149703-84-4

Basic information

• Product Name: 2,5-Dibromo-3-octylthiophene
• Synonyms: 2,5-DIBROMO-3-OCTYLTHIOPHENE;4-FLUORO-2-TRIFLUOROMETHYLPHENYL ISOTHIO;2,5-DibroMo-3-n-octylthiophene;DibroMo-3-octylthioph
• CAS NO: 149703-84-4
• Molecular Formula: C₁₂H₁₈Br₂S
• Molecular Weight: 354.14
• Product Categories: Thiophenes;Thiophen;Organic Electronics and Photonics;Synthetic Tools and Reagents;Thiophene Monomers and Building Blocks;Thiophene Series
• Mol File: 149703-84-4.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 316 °C(lit.)
• Flash Point: 230 °F
• Appearance: /
• Density: 1.44 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.000101mmHg at 25°C
• Refractive Index: n20/D 1.548(lit.)
• Storage Temp.: 2-8°C
• Water Solubility: Slightly soluble in water.
• CAS DataBase Reference: 2,5-Dibromo-3-octylthiophene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-Dibromo-3-octylthiophene(149703-84-4)
• EPA Substance Registry System: 2,5-Dibromo-3-octylthiophene(149703-84-4)

Safety Data

• Safety Statements: 24/25
• WGK Germany: 3
• Hazardous Substances Data: 149703-84-4(Hazardous Substances Data)

Usage

Uses

It is a conducting polymer precursor.

InChI:InChI=1/C12H18Br2S/c1-2-3-4-5-6-7-8-10-9-11(13)15-12(10)14/h9H,2-8H2,1H3

Upstream product

• 65016-62-8 3-octylthiophene 

Downstream Products

• 1067186-01-9 C₅₄H₄₆N₆S 
• 1257318-75-4 C₄₄H₆₀O₂S₃Si₂ 
• 65016-62-8 3-octylthiophene 

Relevant articles and documents

Synthesis and optical properties of (thienylene)-[1,6-dithienylhexa-1,3,5-trienylene] copolymers

Two [thiophene-1,6-dithienylhexa-1,3,5-triene] copolymers were prepared by a palladium catalysed coupling reaction of a dibromothiophene derivative and a bis(tributylstannyl) derivative of a 1,6-dithienylhexa-1,3,5-triene unit. The electrochromism and the photoluminescence properties of the highly conjugated polymers were studied. In the solid state the polymers have strong photoluminescence bands at 2.0 eV for 9 and 1.95 eV for 8. Polymer 8 seems particularly promising for use as a red-light emitting diode, and the two polymers 8 and 9 exhibit red-pale blue electrochromism that makes them suitable for fabricating new devices.

Tuning the Solid State Emission of Thin Films/Microspheres Obtained from Alternating Oligo(3-octylthiophenes) and 2,6-Bis(pyrazole)pyridine Copolymers by Varying Conjugation Length and Eu3+/Tb3+ Metal Coordination

A series of dialkynyl-functionalized oligo(3-octylthiophene)m (m = 1-7 and 9, where m is the number of thiophene units) were polymerized together with 2,6-bis(pyrazole)pyridine (BPP) to get alternating copolymers (P1-P7 and P9) with the number-average molecular weights (Mn) in the range of 5.3-11 kDa. These copolymers were further self-assembled into solid microspheres. The optical emission range of these copolymers were fine-tuned from blue to red and white by changing the conjugation length of thiophene oligomers (band gap approximately from 2.1 to 1.67 eV) and coordination of metals like Eu3+ and Tb3+ in both the solution and solid states. A white color was obtained in solution, thin film, and microsphere states with CIE (Commission Internationale de l'Eclairage) coordinates close to the values of standard white color.

Multifunctional materials consisting of regioregular poly(3-alkylthiophene)s covalently attached on carbon nanotubes for photovoltaic applications

Facile ways towards the integration of the regioregular poly(3-alkylthiophene)s onto carbon nanotubes, providing multifunctional materials that combine the extraordinary properties of the carbon nanotubes with those of regioregular poly(3-alkylthiophene)s, are presented.