2,2′-(Ethylenedioxy)diethanethiol

2,2′-(Ethylenedioxy)diethanethiol (EDT) is a versatile organosulfur reagent engineered for the high-precision functionalization of inorganic and organic surfaces.
Its unique structure, containing a hydrophilic ethylene-dioxy bridge flanked by terminal sulfhydryl (-SH) handles, ensures superior solubility and denser surface grafting compared to traditional alkanedithiols. This makes it an ideal candidate for forming stable Self-Assembled Monolayers (SAMs) on gold and other noble metal substrates used in nanoelectronics.
Unlike common short-chain thiols, this grade is characterized by its non-volatile nature and reduced odor, which facilitates its use in delicate cleanroom environments and large-scale biosensor fabrication.
Refined to a 95% high-purity specification, this grade provides the consistent electronic and chemical properties required for applications in molecular switches, field-effect transistors (FETs), and point-of-care diagnostic devices.

As a high-performance dithiol linker, EDT is essential for engineering bio-electronic interfaces and advanced sensing systems that require precise charge transport and molecular alignment.
Electrochemical Biosensing: Used in the synthesis of high-stability bioanodes for enzymatic fuel cells (e.g., glucose sensing). Its ethylene-dioxy spacer provides the necessary flexibility for optimal enzyme immobilization on gold electrodes while maintaining efficient electron transfer.
Smart Responsive Systems: Integrated into 4D-printed, redox-responsive polymer networks. When incorporated into copolymer resins, EDT allows for reversible, [H2O2]-dependent swelling, enabling the creation of "smart" needle-type biosensors for real-time monitoring of brain metabolites.
Nanoelectronic Conductors: Functions as a critical donor molecule in the synthesis of rare-earth molecular conductors. Salts formed with EDT can exhibit high metallic conductivity (e.g., down to 100 K), making it a candidate for molecular-scale circuitry and semiconducting organic electronic components. Nanomaterial Surface Tuning: Acts as a specialized ligand to passivate and tune the optical and electronic properties of gold nanoclusters (AuNCs). This enhances their stability and quantum yield for high-sensitivity diagnostic imaging.
Flexible Bio-Interfaces: Utilized in the development of soft, stimuli-sensitive polymer substrates for neural interfaces. These EDT-based substrates can drop in modulus by two orders of magnitude in physiological conditions, ensuring mechanical compatibility with soft nervous tissue.