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294136

Sigma-Aldrich

Tetraoctylammonium bromide

98%

Sinonimo/i:

TOAB

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About This Item

Formula condensata:
[CH3(CH2)7]4N(Br)
Numero CAS:
14866-33-2
Peso molecolare:
546.79
Beilstein:
4169176
Numero CE:
238-936-9
Numero MDL:
MFCD00011863
Codice UNSPSC:
12352107
ID PubChem:
24857704
NACRES:
NA.22

Saggio

98%

Forma fisica

solid

Punto di fusione

95-98 °C (lit.)

Stringa SMILE

[Br-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC

InChI

1S/C32H68N.BrH/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;/h5-32H2,1-4H3;1H/q+1;/p-1
QBVXKDJEZKEASM-UHFFFAOYSA-M

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Categorie correlate

Descrizione generale

Tetraoctylammonium bromide is an organic surface coating agent commonly used to control the size and shape during nanoparticle synthesis.

Applicazioni

Tetraoctylammonium bromide (TOAB) has been used as a phase transfer agent to transfer gold tetrachloroaurate from aqueous phase to organic phase in a two-phase (organic-aqueous) method of alkanethiol stabilized gold nanoparticle synthesis. It is also used to prepare TOAB-capped gold nanoparticles, which shows well-defined plasmon absorption compared to thiol-capped nanoparticles.

Pittogrammi

Corrosion
GHS05

Avvertenze

Danger

Indicazioni di pericolo

H315,H318

Classi di pericolo

Eye Dam. 1 - Skin Irrit. 2

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

213.8 °F - closed cup

Punto d’infiammabilità (°C)

101 °C - closed cup

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

Certificati d'analisi (COA)

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Sigma-Aldrich

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Sigma-Aldrich

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Sigma-Aldrich

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Sigma-Aldrich

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Surface binding properties of tetraoctylammonium bromide-capped gold nanoparticles.
Thomas K G, et al.
Langmuir, 18(9), 3722-3727 (2002)
Integration of Organic Fluorophores in the Surface of Polymer?Coated Colloidal Nanoparticles for Sensing the Local Polarity of the Environment.
Amin F, et al.
ChemPhysChem, 13(4), 1030-1035 (2012)
Ying Zhang et al.
Toxicology in vitro : an international journal published in association with BIBRA, 29(4), 762-768 (2015-03-10)
Impact on health by nanomaterials has become a public concern with the great advances of nanomaterials for various applications. Surface coating agents are an integral part of nanoparticles, but not enough attention has been paid during toxicity tests of nanoparticles.
Motao Zhu et al.
ACS nano, 14(3), 3703-3717 (2020-02-15)
Engineered nanoparticles could trigger inflammatory responses and potentiate a desired innate immune response for efficient immunotherapy. Here we report size-dependent activation of innate immune signaling pathways by gold (Au) nanoparticles. The ultrasmall-size (<10 nm) Au nanoparticles preferentially activate the NLRP3
Shubo Tian et al.
Nature communications, 6, 8667-8667 (2015-10-21)
Revealing structural isomerism in nanoparticles using single-crystal X-ray crystallography remains a largely unresolved task, although it has been theoretically predicted with some experimental clues. Here we report a pair of structural isomers, Au38T and Au38Q, as evidenced using electrospray ionization
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