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Keyword Author: black phosphorus

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

Materials with few layers have been subjected to extensive research for the last few decades owing to their remarkable properties as for example catalysts, optical and electrical devices, or sensors. The properties and electronic structure of these materials can be tailored by the introduction of substituents. In the case of more reactive species, the modification …

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth Read More »

Black Phosphorus Cytotoxicity Assessments Pitfalls: Advantages and Disadvantages of Metabolic and Morphological Assays

Black phosphorus (BP) belongs to a group of 2D nanomaterials and nowadays attracts constantly increasing attention. Parallel to the growing utilization of BP nanomaterial increase also the requirements for the thorough comprehension of its potential impact on human and animal health. The aim of this study was to compare and discuss five assays commonly used …

Black Phosphorus Cytotoxicity Assessments Pitfalls: Advantages and Disadvantages of Metabolic and Morphological Assays Read More »

Cytotoxicity of phosphorus allotropes (black, violet, red)

Black phosphorus has shown great potential in many applications such as energy, optoelectronics and bio/sensing. However, its toxicity study is still in its infancy. Here, the cytotoxicity of black phosphorus prepared by two different synthesis methods, i.e. vapour growth transport and high pressure conversion, are investigated. Precursor and intermediate materials, namely red and violet phosphorus, …

Cytotoxicity of phosphorus allotropes (black, violet, red) Read More »

Fluorination of Black Phosphorus-Will Black Phosphorus Burn Down in the Elemental Fluorine?

Black phosphorus (BP) represents a promising tunable bandgap alternative to graphene and other 2D materials in the field of semiconductors. However, its reactivity toward covalent modification of its surface (as a key to its bandgap adjustment) is scarcely reported. Here a method of covalent modification of BP involving reaction with fluorine is reported. Other allotropes …

Fluorination of Black Phosphorus-Will Black Phosphorus Burn Down in the Elemental Fluorine? Read More »

Products of Degradation of Black Phosphorus in Protic Solvents

Deterioration of the surface of black phosphorus (BP) caused by ambient atmosphere is an undesired process, limiting broader use of BP in many areas. The mechanism of BP degradation was explained theoretically, and the oxidized materials were thoroughly characterized experimentally. However, the surface analysis techniques introduce only a limited insight into the real state of …

Products of Degradation of Black Phosphorus in Protic Solvents Read More »

Functional Protection of Exfoliated Black Phosphorus by Noncovalent Modification with Anthraquinone

Few and monolayer black phosphorus (phosphorene) is currently an intensively researched material. Shear exfoliated black phosphorus (BPSE) nano sheets were functionalized with the redox active antraquinone (AQ) that can provide additional charge storage capacity. The noncovalent interaction of BP with AQ occurs due to van der Waals interactions. X-ray photoelectron spectroscopy results show that AQ …

Functional Protection of Exfoliated Black Phosphorus by Noncovalent Modification with Anthraquinone Read More »

Black Phosphorus Synthesis Path Strongly Influences Its Delamination, Chemical Properties and Electrochemical Performance

We show here that synthetic approaches to layered black phosphorus (BP), namely, high-pressure conversion of red phosphorus (RP) and vapor growth of BP from RP in the presence of Sn/SnI4, lead to dramatically different crystallinity of BP which in turn strongly influences its exfoliation, chemical and electrochemical properties. In particular, we demonstrate that black phosphorus …

Black Phosphorus Synthesis Path Strongly Influences Its Delamination, Chemical Properties and Electrochemical Performance Read More »

Black Phosphorus Nanoparticles Potentiate the Anticancer Effect of Oxaliplatin in Ovarian Cancer Cell Line

During the past few years, growing attention has been paid to black phosphorus (BP) and its unique optical, electrical, and catalytic properties. Furthermore, BP has proven to be biocompatible and biodegradable; qualities that present new opportunities for its utilization in the field of life sciences. However, despite all its suitable properties and applicability, its utilization …

Black Phosphorus Nanoparticles Potentiate the Anticancer Effect of Oxaliplatin in Ovarian Cancer Cell Line Read More »

Electrochemical Exfoliation of Layered Black Phosphorus into Phosphorene

Among 2D materials that recently have attracted enormous interest, black phosphorus (BP) is gaining a rising popularity due to its tunable band-gap structure, which is strongly correlated to the thickness and can enable its use in optoelectronic and electronic applications. It is therefore important to provide a facile and scalable methodology to prepare single or …

Electrochemical Exfoliation of Layered Black Phosphorus into Phosphorene Read More »

The Covalent Functionalization of Layered Black Phosphorus by Nucleophilic Reagents

Layered black phosphorus has been attracting great attention due to its interesting material properties which lead to a plethora of proposed applications. Several approaches are demonstrated here for covalent chemical modifications of layered black phosphorus in order to form P-C and P-O-C bonds. Nucleophilic reagents are highly effective for chemical modification of black phosphorus. Further …

The Covalent Functionalization of Layered Black Phosphorus by Nucleophilic Reagents Read More »

Layered Black Phosphorus: Strongly Anisotropic Magnetic, Electronic, and Electron-Transfer Properties

Layered elemental materials, such as black phosphorus, exhibit unique properties originating from their highly anisotropic layered structure. The results presented herein demonstrate an anomalous anisotropy for the electrical, magnetic, and electrochemical properties of black phosphorus. It is shown that heterogeneous electron transfer from black phosphorus to outer- and inner-sphere molecular probes is highly anisotropic. The …

Layered Black Phosphorus: Strongly Anisotropic Magnetic, Electronic, and Electron-Transfer Properties Read More »

Voltammetry of Layered Black Phosphorus: Electrochemistry of Multilayer Phosphorene

Layered black phosphorus crystals were prepared by the chemical vapor transport method. It is characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction. Black phosphorus exhibits inherent electrochemistry in the sense that it is oxidizable similar to 560 mV (vs Ag/AgCl). This study is a first step in the utilization …

Voltammetry of Layered Black Phosphorus: Electrochemistry of Multilayer Phosphorene Read More »

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