5-Hexenylmethyl Dichlorosilane丨CAS 90054-19-6

5-Hexenylmethyl dichlorosilane丨CAS 90054-19-6 is a specialized organosilicon compound featuring both vinyl reactivity (via its terminal alkene group) and reactive Si–Cl bonds. Its structure enables it to act as a key intermediate for modifying surfaces, synthesizing siloxane-based materials, and producing functional silanes used in a wide variety of high-performance applications.

Applications

1. Silane Coupling Agent Intermediate

5-Hexenylmethyl dichlorosilane is used as a precursor for silane coupling agents that improve bonding between organic polymers and inorganic substrates (e.g., glass, metal oxides, ceramics). It can be hydrolyzed and then condensed to form siloxane networks, or it can be reacted to introduce specific functional groups for adhesion or cross-linking.

Applications include:

Adhesion promoters in coatings, adhesives, and sealants

Interface modifiers for glass fibers in composites

2. Surface Functionalization and Treatment

The compound's reactive dichlorosilane moiety allows it to form monolayers or thin films on surfaces like:

Silicon wafers

Glass

Metal oxides

The terminal alkene group remains available for further chemical modification, enabling controlled surface patterning or grafting of polymers. This makes it useful in:

Microelectronics (e.g., wafer priming, photoresist adhesion)

Sensor technology

Nanomaterials research

3. Crosslinkable Silicone Elastomers and Polymers

Its alkene group can undergo hydrosilylation reactions with Si–H containing siloxanes to introduce cross-linkable sites into silicone materials. This enables:

Tailored silicone networks with controlled flexibility and strength

Advanced materials for medical, automotive, and aerospace uses

4. Intermediate for Functional Siloxanes

5-Hexenylmethyl dichlorosilane can be used to build functional siloxane polymers or oligomers that incorporate both:

Hydrolyzable silane units for network formation

Alkene-functional groups for post-polymerization modification

Such siloxanes are used in:

Smart coatings

Drug delivery systems

Responsive gels

5. Research and Material Development

In academic and industrial research, it is used to design tailored silane linkers and polymeric materials. It provides a strategic entry point to introduce reactive alkenes into silicon-based structures.

Benefits

1. Dual Reactivity

5-Hexenylmethyl dichlorosilane丨CAS 90054-19-6 uniquely combines:

Highly reactive Si–Cl bonds (for attachment to substrates or hydrolysis)

A terminal alkene (for further chemical reactions such as hydrosilylation or thiol-ene reactions)

This dual reactivity makes it a powerful molecular tool in synthetic and materials chemistry.

2. Controlled Surface Chemistry

It allows chemists to precisely engineer surface functionality, enabling selective modification at the nano or micro scale. This is especially valuable in:

MEMS/NEMS devices

Bio-interface design

Optical coatings

3. Polymer Compatibility

The alkene group provides compatibility with many types of polymerization reactions, including:

Free radical polymerization

Thiol-ene click chemistry

This makes it possible to incorporate the silane into a wide range of functional and hybrid polymer systems.

4. Versatile Precursor

It can be converted into many other valuable silane derivatives (e.g., silanols, siloxanes, trialkoxysilanes), offering flexibility in synthetic design and applications.

5. Enhances Performance of End Products

Use of 5-hexenylmethyl dichlorosilane in materials or coatings often improves:

Durability

Adhesion to substrates

Chemical resistance

Tunable reactivity or functionalization capacity

Conclusion

5-Hexenylmethyl dichlorosilane丨CAS 90054-19-6 is a multifunctional organosilane used in a wide range of industrial and research applications due to its dual reactivity (Si–Cl and terminal alkene). Whether used as a surface treatment agent, polymer intermediate, or silane coupling agent precursor, it provides unmatched versatility in materials science, coatings, and functional interface chemistry.