40307-15-1

Usage

Structure

Heterocyclic compound with two benzene rings fused to a thiophene ring, with two bromine atoms and two oxygen atoms attached to the thiophene ring

Reactivity

Highly reactive

Application

Versatile building block for the synthesis of various organic compounds

Use in Electronics

Widely used in the development of materials for organic electronics, such as OLEDs and OPVs

Properties

Unique structure and properties make it valuable in the research and development of advanced electronic materials

Potential Use

Studied as a dopant in organic semiconducting materials to enhance electronic device performance

Upstream product

• 132-65-0 dibenzothiophene 
• 92-52-4 biphenyl 
• 31574-87-5 2,8-dibromodibenzothiophene 

Relevant academic research and scientific papers

Novel dibenzothiophene chromophores with peripheral barbituric acceptors

A series of novel chromophores based on central 2,8-disubstituted dibenzothiophene (DBT) or dibenzothiophene-S,S-dioxide (DBTO) has been designed and prepared. The interconnection of DBT(O) central scaffold with two peripheral barbituric acceptors via various π-spacer allowed significant property tuning of target chromophores. Four new final chromophores and six DBT(O)-intermediates have been successfully synthesized and fully characterized. Experimental and calculated data showed that the fundamental properties are affected by the chromophore A-π-D-π-A or A-π-A-π-A arrangement (DBT vs. DBTO) and the π-linker (ethenylene vs. ethynylene). Thorough structure-property relationships have been elucidated and discussed in detail.

Novel yellow phosphorescent iridium complexes with dibenzothiophene-S,S-dioxide-based cyclometalated ligand for white polymer light-emitting diodes

We have designed and synthesized two novel yellow phosphorescent iridium complexes using dibenzothiophene-S,S-dioxide-based cyclometalated ligand for the first time, which are capable of producing highly efficient yellow and white polymer light-emitting devices (PLEDs). The resulted iridium complexes display good thermal stability and high photoluminescence quantum yields. Both yellow and white PLEDs are fabricated with an identical single-emission-layer configuration of ITO/PEDOT:PSS/emission layer (EML)/CsF/Al. For the yellow phosphorescent PLEDs based on (p-CzFSOPy)2IrPic, the best device performances with a peak luminous efficiency (LE) of 13.3 cd/A and a peak external quantum efficiency (EQE) of 5.3% are achieved. More importantly, the two-element WPLEDs containing iridium (III)bis (2-(4,6-difluorophenyl)-pyridinato-N,C2′) picolinate (FIrpic) as blue and (p-CzFSOPy)2IrPic as yellow phosphors doped into a PVK:OXD-7 matrix at an appropriate ratio exhibited a maximum LE of 19.2 cd/A, a maximum EQE of 9.6%, an extremely high luminance of 18717 cd/m2 and Commission Internationale de L'Eclairage (CIE) coordinate of (0.317, 0.448). Moreover, at a luminance for practical application of 1000 cd/m2, the LE still remains as high as 19.0 cd/A, with a very slight decrease.

Ruthenium complex luminescent material containing dibenzothiophene sulfone group and use thereof

The invention discloses a ruthenium complex luminescent material containing a dibenzothiophene sulfone group and a use thereof. The ruthenium complex takes a dibenzothiophene sulfone pyridine derivative as a ring metal ligand and takes picolinic acid as an auxiliary ligand; and a hole transport unit is introduced on the ring metal ligand, to balance the electron and hole transport capability of the ruthenium complex. The ruthenium complex is doped in PVK and PBD to form a light-emitting layer, and a high-efficiency polymer yellow light device is obtained; the ruthenium complex and FIrPic are mixed as a dopant, are doped into polymer PVK and OXD-7 to form a light-emitting layer. The complementary color principle is utilized to obtain an efficient polymer white light device, and the application of an OLED in flat panel display and white light lighting is promoted.

Efficient deep-blue electroluminescence based on phenanthroimidazole-dibenzothiophene derivatives with different oxidation states of the sulfur atom

Developing efficient deep-blue materials is a longterm research focus in the field of organic light-emitting diodes (OLEDs). In this paper, we report two deep-blue molecules, PITO and PISF, which share similar chemical structures but exhibit different pho

Blue oligomer based on dibenzothiophene-S,S-dioxide unit and preparation method and application of blue oligomer

The invention discloses a blue oligomer based on a dibenzothiophene-S,S-dioxide unit and a preparation method and application of the blue oligomer. The blue oligomer is mainly characterized by comprising a fluorene structure unit and the dibenzothiophene-S,S-dioxide structure unit. The preparation method mainly comprises the step of preparation of the blue oligomer based on the dibenzothiophene-S,S-dioxide unit. Due to the fact that the electroluminescence efficiency and the spectral stability are improved by introducing the dibenzothiophene-S,S-dioxide structure unit into the oligomer, the novel oligomer blue-light emitting material is obtained. According to the obtained blue oligomer based on the dibenzothiophene-S,S-dioxide unit, an electroluminescence device prepared through film formation of a solution processing method is high in efficiency, good in spectral stability and suitable for being adopted as a light-emitting layer of a light-emitting diode and a flat-panel displayer.

Organic light-emitting diode materials

Described herein are molecules for use in organic light emitting diodes. Example molecules comprise at least one acceptor moiety A, at least one donor moiety D, and optionally one or more bridge moieties B. Each moiety A is covalently attached to either the moiety B or the moiety D, each moiety D is covalently attached to either the moiety B or the moiety A, and each moiety B is covalently attached to at least one moiety A and at least one moiety D. Values and preferred values of moieties A, D, and B are defined herein.

The interplay of thermally activated delayed fluorescence (TADF) and room temperature organic phosphorescence in sterically-constrained donor-acceptor charge-transfer molecules

A series of phenothiazine-dibenzothiophene-S,S-dioxide charge-transfer molecules have been synthesized. Increasing steric restriction around the donor-acceptor bond significantly alters contributions from TADF and phosphorescence. Bulky substituents on th

Bipolar micromolecular luminescent material based on 4-(9H-carbazole-9-yl) aniline and preparation method and application thereof

The invention discloses a bipolar micromolecular luminescent material based on 4-(9H-carbazole-9-yl) aniline and a preparation method and application thereof. The material is mainly characterized in that the 4-(9H-carbazole-9-yl) aniline is used as a hole transport center unit, and bipolar micromolecules with the 4-(9H-carbazole-9-yl) aniline as the center are obtained by selecting groups with an electron transmission function. The bipolar micromolecules prepared through the method can be used for making a luminescent layer of an organic light emitting diode.

Fluorescent and electrochromic polymers from 2,8-di(carbazol-9-yl)dibenzothiophene and its S,S-dioxide derivative

We report the synthesis and characterization of two carbazole-endcapped monomers, namely 2,8-di(carbazol-9-yl)dibenzothiophene (SCz) and 2,8-di(carbazol-9-yl)dibenzothiophene S,S-dioxide (SO2Cz), and their derived polymers PSCz and PSO2Cz prepared by both FeCl3 oxidative coupling and electropolymerization processes. The dilute solutions of PSCz and PSO2Cz prepared by chemical oxidative coupling exhibited fluorescent and solvatochromic behavior. Thin polymeric films could be robustly electrodeposited onto the surface of the ITO-glass substrate by repetitive cyclic voltammetry scanning of monomers SCz and SO2Cz in an electrolyte solution between 0 and 1.8?V. The electrochemically generated polymer films exhibited two reversible oxidation redox couples due to successive oxidations of the biscarbazole unit. These polymer films also revealed good electrochemical and electrochromic stability, with coloration change from a colorless neutral state to yellow, green and blue oxidized states. Switching ability of the polymers was evaluated by kinetic studies upon measuring the percent transmittance (%T) at their maximum contrast point, indicating that the polymers exhibit moderate electrochromic performance.

Delay fluorescent compound and using the same and display device having the organic light-emitting diode (by machine translation)

The present invention provides a delay fluorescent compound and the use of the compound of the organic light-emitting diode and the display device, the delay fluorescent compound is a type 1 or type 2 delay fluorescent compound : [formula 1] ; [Formula 2] . (by machine translation)