1-Octanethiol

1-Octanethiol (OT), also known as 1-mercaptooctane, is a high-reactivity linear alkanethiol optimized for the formation of highly ordered Self-Assembled Monolayers (SAMs) on noble metals and semiconductors.
The alkyl chain provides a balance of sufficient hydrophobic shielding to protect underlying circuits from moisture while remaining thin enough to allow for efficient tunneling-based electron transport, a key requirement for molecular electronics.
Due to its low vapor pressure and precise chemical structure, this grade is preferred for cleanroom processes involving vacuum deposition or liquid-phase assembly on micro-electrode arrays. Its ability to create reproducible, uniform molecular layers makes it a standard for fine-tuning surface wetting and adhesion properties in nanofabrication.
Refined to a ≥ 98.5% high-purity specification, this grade ensures the elimination of trace impurities that could lead to lattice defects in the SAM, providing the consistency necessary for high-performance biosensors and nanoelectronic components.

As a versatile linear alkanethiol, 1-Octanethiol is a foundational reagent for creating high-density molecular interfaces in sensing and organic electronic devices.
Nanoelectronic Electrode Engineering: Extensively used to improve charge injection in Thin-Film Transistors (TFTs). By forming a Self-Assembled Monolayer (SAM) on gold source-drain electrodes, it tunes the metal work function and reduces contact resistance, which is critical for bottom-contact device architectures.
Single-Molecule Electronics: Serves as a benchmark molecule for studying electron transport at the nanometer scale. It is utilized to construct single-molecule switches and transistors where conductance can be mechanically or electrically gated.
Precision Biosensing Platforms: Functions as a stabilizing and orienting interphase on gold surfaces for enzyme immobilization (e.g., glucose oxidase). Its hydrophobic chain facilitates the creation of robust "enzyme electrodes" used in point-of-care medical diagnostics.
Quantum Dot & Photovoltaic Enhancement: Acts as a sulfur precursor and ligand for CdSe/CdS quantum dots, improving the power efficiency of nanorod-sensitized solar cells by enhancing electron extraction at the interface.
Nanomaterial Surface Passivation: Used to stabilize copper and gold nanoparticles in colloidal dispersions, preventing oxidation and allowing for their integration into printable conductive inks and optical sensors.

Product of Arkema Inc.