Description

(11-Mercaptoundecyl)Trimethylammonium Bromide is a specialized cationic thiol compound, also known as a functionalized quaternary ammonium salt. This bifunctional molecule is valued for its ability to form self-assembled monolayers (SAMs) on gold and other metal surfaces, providing a stable, positively charged interface. It is essential for researchers and manufacturers in nanotechnology, surface science, and advanced materials development who require precise surface modification for applications ranging from biosensors to corrosion inhibition.

Application

• Surface Modification & Self-Assembled Monolayers (SAMs): Primary use for creating ordered, functionalized surfaces on gold, silver, and other substrates for research and device fabrication.
• Biosensor & Diagnostic Platforms: Acts as a linker molecule to immobilize biomolecules (e.g., DNA, proteins) onto electrode surfaces for electrochemical and optical sensing.
• Corrosion Inhibition: Forms protective layers on metal surfaces, particularly in specialized coatings and pretreatment formulations.
• Nanoparticle Functionalization: Used to cap and stabilize gold nanoparticles (AuNPs), imparting a positive charge and enabling further conjugation with negatively charged species.
• Antimicrobial Surface Coatings: Leverages the quaternary ammonium group to create surfaces with potential antimicrobial properties.
• Electronics & Microfabrication: Employed in the patterning and functionalization of surfaces for microelectromechanical systems (MEMS) and lab-on-a-chip devices.
• Chromatography & Separation Science: Can be used to modify stationary phases for specialized analytical separations.
• Fundamental Research: A key reagent in studies of interfacial chemistry, molecular electronics, and surface plasmon resonance (SPR).

Basic Information

Item	Detail
Product Name	(11-Mercaptoundecyl)Trimethylammonium Bromide
CAS No.	197587-43-2
Molecular Formula	C₁₄H₃₂BrNS
Molecular Weight	326.38 g/mol
Synonyms	11-Mercaptoundecyltrimethylammonium Bromide; N,N,N-Trimethyl-11-mercaptoundecylammonium Bromide; 11-(Trimethylammonio)undecyl Mercaptan Bromide; Thiolated Quaternary Ammonium Salt; C11-Thiol-QAS; Mercaptoundecyl TMA Bromide; SAM Agent for Gold Surfaces; Cationic Alkanethiol
EINECS	Contact for details

Quality Control

Our (11-Mercaptoundecyl)Trimethylammonium Bromide is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure consistency and reliability for sensitive research and development applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C under an inert atmosphere (e.g., nitrogen or argon) due to its sensitivity to moisture and oxidation. Allow the container to reach room temperature before opening to minimize condensation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details

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