CAS 4731-53-7 Trioctylphosphine - Analytical Products / Alfa Chemistry

CAT	AP4731537
CAS	4731-53-7
Structure
MDL Number	MFCD00015298
Molecular Weight	370.64
EC Number	225-234-2
InChI Key	RMZAYIKUYWXQPB-UHFFFAOYSA-N
REAXYS Number	1776995

Description	technical grade, 90%
Density	0.831 g/mL at 25 °C (lit.); reaction type: Heck Reaction; reaction type: Hiyama Coupling; reaction type: Negishi Coupling; reaction type: Sonogashira Coupling; reaction type: Stille Coupling; reaction type: Suzuki-Miyaura Coupling; reagent type: ligand
Assay	90%
BP	284-291 °C/50 mmHg (lit.)
Grade	technical grade
Linear Formula	[CH3(CH2)7]3P
Refractive Index	n20/D 1.468 (lit.)
Size	100ML, 4X25ML, 500ML, 2.5L

Trioctylphosphine as Both Solvent and Stabilizer to Synthesize CdS Nanorods

Shutang Chen, Xiaoling Zhang, Qiuhua Zhang, Weihong Tan

Nanoscale Res Lett. 2009 Jun 17;4(10):1159-1165.

PMID: 20596487

Trioctylphosphine as Self-Assembly Inducer

Gunadhor S Okram, Jaiveer Singh, Netram Kaurav, Niranjan P Lalla

Faraday Discuss. 2015;181:211-23.

PMID: 25917190

Trioctylphosphine-assisted Morphology Control of ZnO Nanoparticles

Yun-Kun Hong, GeonHee Cho, YoonSu Park, Soong Ju Oh, Don-Hyung Ha

Nanotechnology. 2018 Jun 1;29(22):225602.

PMID: 29513266

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Case Study

Synthesis of CoO Nanoparticles Using Trioctylphosphine

Sharma, Vikash, et al. Journal of Magnetism and Magnetic Materials 497 (2020): 166000.

Cobalt oxide (CoO) nanoparticles (NPs) have attracted significant research interest due to their excellent properties and potential applications in capacitors, lithium-ion batteries, catalysts, and biomedical fields. In this study, we developed a simple, novel, eco-friendly, efficient, and reproducible thermal decomposition method to control the synthesis of monodisperse CoO NPs with separate single-phase face-centered cubic (fcc) and monoclinic phases, using cobalt(II) acetate tetrahydrate (CAT), oleylamine (OA), and trioctylphosphine (TOP).
0.25 mL of TOP preheated to 200 °C was added to a solution of 2 g CAT and 8 mL OA, which had been degassed at 120-130 °C for 30 minutes. The resulting solution was further heated under a nitrogen atmosphere to 230 °C and maintained for 5.5 hours. The color change from pink (due to CAT) to blue and finally brown indicated the formation of CoO NPs. After cooling to 30 °C, the reaction products were washed and dried using a similar method, and the sample was labeled as CoO₃. Other samples were labeled as CoO₄, CoO₅, CoO₆, CoO₇, and CoO₈, with TOP concentrations of 0.25 mL, 1 mL, 3 mL, 8 mL, and 12 mL, respectively, while keeping other conditions constant. These were prepared within 1.5 hours. Additional samples labeled as CoO₉, CoO₁₀, and CoO₁₁ were prepared with 8 mL OA, a combination of 8 mL OA and 12 mL TOP (like CoO₃), and 10 mL TOP, reacting at 260 °C for 2 hours, respectively, while maintaining other conditions unchanged to observe the effects of surfactants and reaction temperature.

Synthesis of Uniformly Sized Nickel Phosphide Nanoparticles via a Trioctylphosphine-Mediated Approach

Thompson, David, et al. Inorganic Chemistry (2024).

Nickel phosphides are particularly interesting due to their high activity and stability as catalysts in oil/biorefining and hydrogen production. Despite their significant catalytic potential, synthesizing various phase-pure and uniformly sized nickel phosphide nanoparticles remains a challenge. In this work, a robust trioctylphosphine (TOP)-mediated pathway was developed to produce highly uniform, phase-pure Ni₁₂P₅, Ni₂P, and Ni₅P₄ nanoparticles.
Synthesis of Crystalline Ni2P Nanoparticles: Under an argon flow, 52.4 mg (0.2 mmol) of Ni(acac)₂, 1 mL of oleylamine (OLAM), and 4 mL of octadecene (ODE) were added to a three-neck round-bottom flask equipped with a Schlenk line. After degassing the mixture under argon for 10 minutes, 1 mL of TOP was introduced into the flask. The reaction mixture was then heated to 215 °C and maintained at that temperature for 1 hour. After 1 hour, the reaction temperature was increased to 315 °C and held for another hour, after which the reaction was quenched by removing the flask from the heating mantle. Once the solution mixture cooled to 100 °C, it was transferred to a 50 mL centrifuge tube, mixed with 3 mL of toluene and 30 mL of ethanol, and centrifuged at 8000 rpm for 5 minutes. After centrifugation, the supernatant was discarded, and the precipitate was purified twice using a 1:10 mixture of toluene and ethanol. The final product was dispersed in 3 mL of toluene for future use.
Synthesis of Crystalline Ni12P5 Nanoparticles: The synthesis method for crystalline Ni₁₂P₅ nanoparticles is the same as that for crystalline Ni₂P nanoparticles, but with an additional heating step, maintaining the temperature at 280 °C.
Synthesis of Crystalline Ni5P4 Nanoparticles: The synthesis method for crystalline Ni₅P₄ nanoparticles follows the same procedure as that for crystalline Ni₂P nanoparticles but uses 1 mL of TOP and 5 mL of OLAM without ODE. The additional heating step is raised to 350 °C and maintained for 1 hour.

One-Pot Synthesis of Magnetic Iron Phosphide Nanoparticles Using Trioctylphosphine

Ahluwalia, D., Varshney, A., Kumar, S., Kumar, A., Warkar, S. G., Singh, N., & Dubey, P. (2020). Inorganic and Nano-Metal Chemistry, 50(10), 908-913.

The standard method for synthesizing iron phosphide (FeP) involves preparing a sodium phosphide precursor and then reacting it with iron(III) chloride (FeCl₃). Previous methods reported for synthesizing FeP relied on the use of toxic red or yellow phosphorus to generate sodium phosphide (Na₃P). In the current study, relatively less toxic substances, such as trioctylphosphine (TOP) and sodium metal (Na), were used instead of red or yellow phosphorus to generate Na₃P.
The preparation of Na₃P in situ was achieved by mixing 2.24 mL (0.0072 mol) of TOP with 0.5 g (0.022 mol) of sodium metal in an argon atmosphere at 250 °C, along with 1.76 mL of excess TOP. The mixture was stirred at 280 °C for 2-3 hours, turning black with a green reflective hue, indicating the formation of Na₃P. During the stirring process, anhydrous FeCl₃ (0.5 g, 0.0031 mol) dissolved in 4 mL of TOP was slowly added to the Na₃P mixture. The temperature was then raised to 320 °C, and stirring was continued under an inert atmosphere for 3-4 hours. The mixture changed from green-black to black, indicating that the reaction was complete.