Tri n octylphosphine top

Manufactured by Merck Group

Tri-n-octylphosphine (TOP) is a colorless, viscous liquid organic compound used as a reagent and ligand in various laboratory applications. It is a neutral, trivalent phosphorus compound with three n-octyl substituents. TOP is commonly used in the synthesis and stabilization of semiconductor nanoparticles, such as quantum dots, due to its ability to coordinate with metal ions.

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4 protocols using tri n octylphosphine top

Synthesis of Cadmium Selenide Nanocrystals

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Cadmium carbonate (CdCO₃) (98%, Aldrich), selenium powder (Se) (100 mesh, 99.5% trace metals basis, ACROS), Tetrakis(acetonitrile)copper(I) hexafluorophosphate (97%, Aldrich), tri-n-octylphosphine oxide (TOPO) (99%, Aldrich), tri-n-octylphosphine (TOP) (90%, Aldrich), 1-octadecene (ODE) (90%, Aldrich), stearic acid (SA) (95%), toluene (99.5%, VWR), m ethanol (Fisher, 99.9%), and ethanol (Alfa Aesar, 94–96%). All chemicals were purchased and used without further purification.

Khammang A., Wright J.T, & Meulenberg R.W. (2021). Mechanistic insight into copper cation exchange in cadmium selenide semiconductor nanocrystals using X-ray absorption spectroscopy. Nature Communications, 12, 438.

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Synthesis of Chalcogenide Nanocrystals

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Cadmium acetate dihydrate (Cd(OAc)₂•2H₂O 99.999%, Alfa Aesar), tellurium powder (99.99%, Alfa Aesar), selenium powder (99.99%, Alfa Aesar), oleylamine (OLA, 90%, Aldrich), tri-n-octylphosphine (TOP, 90%, Aldrich), octylamine (OTA, 99%, Aldrich), ethylacetate (99.5%, Tianjin Zhiyuan Chemical), and nitrogen gas (N₂, 99.99%, Chengdu Taiyu gas Co. Ltd.) were used as received without further purification unless stated otherwise. Toluene (AR grade, Chengdu Kelong Chemical) was distilled and further dried with MgSO₄ (99%, Tianjin Zhiyuan Chemical). Oleylamine (OLA) was stored in a freezer, while the other chemicals were stored under an ambient environment.

Gao D., Hao X., Rowell N., Kreouzis T., Lockwood D.J., Han S., Fan H., Zhang H., Zhang C., Jiang Y., Zeng J., Zhang M, & Yu K. (2019). Formation of colloidal alloy semiconductor CdTeSe magic-size clusters at room temperature. Nature Communications, 10, 1674.

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Synthesis of Quantum Dot Composites

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Cadmium oxide (CdO), tri-n-octylphosphine (TOP, purity >97%), and 3-(trimethoxysilyl)propyl
methacrylate were purchased from Sigma-Aldrich. Octadecene (ODE, Acros),
oleic acid (OA, Showa), selenium (Se, Alfa Aesar), zinc acetate (Riedel-de
Haën), and sulfur (purity >99%, Riedel-de Haën) were
of reagent grade. Analytic-grade solvents of toluene and ethanol were
purchased from Echo. A sample of commercially available acrylic acrylate
oligomer (trade mark, B2) was kindly provided by Hopax Company in
Taiwan to prepare the QD composites. Diphenyl(2,4,6-trimethylbenzoyl)-phosphine
oxide (TPO, Darocur), 1-hydroxy-cyclohexyl-phenyl-ketone (Irgacure
184, Ciba), and 2-methyl-1-[4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone
(Irgacure 907, Ciba) were used as photoinitiators. All chemicals were
used as received without further purification.

Chou C.C., Wang T.L., Chen W.J, & Yang C.H. (2019). Quantum Dot–Acrylic Acrylate Oligomer Hybrid Films for Stable White Light-Emitting Diodes. ACS Omega, 4(2), 3234-3243.

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Synthesis of Semiconductor Nanocrystals

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Di-n-octylamine (+98%), di-n-pentylamine
(99%), di-n-propylamine (99%), diethylamine (>99.5%),
phenethylamine
(≥99%), n-dodecylamine (≥99%), n-octylamine (+99%), n-pentylamine (+99%), n-propylamine (+98%), Cd(OAc)₂·2H₂O (>98%), trin-octylphosphine (TOP) (97%), and
oleylamine
(or cis-9-octadecenylamine, technical grade, 70%) were obtained from
Sigma-Aldrich. Selenourea (99.9%, metal basis) was obtained from Alpha
Aesar. All were used as received and stored under N₂. Toluene
was obtained from Sigma-Aldrich (CHROMASOLV for HPLC, ≥99.9%).
Transmission electron microscopy (TEM) sample grids (Cu with holey
carbon film) were obtained from Ted Pella, Inc.
All synthetic
procedures were conducted under dry N₂, except the final
washing steps, which were conducted in the ambient atmosphere. The
reaction mixtures were not stirred. The synthetic products were generally
stored as reaction mixtures, after addition of TOP (see below).

Wang Y., Zhang Y., Wang F., Giblin D.E., Hoy J., Rohrs H.W., Loomis R.A, & Buhro W.E. (2014). The Magic-Size Nanocluster (CdSe)34 as a Low-Temperature Nucleant for Cadmium Selenide Nanocrystals; Room-Temperature Growth of Crystalline Quantum Platelets. Chemistry of Materials, 26(7), 2233-2243.

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