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2,5-Bis(trimethylstannyl)thiophene - CAS: 86134-26-1

2026-07-21 16:21:53
Product Overview & Core Applications

2,5-Bis(trimethylstannyl)thiophene (commonly known as 2,5-Bis(trimethylstannyl)thiophene, CAS: 86134-26-1) is one of the most classic and indispensable electron-donating (Donor) core building blocks in the chemistry of organic electronics. It is explicitly categorized as an Organic Photovoltaic (OPV) Cell Intermediate Material.

2,5-Bis(trimethylstannyl)thiophene

Serving as a fundamental bifunctional organometallic monomer for constructing high-performance "Donor-Acceptor (D-A)" conjugated polymers and small molecules, it plays a decisive role across the following sectors:

  • Organic Photovoltaic (OPV) Intermediates: Acts as the most widely used distannylated donor unit in Stille cross-coupling polymerizations. It is the vital precursor for synthesizing renowned low-bandgap donor polymers (such as PTB7, PCE10, etc.) and advanced non-fullerene acceptors.

  • Organic Field-Effect Transistors (OFETs): Its rigid, unsubstituted thiophene core promotes tight, highly ordered intermolecular \(\pi \)-\(\pi \) stacking, which drastically boosts the charge carrier mobility of downstream thin-film transistors.

  • Flexible printed Electronics: Its exceptional structural regularity empowers resulting polymers with excellent processing rheology and electrical consistency in flexible circuits, organic light-emitting transistors (OLETs), and organic thermoelectric devices.

Because the synthesis of organotin monomers demands strict anhydrous/anaerobic conditions, cryogenic profiles, and involves highly toxic byproducts, high-vacuum refinement is notoriously difficult. Consequently, catalog retailers routinely offer it only in minor milligram/gram quantities at inflated rates. Utilizing our mature continuous organometallic production lines and advanced high-vacuum fractional distillation systems, we have broken through these limits. We proudly offer 99% ultra-high purity, polymerization-grade stock with a reliable, continuous monthly capacity of 1kg to secure your enterprise scale-up and commercial production pipeline.
Core Advantages

  • 99% Ultra-High Purity (Polymerization Grade): Refined via specialized, high-resolution purification. Monostannylated defects, unreacted thiophene, inorganic tin salts, and residual solvents are strictly restricted. This yields perfect bifunctional stoichiometry and absolute chemical cleanliness, guaranteeing consistent, high molecular weight (Mn/Mw) propagation in Stille polycondensations, which drastically enhances the power conversion efficiency (PCE) of downstream photovoltaic devices.

  • Stable Industrial Monthly Capacity (1kg/Month): We eliminate the market bottleneck of "unstable supply chains and minor catalog reagent constraints." Our standardized facilities guarantee a stable output of 1kg per month, supporting everything from bulk sampling to continuous commercial procurement.

  • Anaerobic & Light-Proof Protective Packaging: To counteract the sensitivity of organotin compounds to air, moisture, and light, our entire packaging cycle is executed inside ultra-dry, high-purity nitrogen-flushed gloveboxes. Vacuum-sealed, chemical-resistant fluorinated bottles with parafilm double-layer sealing guarantee zero quality degradation during long-term storage.

  • Rigorous Quality Control (QbD): Produced under rigid quality management structures. Every single dispatch is accompanied by a thorough testing booklet comprising a COA (Certificate of Analysis), GC/HPLC (Purity analysis), and H-NMR/Sn-NMR (Tin-119 NMR) charts to guarantee complete chemical and structural traceability.

Technical Specifications

  • Chemical Name: 2,5-Bis(trimethylstannyl)thiophene

  • CAS Registry Number: 86134-26-1

  • Functional Category: Organic Photovoltaic Cell Intermediate Material / Organic Semiconductor Building Block

  • Molecular Formula: C₁₀H₁₈SSn₂

  • Molecular Weight: 409.73

  • Appearance: Colorless to light-yellow clear liquid or low-melting solid/crystals.

  • Assay / Purity: ≥ 99.0% (GC/HPLC)

  • Storage Conditions: Store at 2-8°C, tightly sealed, nitrogen-blanketed, and strictly protected from light and moisture. Keep clear of strong oxidizing agents.

  • Production Capability: 1 kg / Month

  • Standard Packaging: 1g/bottle, 5g/bottle, 10g/bottle, 50g/bottle, 100g/specialized light-proof fluorinated container (Customized packaging available upon request).

Safety & Compliance Disclaimer
2,5-Bis(trimethylstannyl)thiophene is a highly toxic organotin compound capable of causing severe skin, eye, and respiratory irritation, along with systemic toxicity. Operating personnel must handle this material exclusively inside high-efficiency fume hoods or gloveboxes while wearing comprehensive personal protective equipment (such as chemical-resistant gloves, full-face respirators, and protective clothing). Hazardous waste disposal must strictly adhere to local regulatory codes for toxic chemicals. All chemical products sold by our company are intended solely for laboratory research, export, polymer or optoelectronic process engineering, or industrial manufacturing R&D. They are not intended for use as food additives, cosmetic raw materials, or clinical drugs in humans.


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