18733-91-0

Usage

Uses

Used in Silicone Polymer and Elastomer Production:
Bis(4-bromophenyl)-diphenyl-silane is utilized as a crosslinking agent, which is crucial for enhancing the mechanical properties and durability of silicone polymers and elastomers. Its ability to form stable crosslinks contributes to the improved performance of these materials in various applications.
Used in Organic Material and Coating Synthesis:
bis(4-bromophenyl)-diphenyl-silane serves as a key intermediate in the synthesis of organic materials and coatings, where its unique structure and properties can be leveraged to create novel materials with tailored characteristics. The crosslinking ability of bis(4-bromophenyl)-diphenyl-silane can improve the durability and performance of these coatings.
Used in Composite Material Manufacturing:
Bis(4-bromophenyl)-diphenyl-silane is employed as a coupling agent in the production of composite materials, facilitating strong interfacial bonding between the matrix and the reinforcing materials. This enhances the overall mechanical properties and performance of the composites in various industries.
Used in High-Temperature and Oxidation-Resistant Applications:
Due to its high thermal stability and resistance to oxidation, bis(4-bromophenyl)-diphenyl-silane is suitable for use in applications that require materials to withstand extreme temperatures and oxidative environments. This makes it valuable in industries such as aerospace, automotive, and electronics, where materials are subjected to harsh conditions.
It is important to handle bis(4-bromophenyl)-diphenyl-silane with care, as it may pose hazards to health and the environment if not used properly. Proper safety measures and disposal methods should be followed to minimize any potential risks associated with its use.

InChI:InChI=1/C24H18Br2Si/c25-19-11-15-23(16-12-19)27(21-7-3-1-4-8-21,22-9-5-2-6-10-22)24-17-13-20(26)14-18-24/h1-18H

Upstream product

• 106-37-6 1.4-dibromobenzene 
• 775-12-2 diphenylsilane 
• 80-10-4 diphenylsilyl dichloride 

Downstream Products

• 431070-74-5 4-[(4-bromophenyl)diphenylsilyl]phenylacetylene 
• 948584-98-3 C₄₀H₃₀BrNSi 
• 934466-43-0 di(p-(dimesitylboryl)phenyl)diphenylsilane 
• 1325242-86-1 ((CH₃)3C₆H₂)2BC₆H₄Si(C₆H₅)2C₆H₄C₅H₄N 
• 934466-45-2 [(diphenylsilanediyl)bis(4,1-phenylene)]bis(diphenylphosphine)dioxide 

Relevant academic research and scientific papers

Conjugation-broken thiophene-based electropolymerized polymers with well-defined structures: effect of conjugation lengths on electrochromic properties

A series of monomers containing tetraphenylsilane connected to different thiophenes such as thiophene, bithiophene and terthiophene were designed and synthesized and were further used to prepare the corresponding polymers via electrochemical polymerization (pSiTPTP, pSiTPBTP and pSiTPTTP). From the polymers, the effective conjugate elements were well defined as bithiophene, quaterthiophene and sexithiophene because the sp3 Si atom can block the conjugation between the thiophene units in the polymer backbone. The spectroelectrochemical results indicated that pSiTPTP is incapable of electrochromism, which may be attributed to the insufficient conjugation length of the independent bithiophene. In contrast, both pSiTPBTP and pSiTPTTP exhibited obvious electrochromic properties and furthermore, pSiTPTTP displayed a shorter switching time and better stability. Such different electrochemical behaviors can be ascribed to the looser stacking structure and lower oxidation potential of pSiTPTTP with the independent sexithiophene unit. The EIS measurements also confirmed the lower charge-transfer resistance and higher ion-diffusion rate of pSiTPTTP with the independent sexithiophene unit. Hence, we can conclude that the effects of the electrochromic behavior of the conjugation-broken polythiophene derivatives depend on the increased conjugation length of the thiophene repeating unit, in which the inadequate electrochromism with bithiophene units can change to superior electrochromic properties with increased sexithiophene units.

Highly efficient green phosphorescent organic light-emitting diodes based on tetraphenyl silicon derivative host materials

We report herein two novel tetraphenyl silicon derivatives, bis(4-(dibenzo[b,d]thiophen-4-yl)phenyl)diphenylsilane (DBTSiDBT) and bis(4- (dibenzo[b,d]furan-4-yl)phenyl)diphenylsilane (DBFSiDBF) achieved by coupling dibenzothiophene (DBT) and dibenzofuran (DBF) moieties with bis(4-bromophenyl)diphenylsilane. These two compounds show high triplet energy states, high glass transition temperature (Tg) and high decomposition temperature (Td). Therefore, they can serve as hosts in organic light-emitting diodes. Consequently, (2-phenylpyridine) iridium(III) (Ir(ppy)3) based phosphorescence organic light-emitting diodes (PHOLEDs) with green emission were studied with DBTSiDBT and DBFSiDBF as host materials. The champion external quantum efficiency (EQE) and maximum luminance of the devices were 24.5% and over 27000 cd/m2 respectively.

Iridium complex grafted to 3,6-carbazole-alt-tetraphenylsilane copolymers for blue electrophosphorescence

We designed a 3,6-dibromo-9-hexyl-9H-carbazole derivative with the blue emissive iridium complex bis[2-(4,6-difluorophenyl)pyridyl-N,C 2′](picolinato)iridium(III) (Flrpic) linked at the alkyl terminal. Based on this monomer, novel 3,6-carbazole-alt-tetraphenylsilane copolymers grafted with Flrpic were synthesized by palladium-catalyzed Suzuki coupling reaction, and the content of Flrpic in the polymers could be controlled by feed ratio of the monomers. The polymer films mainly show blue emission from Flrpic, and the emission intensity from the polymer backbones is much weaker compared with the doped analogues, which demonstrates an efficient energy transfer from polymeric host to covalently bonded guest. The phase separation in the polymers was suppressed, which can be identified by atomic force microscopy and designed electroluminescent (EL) devices. EL devices based on the polymers exhibited blue phosphorescence from Flrpic. The luminous efficiency of preliminary devices reached 2.3 cd/A, and the efficiency roll-off at high current densities was suppressed.

PL sensor for sensitive and selective detection of 2,4,6-trinitrophenol based on carbazole and tetraphenylsilane polymer

A sensitive and selective detection of 2,4,6-trinitrophenol (TNP) is of great importance for the national security and pollution control. Herein, we report a novel 2,7-carbazole and tetraphenylsilane based polymer PCzSi, and applied it for nitroaromatics sensing. PCzSi shows a deep-blue photoluminescence (PL) emission peaking at 410 nm with a high glass transition temperature and good thermal stability. During the PL titration experiments, the polymer exhibited an obvious PL quenching phenomenon, with different extent towards different nitroaromatic analytes. Remarkably, a selective detection of TNP was realized using our polymer sensor, and the KSV value towards TNP is two orders of magnitude higher than 2,4,6-trinitrotoluene (TNT) and 1,3,5-trinitrobenzene (TNB). The sensing mechanism was further discussed to clarify the selectivity towards TNP based on the analysis of UV–vis absorption, excitation and PL spectra and cyclic voltammogram results. In addition, the paper strips were fabricated to detect both TNP solution and vapor, which demonstrates a good potential of our polymer for practical and on-site application as a solid PL sensor of TNP.

Silicon-based compound and organic light emitting diode comprising the same

A silicon compound and an organic light emitting device including the same are. disclosed. (by machine translation)

Dibenzothiophene, dibenzofuran and pyridine substituted tetraphenyl silicon derivatives hosts for green phosphorescent organic light-emitting diodes

We report the application of four novel tetraphenyl silicon derivatives as host materials in phosphorescent organic light-emitting diodes (PHOLEDs). The novel derivatives are; 3-(4-((4-(dibenzo[b,d]thiophen-4-yl)phenyl)diphenylsilyl)- phenyl)pyridine (DBTSiPy3), 4-(4- ((4-(dibenzo[b,d]thiophen-4-yl)phenyl)diphenyl- silyl)phenyl)pyridine (DBTSiPy4), 3-(4-((4-(dibenzo[b,d]furan-4-yl)phenyl)- diphenylsilyl)phenyl)pyridine (DBFSiPy3) and 4-(4-((4-(dibenzo[b,d]furan-4- yl)phenyl)diphenylsilyl)phenyl)pyridine (DBFSiPy4). They were prepared by the introduction dibenzothiophene (DBT)/dibenzofuran (DBF) and pyridine units into bis(4-bromophenyl)diphenylsilane intermediate. The influences of DBT/DBF and the position of nitrogen atom within the pyridine unit (3- vs 4-position) were studied by theoretical calculations and experimental measurements. To evaluate the electroluminescent (EL) performance of these four materials, (2-phenylpyridine) iridium(III) (Ir(ppy)3) based green PHOLEDs were fabricated using the common device structures. DBF substituted materials (DBFSiPy3 and DBFSiPy4) led to efficient green PHOLEDs with notable external quantum efficiencies (EQE) of 22.9% and 21.9% respectively.

Interruption conjugation-based donor/acceptor type intramolecular exciplex light-emitting material and application thereof in preparation of organic light-emitting diode device

The invention discloses preparation of an interruption conjugation-based donor/acceptor type intramolecular exciplex light-emitting material and application thereof in preparation of an Organic Light-Emitting Diode (OLEDs) Device, and belongs to the technical field of organic electroluminescence. Specifically, sp3-hybridized atoms such as C, O, S and Si are used as bridging groups for interruptionconjugation; a donor and an acceptor are connected in an interruption conjugation manner; moreover, a proper donor and a proper acceptor are selected; a charge transfer excited state between the donor and the acceptor is adjusted as a lowest excited state of the whole molecule. Therefore, a hole wave function of a formed exciton is locally defined on the donor, and an electron wave function is locally defined on the acceptor; the hole and electron wave functions are completely separated in space. Therefore, the formed exciton is low in binding energy and favorable for spin flip of excited electrons, and has a reversed intersystem crossing from a triplet state to a singlet state to realize effective utilization of the triplet state by a fluorescent material. Through reasonable donor and acceptor cooperation, the interruption conjugation-based donor/acceptor type intramolecular exciplex light-emitting material also can realize red, green and blue full-color light emission.

ORGANIC ELECTROLUMINESCENT MATERIALS CONTAINING CARBOLINE GROUP AND ORGANIC ELECTROLUMINESCENT DEVICE BY USING THE SAME

An organic electroluminescent material is shown in General Formula (1), wherein R3 is a carboline group, R13 is a carbazole group or a carboline group, R1 to R2, R4 to R12 and R14 to R20 are each independently selected from the group consisting of a hydrogen atom, a fluorine atom, a cyano group, an alkyl group, a cycloalkyl group, an alkoxy group, a haloalkyl group, a thioalkyl group, a silyl group and an alkenyl group.

Silylated oligomeric poly(ether-azomethine)s from monomers containing biphenyl moieties: Synthesis and characterization

In this study, four new silicon-containing poly(ether-azomethine)s with linear structures were prepared using original silicon and biphenyl moiety-containing monomers: two diamines and two dialdehydes. The oligomeric natures of the samples were established by GPC analysis, which showed chains containing 3 to 5 repetitive units. The monomers and the oligomeric samples were structurally characterized by NMR and FT-IR spectroscopy. The solubilities of the samples in common organic solvents and their thermal behavior enable improvement of their industrial and technological processability. The optical band gaps of the oligomeric samples were estimated from optical measurements (UV-vis), and their electrical behavior in films was determined using the four-point method. The surface arrangements and morphological characteristics of the films were determined via atomic force microscopy measurements. The roughness, area increase percentage and layer stiffness of the films were also measured using this technique.

Silicon-phenyl-bithiophene derivatives and preparation method and application thereof

The invention provides silicon-phenyl-bithiophene derivatives, a preparation method thereof and application of the silicon-phenyl-bithiophene derivatives as a monomer in preparation of an electrochromic material thin film through electrochemical polymerization. The silicon-phenyl-bithiophene derivatives are shown in a formula 1. A kind of silicon-phenyl-bithiophene derivatives are synthesized witha high yield of 60%, the thin film prepared through electrochemical polymerization by using the silicon-phenyl-bithiophene derivatives as the monomer exhibits a certain response speed and reasonableoptical contrast, and a potential application value is achieved in the field of electrochromism.