Ionic liquid passivated CdSe nanocrystals

Abstract

CdSe nanoparticles have been prepared, using the phosphonium ionic liquid trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentylphosphinate) as a solvent and capping agent.

The synthesis and characterisation of masked phosphonioalkyl selenoates: Potential ligands for the production of functionalised gold nanoparticles

“…However, although it is well established that tertiary phosphines and phosphine oxides, such as TOPO [9], are effective passivating ligands for the production of MPCs, other phosphorus-containing species have received comparatively little attention. The few available reports include studies of CdSe nanoparticles capped with the phosphonium ionic liquid trihexyl(tetradecyl)phosphonium bis (2,4,4-trimethylpentylphosphinate) [10], and gold nanoparticles capped with phosphides ðPR À 2 Þ [11]. In order to extend the range of cationic phosphonium ligands we have prepared two new potential phosphonioalkylselenoate precursor ligands.…”

ω-Thioacetylalkylphosphonium salts: Precursors for the preparation of phosphonium-functionalised gold nanoparticles

“…Tris(hydroxymethyl)phosphine has been used to synthesise gold nanoparticles which readily form conjugates with DNA [24,25], and recently CdSe nanoparticles capped with the phosphonium ionic liquid trihexyl(tetradecyl)phosphonium bis(2,4,4-trimethylpentylphosphinate) have been reported [26].…”

Simple and low temperature preparation and characterization of CdS nanoparticles as a highly efficient photocatalyst in presence of a low-cost ionic liquid

“…Purity and composition of the products were studied by energy dispersive X-ray spectroscopy (EDX) and is displayed in Band gap energy for the samples was calculated using wavelength of maximum absorption that is related to difference in energy of valence band and conduction band of semiconductors [53,54]. The band gap energy for the CdS nanoparticles prepared in the neat RTIL is 3.94 eV, which is relatively increased compared to that of bulk CdS (2.42 eV).…”