram scale. The unsymmetrical conjugated systems with donor-acceptor groups and π-conjugation bridges motifs, which substantially communicate electron mobility in semiconductor material molecules, were successfully afforded under the facile conditions of the exchange strategy.

Phosphor material containing heteratomic parent nucleus-o-fluorene ring structure and organic light emitting diode

The invention provides a phosphor material containing a heteratomic parent nucleus-o-fluorene ring structure and an organic light emitting diode and belongs to the technical field of organic photoelectric materials. The technical problems in the prior art that the organic photoelectric material has low luminous efficiency, high driving voltage and other poor luminous properties are solved. The experimental results prove that the organic light emitting diode (OLED) prepared by adopting the phosphor material containing the heteratomic parent nucleus-o-fluorene ring structure disclosed by the invention has the highest luminous efficiency up to 18.8cd/A and the driving voltage of 3.2V. The phosphor material is an excellent OLED material.

based on fragrant heterocyclic and - 3 - S, S - two oxygen benzoin and thiophene unit double-polar small molecular light-emitting material and its preparation and use (by machine translation)

The invention discloses based on fragrant heterocyclic and - 3 - S, S - two oxygen benzoin and thiophene unit double-polar small molecular light-emitting material and its preparation and use. The invention through the Suzuki coupling reaction, the electronic donor unit connected to the heterocycle and - 3 - S, S - two oxygen benzoin and thiophene prepared by the sides of the two units. The invention of based on fragrant heterocyclic and - 3 - S, S - two oxygen benzoin and thiophene unit double-polar small molecular light-emitting material has good solubility, film-forming property and thin membrane shape stability, while at the same time has good electron and hole transmission performance, can balance the carrier injection with the transmission, so that the more electron and hole effectively composite generating excitons, and avoid the hole/electron transport layer with the interface between the mixing phenomenon, thereby improving the efficiency of the light emitting device; based on the material of the luminescent layer in the electroluminescent light-emitting device can be used without the annealing treatment, so that the simple preparation process. (by machine translation)

A promising PET tracer for imaging of α7 nicotinic acetylcholine receptors in the brain: Design, synthesis, and in vivo evaluation of a dibenzothiophene-based radioligand

Changes in the expression of α7 nicotinic acetylcholine receptors (α7 nAChRs) in the human brain are widely assumed to be associated with neurological and neurooncological processes. Investigation of these receptors in vivo depends on the availability of imaging agents such as radioactively labelled ligands applicable in positron emission tomography (PET). We report on a series of new ligands for α7 nAChRs designed by the combination of dibenzothiophene dioxide as a novel hydrogen bond acceptor functionality with diazabicyclononane as an established cationic center. To assess the structure-activity relationship (SAR) of this new basic structure, we further modified the cationic center systematically by introduction of three different piperazine-based scaffolds. Based on in vitro binding affinity and selectivity, assessed by radioligand displacement studies at different rat and human nAChR subtypes and at the structurally related human 5-HT3 receptor, we selected the compound 7-(1,4-diazabicyclo[3.2.2]nonan-4-yl)-2-fluorodibenzo-[b,d]thiophene 5,5-dioxide (10a) for radiolabeling and further evaluation in vivo. Radiosynthesis of [18F]10a was optimized and transferred to an automated module. Dynamic PET imaging studies with [18F]10a in piglets and a monkey demonstrated high uptake of radioactivity in the brain, followed by washout and target-region specific accumulation under baseline conditions. Kinetic analysis of [18F]10a in pig was performed using a two-tissue compartment model with arterial-derived input function. Our initial evaluation revealed that the dibenzothiophene-based PET radioligand [18F]10a ([18F]DBT-10) has high potential to provide clinically relevant information about the expression and availability of α7 nAChR in the brain.

ARYLENE FLUORINATED SULFONIMIDE COMPOSITIONS

Described herein are aromatic sulfonimide compositions that can be used to prepare polymers useful as membranes in electrochemical cells.