Octadecanethiol丨CAS 2885-00-9

Octadecanethiol, with the Chemical Abstracts Service (CAS) number 2885-00-9, is a long-chain alkanethiol. It is an organic compound consisting of an 18-carbon alkyl chain with a thiol (-SH) functional group at one end. Octadecanethiol丨2885-00-9 is widely used in surface chemistry, nanotechnology, and materials science due to its ability to form self-assembled monolayers (SAMs) on metal surfaces, particularly gold.

1. Self-Assembled Monolayers (SAMs):

- Octadecanethiol is commonly used to create SAMs on gold, silver, and other metal surfaces. These monolayers are highly ordered and provide a stable, hydrophobic surface.

- SAMs of octadecanethiol are used in surface modification, biosensors, and molecular electronics due to their ability to control surface properties at the nanoscale.

2. Nanotechnology:

- In nanotechnology, octadecanethiol is used to functionalize nanoparticles, such as gold nanoparticles, to stabilize them and prevent aggregation. This is critical for applications in drug delivery, imaging, and catalysis.

- It is also used to pattern surfaces at the nanoscale for the fabrication of microelectromechanical systems (MEMS) and other nanodevices.

3. Surface Chemistry and Coatings:

- Octadecanethiol is used to modify the wettability and adhesion properties of surfaces. For example, it can create hydrophobic coatings on metals, which are useful in corrosion prevention and anti-fouling applications.

- It is also employed in the study of friction and lubrication at the molecular level.

4. Biosensors and Diagnostics:

- The ability of Octadecanethiol丨2885-00-9 to form SAMs on gold surfaces makes it valuable in the development of biosensors. These SAMs can be functionalized with biomolecules (e.g., antibodies or DNA) for detecting specific analytes.

- It is used in surface plasmon resonance (SPR) and other sensing technologies.

5. Research and Development:

- Octadecanethiol is widely used in academic and industrial research to study surface interactions, molecular self-assembly, and the behavior of organic molecules on solid substrates.

1. Precision in Surface Modification:

- Octadecanethiol allows for precise control over surface properties, enabling the creation of tailored surfaces for specific applications.

2. Stability and Durability:

- SAMs formed by octadecanethiol are highly stable and resistant to degradation, making them suitable for long-term applications.

3. Versatility:

- Its ability to form SAMs on various metals and its compatibility with other functional groups make octadecanethiol a versatile tool in surface chemistry and nanotechnology.

4. Nanoparticle Stabilization:

- Octadecanethiol丨2885-00-9 is effective in stabilizing nanoparticles, which is essential for their use in biomedical and industrial applications.

5. Cost-Effectiveness:

- As a commercially available chemical, octadecanethiol is relatively affordable, making it accessible for research and industrial use.

Octadecanethiol丨2885-00-9 is a key compound in surface chemistry and nanotechnology, with applications ranging from the creation of self-assembled monolayers to the stabilization of nanoparticles. Its ability to modify surface properties with high precision and stability makes it an invaluable tool in research, diagnostics, and materials science. As nanotechnology and surface engineering continue to advance, octadecanethiol will remain a critical component in the development of innovative technologies.