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What is OCTADECENE?Uses,Purification method

Sep 7,2020

Octadecene is a long-chain hydrocarbon and an alkene with the molecular formula C18H36. There are multiple structural isomers of octadecene, depending on the position of the double bond. 1-Octadecene, an alpha-olefin, is a relatively inexpensive solvent, with a boiling point of 315 °C.It is compatible with oleic acid.

Octadecene is used in the synthesis of colloidal quantum dots, but it can possibly be replaced by heat transfer fluids such as Dowtherm A or Therminol 66 in this process.

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Uses

1-octadecene is a widely used solvent for high temperature nanocrystal synthesis (120–320 °C).
Non-coordinating 1-octadecene  (ODE)is  another  frequently  used  solvent  and  seems  to  be plagued  less  by  impurities.Apart  from  its  role  as  solvent,  ODE  has  often  been  used  as reagent  in  NC  synthesis  since  ODE’sterminalalkene (vinyl) has  inherent  reactivity. For example, itsredox  properties  havebeen  harnessed to  reduce  elemental  sulfur  or  selenium  to its –II oxidation state, prior to incorporation in metal sulphide or selenide NCs.

Purification method

Typical purification procedures (precipitation/redispersion cycles  or size  exclusion  chromatography)fail  to  separate  the  poly(1-octadecene)  impurity from  the  nanocrystal  product. To  avoid  formation  of poly(1-octadecene),  we  replaced  1-octadecene with saturated, aliphatic solvents. Alternatively,the native ligandsare exchanged for  polar  ligands,  leading  to significant solubility  differences  between  nanocrystals  and poly(1-octadecene), thereforeallowing  isolation  ofpure  nanocrystals,  free  from  polymer impurities. These results will help design superior syntheses and improve nanocrystal purity, an important factor in manyapplications.

112-88-9 1-OCTADECENEUsesPurification method 1-OCTADECENE
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