Oleylamine
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Nanocrystals of Cesium Lead Halide Perovskites (CsPbX<sub>3</sub>, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut Open
Metal halides perovskites, such as hybrid organic-inorganic CH3NH3PbI3, are newcomer optoelectronic materials that have attracted enormous attention as solution-deposited absorbing layers in solar cells with power conversion efficiencies r…
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Highly Dynamic Ligand Binding and Light Absorption Coefficient of Cesium Lead Bromide Perovskite Nanocrystals Open
Lead halide perovskite materials have attracted significant attention in the context of photovoltaics and other optoelectronic applications, and recently, research efforts have been directed to nanostructured lead halide perovskites. Collo…
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Colloidal Synthesis of Double Perovskite Cs<sub>2</sub>AgInCl<sub>6</sub> and Mn-Doped Cs<sub>2</sub>AgInCl<sub>6</sub> Nanocrystals Open
We show here the first colloidal synthesis of double perovskite Cs2AgInCl6 nanocrystals (NCs) with a control over their size distribution. In our approach, metal carboxylate precursors and ligands (oleylamine and oleic acid) are dissolved …
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Role of Acid–Base Equilibria in the Size, Shape, and Phase Control of Cesium Lead Bromide Nanocrystals Open
A binary ligand system composed of aliphatic carboxylic acids and primary amines of various chain lengths is commonly employed in diverse synthesis methods for CsPbBr3 nanocrystals (NCs). In this work, we have carried out a systematic stud…
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Colloidal Synthesis of Quantum Confined Single Crystal CsPbBr<sub>3</sub> Nanosheets with Lateral Size Control up to the Micrometer Range Open
We report the nontemplated colloidal synthesis of single crystal CsPbBr3 perovskite nanosheets with lateral sizes up to a few micrometers and with thickness of just a few unit cells (i.e., below 5 nm), hence in the strong quantum confineme…
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Colloidal Synthesis of Strongly Fluorescent CsPbBr<sub>3</sub> Nanowires with Width Tunable down to the Quantum Confinement Regime Open
We report the colloidal synthesis of strongly fluorescent CsPbBr3 perovskite\nnanowires (NWs) with rectangular section and with tuneable width, from 20 nm\n(exhibiting no quantum confinement, hence emitting in the green) down to around\n3 …
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Low-Cost Synthesis of Highly Luminescent Colloidal Lead Halide Perovskite Nanocrystals by Wet Ball Milling Open
Lead halide perovskites of APbX3 type [A = Cs, formamidinium (FA), methylammonium; X = Br, I] in the form of ligand-capped colloidal nanocrystals (NCs) are widely studied as versatile photonic sources. FAPbBr3 and CsPbBr3 NCs have become p…
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Oleic acid/oleylamine ligand pair: a versatile combination in the synthesis of colloidal nanoparticles Open
Oleic acid and oleylamine are added in a solution containing suitable precursors and they can often form complexes with metal ions. These complexes may be thermally decomposed to yield ligand-coated nanoparticles with a tendency to form as…
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Surface Ligand Management Aided by a Secondary Amine Enables Increased Synthesis Yield of CsPbI<sub>3</sub> Perovskite Quantum Dots and High Photovoltaic Performance Open
Lead‐halide perovskite quantum dots (PQDs) or more broadly, nanocrystals possess advantageous features for solution‐processed photovoltaic devices. The nanocrystal surface ligands play a crucial role in the transport of photogenerated carr…
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Au–CsPbBr<sub>3</sub> Hybrid Architecture: Anchoring Gold Nanoparticles on Cubic Perovskite Nanocrystals Open
A selective growth of gold (Au) nanoparticles on the corners of CsPbBr3 nanocrystals (NCs) is made possible with the treatment of Au(III) salts such as Au(III) bromide and Au(III) chloride in solution. The surface bound oleylamine ligands …
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Aminophosphines: A Double Role in the Synthesis of Colloidal Indium Phosphide Quantum Dots Open
Aminophosphines have recently emerged as economical, easy-to-implement precursors for making InP nanocrystals, which stand out as alternative Cd-free quantum dots for optoelectronic applications. Here, we present a complete investigation o…
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Self-Assembled 3D Flower-Like Nickel Hydroxide Nanostructures and Their Supercapacitor Applications Open
Three-dimensional (3D) nanostructures have attracted considerable attention because of their high surface areas and unique properties which gives outstanding performance in catalysis and energy storage applications. This paper proposes the…
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Synthesis of Lateral Size-Controlled Monolayer 1<i>H-</i>MoS<sub>2</sub>@Oleylamine as Supercapacitor Electrodes. Open
A new wet chemistry approach, based on the hot-injection-thermolytic decomposition of the single-source precursor [Mo2O2S2(S2COEt)2] in oleylamine, is described for the production of nanodimensional 1H-MoS2@oleylamine. High quality freesta…
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General Strategy for the Preparation of Stable Luminous Nanocomposite Inks Using Chemically Addressable CsPbX<sub>3</sub> Peroskite Nanocrystals Open
© 2018 American Chemical Society. The potential optoelectronic applications of perovskite nanocrystals (NCs) are primarily limited by major material instability arising from the ionic nature of the NC lattice. Herein, we introduce a facile…
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Copper nanoparticles of well-controlled size and shape: a new advance in synthesis and self-organization Open
Here, we report a new synthetic route for spherical small copper nanoparticles (CuNPs) with size ranging from 3.5 nm to 11 nm and with an unprecedented associated monodispersity (<10%). This synthesis is based on the reduction of an organo…
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Electrocatalytic Nanoparticles That Mimic the Three-Dimensional Geometric Architecture of Enzymes: Nanozymes Open
Enzymes are characterized by an active site that is typically embedded deeply within the protein shell thus creating a nanoconfined reaction volume in which high turnover rates occur. We propose nanoparticles with etched substrate channels…
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In Situ Synthesis of PbS Nanocrystals in Polymer Thin Films from Lead(II) Xanthate and Dithiocarbamate Complexes: Evidence for Size and Morphology Control Open
Lead sulfide has been grown from single molecular precursors within a polymer matrix to form networks of PbS nanocrystals. These materials are model systems for the processing of polymer–nanoparticle layers for flexible hybrid photovoltaic…
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Role of Composition and Size of Cobalt Ferrite Nanocrystals in the Oxygen Evolution Reaction Open
Sub‐10 nm CoFe 2 O 4 nanoparticles with different sizes and various compositions obtained by (partial) substitution of Co with Ni cations have been synthesized by using a one‐pot method from organic solutions by the decomposition of metal …
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Synthesis of Cu2O/CuO Nanocrystals and Their Application to H2S Sensing Open
Semiconducting metal oxide nanocrystals are an important class of materials that have versatile applications because of their useful properties and high stability. Here, we developed a simple route to synthesize nanocrystals (NCs) of coppe…
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Surface Chemistry Matters. How Ligands Influence Excited State Interactions between CsPbBr<sub>3</sub> and Methyl Viologen Open
The photocatalytic properties of cesium lead bromide (CsPbBr3) perovskite nanocrystals make them attractive for designing light harvesting assemblies. Often ignored, the surface chemistry can dictate the excited state interactions of these…
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Purification of Oleylamine for Materials Synthesis and Spectroscopic Diagnostics for <i>trans</i> Isomers Open
Oleylamine is widely used in nanomaterial and metal-halide perovskite synthesis. Impurities in commercially available oleylamine reagents are identified, purification procedures are explained, beneficial effects on lead chloride/oleylamine…
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High-Brightness and Color-Tunable FAPbBr<sub>3</sub> Perovskite Nanocrystals 2.0 Enable Ultrapure Green Luminescence for Achieving Recommendation 2020 Displays Open
To best catch human eyes in next-generation displays, the updated recommendation 2020 (Rec. 2020) standard has called for ultrapure green emitters to be qualified with a narrow emission of 525-535 nm with a full width at half-maximum (fwhm…
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Surface Chemistry of Lead Halide Perovskite Colloidal Nanocrystals Open
ConspectusThe surface chemistry of lead halide perovskite nanocrystals (NCs) plays a major role in dictating their colloidal and structural stability as well as governing their optical properties. A deep understanding of the nature of the …
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Study on the mechanism of rapid formation of ultra-thick tribofilm by CeO2 nano additive and ZDDP Open
CeO 2 nanoparticles are potential anti-wear additives because of their outstanding anti-wear and load-bearing capacity. However, the shear-sintering tribo-film formation mechanism of oxide nanoparticles limits the tribo-film formation rate…
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Scalable synthesis of colloidal CsPbBr<sub>3</sub> perovskite nanocrystals with high reaction yields through solvent and ligand engineering Open
Application of green chemistry to obtain 70% reaction yields of high quality CsPbBr3 perovskite nanocrystals through solvent and ligand engineering.
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Effect of Particle Size on the Magnetic Properties of Ni Nanoparticles Synthesized with Trioctylphosphine as the Capping Agent Open
Magnetic cores of passive components are required to have low hysteresis loss, which is dependent on the coercive force. Since it is well known that the coercive force becomes zero at the superparamagnetic regime below a certain critical s…
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<i>N</i>-Methylformamide as a Source of Methylammonium Ions in the Synthesis of Lead Halide Perovskite Nanocrystals and Bulk Crystals Open
We report chemical routes for the synthesis of both nanocrystals and bulk crystals of methylammonium (MA) lead halide perovskites employing N-methylformamide (NMF) as a source of MA ions. Colloidal nanocrystals were prepared by a transamid…
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Facile Synthesis of Copper(I) Oxide Nanochains and the Photo-Thermal Conversion Performance of Its Nanofluids Open
In this thesis, Cu2O nanochains were synthesized by thermal decomposition with copper formate-octylamine as the precursor, oleic acid and oleylamine as the catalyst stabilizer agent and paraffin as the solvent. The phase structure and micr…
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Economically attractive route for the preparation of high quality magnetic nanoparticles by the thermal decomposition of iron(III) acetylacetonate Open
The thermal decomposition (TD) methods are among the most successful in obtaining magnetic nanoparticles with a high degree of control of size and narrow particle size distribution. Here we investigated the TD of iron(III) acetylacetonate …
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Surface Modification Strategy Synthesized CsPbX<sub>3</sub> Perovskite Quantum Dots with Excellent Stability and Optical Properties in Water Open
The poor stability of CsPbX 3 (X = Cl, Br, I) perovskite quantum dots (PQDs) in polar solvents such as water, seriously hinders their practical application. Herein, 5‐Bromovaleric acid (BVA) is used to replace oleic acid (OA), the most com…