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Sigma-Aldrich

1-Octadecanethiol

purum, ≥95.0% (GC)

Synonyme(s) :

Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan

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About This Item

Formule linéaire :
CH3(CH2)17SH
Numéro CAS:
2885-00-9
Poids moléculaire :
286.56
Numéro Beilstein :
1811934
Numéro CE :
220-744-1
Numéro MDL:
MFCD00004886
Code UNSPSC :
12352300
ID de substance PubChem :
329765824
Nomenclature NACRES :
NA.23

Qualité

purum

Niveau de qualité

200

Pureté

≥95.0% (GC)

Forme

solid

Point d'ébullition

204-210 °C/11 mmHg (lit.)

Pf

30-33 °C (lit.)

Densité

0.847 g/mL at 25 °C (lit.)

Chaîne SMILES 

CCCCCCCCCCCCCCCCCCS

InChI

1S/C18H38S/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3

Clé InChI

QJAOYSPHSNGHNC-UHFFFAOYSA-N

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Description générale

1-Octadecanethiol (ODT) is a water soluble sulfur compound with an 18 carbon alkyl chain, which forms a strong hydrophobic assembly with transition metals, like gold .It forms self-assembled monolayers (SAMs) on the surface of such transition metals. The thiol membrane when covalently bonded with the surface of the metal electrode, it shows electrostriction phenomenon leading to variation in capacitance.ODT SAMs have a hydrophobic surface with contact angle of 102oC.

Application

ODT is used to deposit thiolated molecules onto the surface of gold substrates, such as
  • SAMs on gold quartz crystal resonators.
  • on the tip of atomic force microscope probes.
  • capacitive sensors.

Remarque sur l'analyse

may contain precipitation in melt

Pictogrammes

Exclamation markEnvironment
GHS07,GHS09

Mention d'avertissement

Warning

Mentions de danger

H315,H400

Classification des risques

Aquatic Acute 1 - Skin Irrit. 2

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

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Certificats d'analyse (COA)

Lot/Batch Number
WXBF3207V
WXBF2745V
WXBD7803V
WXBD9457V
WXBD6753V

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Polarization modulation Fourier transform infrared reflectance measurements of thin films and monolayers at metal surfaces utilizing real-time sampling electronics.
Barbara BJ, et al
Analytical Chemistry, 63(1), 55-60 (1991)
Khalid S Salaita et al.
Nano letters, 6(11), 2493-2498 (2006-11-09)
Experiments that utilize structures generated by dip-pen nanolithography (DPN) as positive resists for fabricating nanohole arrays and lithographic masters are described. The technique takes advantage of the difference in desorption potentials for patterned structures made from 16-mercaptohexadecanoic acid (MHA) and
Diego Millo et al.
Colloids and surfaces. B, Biointerfaces, 81(1), 212-216 (2010-08-03)
Hybrid bilayer lipid membranes (HBMs) were built on roughened silver electrodes exhibiting surface-enhanced Raman scattering (SERS) activity. The HBM consisted of a first layer of octadecanethiol (ODT) directly bound to the electrode surface, on which a second layer of 1,2-diphytanoyl-sn-glycero-3-phosphocholine
Jimin Yao et al.
Advanced materials (Deerfield Beach, Fla.), 22(10), 1102-1110 (2010-04-20)
Plasmonic crystals fabricated with precisely controlled arrays of subwavelength metal nanostructures provide a promising platform for sensing and imaging of surface binding events with micrometer spatial resolution over large areas. Soft nanoimprint lithography provides a robust, cost-effective method for producing
Ori Stein et al.
The journal of physical chemistry. B, 112(13), 3955-3962 (2008-03-08)
The interactions of water, carbon dioxide, and Xe with octadecanethiol (C(18)H(37)SH, ODT) self-assembled monolayers (SAMs) were studied under ultrahigh vacuum conditions employing temperature-programmed desorption and optical diffraction measurements. The ODT layer was grown on a 1 nm thick gold film
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