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674516

Sigma-Aldrich

1-Hexadecanethiol

99%

Synonym(s):

Cetyl mercaptan, Hexadecyl mercaptan, Mercaptan C16

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About This Item

Linear Formula:
CH3(CH2)15SH
CAS Number:
Molecular Weight:
258.51
Beilstein:
1748495
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

99%

refractive index

n20/D 1.462 (lit.)

bp

184-191 °C/7 mmHg (lit.)

mp

18-20 °C (lit.)
20-24 °C

density

0.84 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CCCCCCCCCCCCCCCCS

InChI

1S/C16H34S/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17/h17H,2-16H2,1H3

InChI key

ORTRWBYBJVGVQC-UHFFFAOYSA-N

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General description

1-Hexadecanethiol (HDT) is an alkanethiol that forms a self-assembled monolayer (SAM) by linking sulfur ions with the surface atoms. The methyl groups form a network with the aqueous phase that allows the formation of hydrophobic surfaces with low surface tension.

Application

HDT functionalized gold surfaces with pentacene form a low injection barrier, which can be used to enhance the performance of pentacene organic field effect transistors (OFETs). It can also be used to immobilize silver nanoparticles (AgNPs), synthesized by reducing silver phosphine precursors.
Used to prepare thiol-functionalized 1.5 nm gold nanoparticles via a ligand exchange process with triphenylphosphine-stabilized nanoparticles. Used in the formation of hydrophobic SAMs. Due to the length of the alkane chain, the resulting monolayer is highly ordered.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

215.6 °F - closed cup

Flash Point(C)

102 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Monitoring of the self-assembled monolayer of 1-hexadecanethiol on a gold surface at nanomolar concentration using a piezo-excited millimeter-sized cantilever sensor
Campbell GA and Mutharasan R
Langmuir, 21(25), 11568-11573 (2005)
Liping Ding et al.
Polymers, 11(12) (2019-12-15)
A versatile, facile, energy-saving, low-cost and plant-inspired self-assembly strategy was used to prepare super-hydrophobic coating in this study. Concretely, an appealing super-hydrophobicity surface was obtained by designing a molecular building block phytic acid (PA)-Fe (III) complex to anchor the substrate
Synthesis of silver nanoparticles using different silver phosphine precursors: formation mechanism and size control
Andrieux-Ledier A, et al.
The Journal of Physical Chemistry C, 117(28), 14850-14857 (2013)
Bain, C. D.; Evall, J.; Whitesides, G. M.
Journal of the American Chemical Society, 111, 7155-7155 (1989)
X Torrelles et al.
Langmuir : the ACS journal of surfaces and colloids, 20(21), 9396-9402 (2004-10-06)
The c(4 x 2) structure of C16H33SH alkanethiol monolayers self-assembled on Au(111) has been studied by grazing incidence X-ray diffraction. This structure coexists on the surface with the (radical3x radical3)R30 degrees phase. The structural refinement of the c(4 x 2)

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