1089687-05-7

Basic information

• Product Name: 2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene
• Synonyms: 2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene;2,6‐dibroMo‐(4,4‐di‐2‐ ethylhexyldithieno[ 3,2‐b:2',3'‐ d]silole;4,4'-Bis(2-ethyl-hexyl)-5,5'-dibroMo-dithieno[3,2-b:2',3'-d]silole;4H-Silolo[3,2-b:4,5-b']dithiophene, 2,6-dibroMo-4,4-bis(2-ethylhexyl)-;2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b
• CAS NO: 1089687-05-7
• Molecular Formula: C24H36Br2S2Si
• Molecular Weight: 576.56614
• EINECS: 200-258-5
• Product Categories: OPV,OLED
• Mol File: 1089687-05-7.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 551.3±50.0 °C(Predicted)
• Appearance: /
• Density: 1.32
• Storage Temp.: under inert gas (nitrogen or Argon) at 2–8 °C
• CAS DataBase Reference: 2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene(1089687-05-7)
• EPA Substance Registry System: 2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene(1089687-05-7)

Safety Data

• Hazardous Substances Data: 1089687-05-7(Hazardous Substances Data)

Usage

General Description

2,6-Dibromo-4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene is a chemical compound commonly used in the fabrication of organic electronics and photovoltaic devices. It belongs to the family of dithiophene-based semiconducting materials and is known for its high electron mobility and good stability in air. This chemical has been utilized in the development of organic solar cells and field-effect transistors due to its favorable optoelectronic properties. It exhibits strong absorption in the visible region of the electromagnetic spectrum, making it suitable for use in photovoltaic applications. Additionally, its conjugated structure and high solubility in common organic solvents make it an attractive choice for organic electronics research and development.

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Downstream Products

• 1089687-06-8 2,2′-bistrimethylstannyl-4,4′-bis-(2-ethylhexyl)dithieno[3,2-b:2′,3′-d]silole 

Relevant articles and documents

Synthesis and photophysical properties of semiconductor molecules D1-A-D2-A-D1-type structure based on derivatives of quinoxaline and dithienosilole for organics solar cells

A novel small molecule with D1-A-D2-A-D1 structure denoted as DTS(QxHT2)2 based on quinoxaline acceptor and dithienosilone donor units was synthesized and its optical and electrochemical properties were investigated. The thin film of DTS(QxHT2)2 showed a broad absorption profile covering the solar spectrum from 350?nm to 780?nm with an optical bandgap of 1.63?eV. The energy levels estimated from the cyclic voltammetry indicate that this small molecule is suitable as donor along with PC71BM as acceptor for the fabrication solution processed bulk heterojunction solar cells for efficient exciton dissociation and high open circuit voltage. The organic solar cells based on optimized DTS(QxHT2)2:PC71BM active layers processed with chloroform and DIO/CF showed overall power conversion efficiency of 3.16% and 6.30%, respectively. The higher power conversion efficiency of the solar cell based on the DIO/CF processed active layer is attributed to enhanced short circuit photocurrent and fill factor may be related to better phase separation between donor and acceptor in the active layer and more balanced charge transport, induced by the solvent additive. The power conversion efficiency of the organic solar cell was further improved up to 7.81% based on active layer processed with solvent additive, using CuSCN as hole transport layer instead of PEDOT:PSS and mainly attributed to increased fill factor and open circuit voltage due the formation of better Ohmic contact between the active layer and the CuSCN layer.

Low band gap dithieno[3,2-b:2′,3′-d]silole-containing polymers, synthesis, characterization and photovoltaic application

A series of low band gap silole-containing polymers were synthesized with different alkyl side chains and a power conversion efficiency (PCE) of 3.43% was obtained.

The end-capped group effect on dithienosilole trimer based small molecules for efficient organic photovoltaics

Three new small molecules, FBT-tDTS, DFBT-tDTS and RHO-tDTS, were designed and synthesized by using a rigid dithienosilole trimer (tDTS) as the novel donor unit and 5-fluorobenzothiadiazole (FBT), 5,6-difluorobenzothiadiazole (DFBT) and 3-ethylrhodanine (RHO) as acceptor units, respectively. According to the density functional theory calculations, RHO-tDTS has a more rigid structure due to the linkage between the donor and acceptor units. As a result, RHO-tDTS exhibits a red-shifted absorption spectrum and a higher hole mobility in comparison with FBT-tDTS and DFBT-tDTS. Small molecule solar cells based on RHO-tDTS show a power conversion efficiency of 7.56%, significantly performing better than the other two analogues. The mechanism of the good photovoltaic performance of RHO-tDTS was discussed. We also demonstrated that the end-capped groups on small molecules play an important role in tuning the performance of the organic photovoltaic devices.