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74731

Sigma-Aldrich

1-Octadecanethiol

purum, ≥95.0% (GC)

Sinonimo/i:

Mercaptan C18, Octadecyl mercaptan, Stearyl mercaptan

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About This Item

Formula condensata:
CH3(CH2)17SH
Numero CAS:
2885-00-9
Peso molecolare:
286.56
Beilstein:
1811934
Numero CE:
220-744-1
Numero MDL:
MFCD00004886
Codice UNSPSC:
12352300
ID PubChem:
329765824
NACRES:
NA.23

Grado

purum

Livello qualitativo

200

Saggio

≥95.0% (GC)

Stato

solid

P. ebollizione

204-210 °C/11 mmHg (lit.)

Punto di fusione

30-33 °C (lit.)

Densità

0.847 g/mL at 25 °C (lit.)

Stringa SMILE

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
QJAOYSPHSNGHNC-UHFFFAOYSA-N

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Descrizione generale

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.

Applicazioni

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.

Risultati analitici

may contain precipitation in melt

Pittogrammi

Exclamation markEnvironment
GHS07,GHS09

Avvertenze

Warning

Indicazioni di pericolo

H315,H400

Classi di pericolo

Aquatic Acute 1 - Skin Irrit. 2

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

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Certificati d'analisi (COA)

Lot/Batch Number
WXBD6753V
WXBD5865V
WXBD3624V
WXBD0947V
WXBC6087V

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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)
Reduced graphene oxide-templated photochemical synthesis and in situ assembly of Au nanodots to orderly patterned Au nanodot chains.
Xiao Huang et al.
Small (Weinheim an der Bergstrasse, Germany), 6(4), 513-516 (2010-01-16)
Xianghui Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 26(5), 3654-3658 (2009-12-17)
We have reported an easy means in this paper to imitate the "lotus leaf" by constructing a superhydrophobic surface through a process combining both electroless galvanic deposition and self-assembly of n-octadecanethiol. Superhydrophobicity with a static water contact angle of about
Qishu Qu et al.
Electrophoresis, 31(3), 556-562 (2010-02-02)
Nonporous monodispersed silica spheres of 1.3 microm were coated with gold nanoparticles (AuNPs) and subsequently coated with n-octadecanethiol. By transmission electron microscopy analysis, the average diameter of the AuNPs on the silica spheres was determined to be 12 nm. The
Wei Wei Yao et al.
The journal of physical chemistry. B, 113(46), 15263-15271 (2009-10-30)
A procedure was developed for initiating electron transfer from a gold electrode to a low molecular weight electron acceptor present inside supported lipid (lecithin) bilayers, followed by further electron transfer to an electron acceptor present in an aqueous solution. The
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