Description

2,7-Bis(Trimethylstannyl)-Benzo[1,2-B:4,5-B]Bis(4,4'-Dioctyl-4H-Silolo[3,2-B]Thiophene) is a high-purity organotin-functionalized fused-ring electron donor monomer, critical for synthesizing advanced semiconducting polymers. Its value lies in enabling precise molecular engineering for high-performance organic electronic materials with superior charge carrier mobility and tunable energy levels. This compound is essential for R&D and production teams in the organic electronics, photovoltaics, and advanced materials sectors seeking to develop next-generation organic field-effect transistors (OFETs) and polymer solar cells.

Application

• Organic Semiconductor Synthesis: Key monomer for the preparation of donor-acceptor (D-A) conjugated polymers via Stille polycondensation.
• Organic Photovoltaics (OPVs): Used in the development of high-efficiency polymer donor materials for bulk-heterojunction solar cells.
• Organic Field-Effect Transistors (OFETs): Building block for p-type and ambipolar semiconducting polymers with enhanced charge transport properties.
• Perovskite Solar Cells: Employed in the synthesis of hole-transport materials (HTMs) and interfacial layers.
• Advanced Material Research: Serves as a precursor for novel low-bandgap polymers and copolymers in academic and industrial R&D.
• Printed Electronics: Enables the formulation of solution-processable conductive inks for flexible and wearable electronics.

Basic Information

Product Name	2,7-Bis(Trimethylstannyl)-Benzo[1,2-B:4,5-B]Bis(4,4'-Dioctyl-4H-Silolo[3,2-B]Thiophene)
CAS No.	1569453-45-7
Molecular Formula	C58H90S2Si2Sn2
Molecular Weight	1159.06 g/mol
Synonyms	Benzo[1,2-b:4,5-b']bis(4,4'-dioctyl-4H-silolo[3,2-b]thiophene-2,7-diyl)bis(trimethylstannane); 2,7-Bis(trimethylstannyl)dithienosilole-fused benzodithiophene derivative; BDT(TMSn)2 silole copolymer precursor; Dithieno[3,2-b:2',3'-d]silole-fused BDT monomer; Organotin monomer for D-A polymers; Stannylated silolo-benzodithiophene donor; TMSn-BDT(TMSn)-TMSn monomer; CAS 1569453-45-7
EINECS	Contact for details

Quality Control

Every batch of our 2,7-Bis(Trimethylstannyl)-Benzo[1,2-B:4,5-B]Bis(4,4'-Dioctyl-4H-Silolo[3,2-B]Thiophene) is synthesized and purified under stringent inert atmosphere conditions to prevent oxidation. We employ advanced analytical techniques including NMR (1H, 13C, 119Sn), HPLC, and Elemental Analysis to verify structural integrity and high purity, typically >98% (by HPLC). Certificates of Analysis (COA) with full characterization data are provided with each shipment to ensure traceability and compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (argon or nitrogen) at 2-8°C in a freezer. This compound is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Allow the sealed container to equilibrate to room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Yellow to orange solid
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Tin Content	20.5 ± 0.5%
Residual Solvents (GC)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.