1,4-Bis(dimethylsilyl)benzene

1,4-Bis(dimethylsilyl)benzene is a high-purity silicon-compounds supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.

1,4-Bis(dimethylsilyl)benzene is a specialty organosilicon compound featuring both aromatic and silyl functionalities. It serves as a key intermediate, crosslinker, or monomer in several fields, including materials science, polymer chemistry, and electronics.

1. Precursor for Crosslinked Polysilanes and Siloxanes

The two reactive Si–H bonds allow this compound to undergo hydrosilylation, dehydrocoupling, or oxidative crosslinking:

Used to form siloxane or polysilane networks, especially in:

Silicone elastomers

Thermoset resins

Hybrid organic-inorganic materials

Because the dimethylsilyl groups are at para-positions, the resulting materials tend to have a linear or symmetrical architecture, contributing to uniform physical properties.

2. Building Block for Functional Polymers

1,4-Bis(dimethylsilyl)benzene is incorporated into high-performance polymers, such as:

Polysilanes with extended π-conjugation

Polysiloxanes for flexible and thermally stable materials

Silicon-containing block copolymers

These polymers are used in:

Dielectric materials

Optical coatings

Flexible electronics

3. Precursor in Hydrosilylation Chemistry

Each Si–H bond can react with unsaturated compounds (e.g., alkenes, alkynes, or vinyls) in hydrosilylation reactions, typically catalyzed by platinum or rhodium complexes. This enables:

Functionalization of polymer chains

End-capping or crosslinking of silicone polymers

Synthesis of tailored organosilicon molecules for surface modification or adhesion promoters

4. Intermediate in Synthesis of Aromatic-Silicon Hybrids

This compound is useful for introducing silicon centers directly onto aromatic cores, enabling:

Design of new hybrid materials combining organic and inorganic functionality

Improved thermal and oxidative stability

Enhanced mechanical properties for coatings and adhesives

These structures are attractive in microelectronics and aerospace-grade materials.

5. Use in Nanostructured and Porous Materials

When used in sol–gel or templated synthesis, 1,4-bis(dimethylsilyl)benzene acts as a bridging precursor for:

Organosilica frameworks (e.g., PMOs – periodic mesoporous organosilicas)

Porous hybrid materials for separation, catalysis, or sensing

The aromatic core contributes rigidity, while the silyl groups allow crosslinking or co-condensation with other silanes like TEOS or TMOS.

1,4-Bis(dimethylsilyl)benzene offers a combination of structural versatility, reactivity, and performance-enhancing features that make it valuable across a range of advanced material applications.

1. Dual Silyl Reactivity

Contains two Si–H bonds, allowing for:

Symmetrical bifunctional crosslinking

Double hydrosilylation

Controlled network architecture

This makes it ideal for network polymer design, whether linear, star-shaped, or crosslinked.

2. Aromatic Rigidity with Silicon Flexibility

The benzene ring provides rigidity and stability

The dimethylsilyl groups provide reactivity and compatibility with flexible polymers

The balance of structural order and processability makes it suited for:

Functional coatings

Optical materials

Tough yet flexible elastomers

3. Thermally and Chemically Stable

Organosilicon materials based on this compound tend to exhibit:

High thermal resistance

Low flammability

Excellent weathering and UV resistance

These properties are crucial in high-performance electronics, automotive components, and aerospace materials.

4. Compatibility with Diverse Chemistries

Can be used in:

Platinum-catalyzed hydrosilylation

Radical-mediated processes

Dehydrogenative coupling

Compatible with a wide range of unsaturated or nucleophilic species

This broad compatibility allows fine-tuning of material properties and modular design of hybrid systems.

5. Useful in High-Purity and Low-Outgassing Applications

Organosilanes with defined aromatic cores like 1,4-bis(dimethylsilyl)benzene are often selected for:

Low volatility and low extractables

Stable dielectric and optical properties

Suitability for cleanroom or semiconductor-grade formulations

1,4-Bis(dimethylsilyl)benzene (CAS 2488-01-9) is a specialty bifunctional organosilane that serves as a key intermediate and crosslinker in advanced materials. Its unique combination of aromatic rigidity and silicon-based reactivity makes it essential in the development of:

Polysiloxanes and polysilanes

Crosslinked silicone networks

Hybrid inorganic-organic materials

Hydrosilylation-based modifications

Its utility in fields ranging from polymer science to electronics and aerospace underscores its value as a highly functional and adaptable building block.

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