The Synthesis of a High Yield PbSe Quantum Dots by Hot Solution Method

A hybrid triple-layered nanocomposite structure of plasmonic gold (Au), polymethylmethacrylate (PMMA), and lead selenide (PbSe) quantum dot (QD) on quartz substrate was developed. The fabricated nanocomposite exhibited well-established triple-layered morphology (Au-PMMA-QD on quartz), but had different coupling distances between Au, on the bottom, and PbSe QD, on the top. Control of the coupling distances in terms of different thicknesses of a PMMA spacer layer was examined by etching for different durations, from 7 to 30 min. The corresponding thicknesses of the PMMA layer ranged from~3.8 to~88 nm at an etching rate of 2 nm/min. Atomic force microscopy measurements showed that the well-established triple-layered hybrid nanocomposite structure had the heights of~15 nm (Au) and~4 nm (PbSe QD). X-ray photoelectron spectroscopy results revealed the characteristic peaks assigned to each nanoparticle and polymer layer. The results illustrated the triple-layered structures with different PMMA spacer layers, with no cross interference between the layers.

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Preparation and Characterization of a Triple Layered Au‐PMMA‐PbSe Hybrid Nanocomposite: Manipulation of PMMA Spacer Layer by Oxygen Plasma Etching

Kim

Choi

Kim

et al. 2015

Bulletin Korean Chem Soc

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Preparation and structural properties of PbSe nanomaterial

Terra¹,

Mahmoud²,

Nasr³

et al. 2010

Surface & Interface Analysis

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Lead selenide nanostrucured material was prepared by hydrothermal method. 50 mg of PEG and 2.4 g of NaOH were added to 50 ml of deionized water, then 1 mM each of NaSeO3 and PbAc were added to the solution. 10 ml of hydrazine hydrate was added to the solution and transferred into a Teflon-lined autoclave. The reactants were heated for 9, 10 and 11 h. This process was repeated twice the prementioned concentration. X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analyses were carried out for the prepared powdered material. The crystallite size was determined from the X-ray diffraction and found to be in the nanometer size range. Transmission electron microscopy and electron diffraction were carried out for PbSe films prepared from ultrasonically dispersed PbSe suspension. The interplanar spacings, d (A • ) were determined from the obtained electron diffraction. The most suitable preparation condition is 10 h heating time, and the previously reported reactants concentration, since in this condition were well formed nanocubes spread all over the TEM screen area were observed.

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Insights into the optical and anti-bacterial properties of biogenic PbSe quantum rods

Jacob

Mohan

Gowda

2016

Journal of Saudi Chemical Society

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The Synthesis of a High Yield PbSe Quantum Dots by Hot Solution Method

Cited by 9 publications

References 21 publications

Preparation and Characterization of a Triple Layered Au‐PMMA‐PbSe Hybrid Nanocomposite: Manipulation of PMMA Spacer Layer by Oxygen Plasma Etching

Preparation and Characterization of a Triple Layered Au‐PMMA‐PbSe Hybrid Nanocomposite: Manipulation of PMMA Spacer Layer by Oxygen Plasma Etching

Preparation and structural properties of PbSe nanomaterial

Insights into the optical and anti-bacterial properties of biogenic PbSe quantum rods

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