• Introduction to Zeolites

    Introduction to Zeolites
    Jul 15, 2018 | ACS MATERIAL LLC

    Zeolites, which are also called molecular sieves, are crystalline microporous materials formed primarily by SiO4 and AlO4 corner-sharing tetrahedral building units that form three-dimensional (3D) frameworks with well-defined channels and cavities of molecular dimensions. The void space within the crystal allows zeolites to discriminate molecules based on their size or geometric shape. With variable chemical compositions and unique pore topologies, zeolites have been utilized in a wide range of industrial applications such as adsorption/separation, ion-exchange processes and also as catalysts in the processes of oil refining and fine chemical synthesis. Introduction Zeolites, which are... Read More

  • GlowDots

    May 29, 2018 | ACS MATERIAL LLC

    Facile synthesis of multi-colored, protein-based, metal-free, stable, nontoxic and pH sensitive advanced functional nanoparticles (GlowDots) is now a reality. Controlled cross-linking of bovine serum albumin has resulted in the formation of spherical nanoparticles of 35 nm in diameter with a size distribution of ±10 nm. The nanoparticles are then conjugated with specific dyes to produce white-emitting particles with tunable excitation wavelengths. These nanoparticles are a chemical novelty because their particle size, size distribution, stability, surface chemistry and emission properties are under full chemical control and their size and absorption/emission properties can be independ... Read More

  • FluoDots

    May 22, 2018 | ACS MATERIAL LLC

    FluoDots are single protein nanoparticles labeled with particular fluorescent dyes for imaging and other applications. They are composed of a central protein core surrounded by a covalently attached lipid layer. FluoDots retain the structure and functions of the protein embedded in the core, however the particles have increased thermal stability and a longer shelf life. Numerous carboxylic groups present on the surface of FluoDots are available for further chemical modification of the particles. FluoDot size is tunable at 2.5 Å resolution and the color is tuned independently of the size, which is a major advantage over quantum dots. FluoDots are water-soluble, non-toxic, biocompatible... Read More

  • BioGraphene & Bio-MoS2 Suspensions in Water

    BioGraphene & Bio-MoS2 Suspensions in Water
    May 15, 2018 | ACS MATERIAL LLC

    Applications of graphene and its two-dimensional counterparts (MoS2, BN) in the biomedical and healthcare sectors require water dispersions and biocompatible derivatives.1,2 Although the successful exfoliation of these bulk materials using organic solvents,3,4 ionic liquids,5,6 or surfactants7 has been reported, the biocompatibility of the resulting product, quality, expense, and environmental impact still remain unaddressed. 8 Introduction In an effort to produce biocompatible graphene, proteins were recently used to yield aqueous graphene dispersions using two separate methods, shear and ultrasonication. Sonication gave low exfoliation efficiencies (1 mg mL−1 h−1), limited scala... Read More

  • BioGraphene Suspensions in Sera

    BioGraphene Suspensions in Sera
    May 8, 2018 | ACS MATERIAL LLC

    Synthesizing the graphene-bio interface has become an increasingly important step for biological applications. Touted as the material of the millennium, graphene has undergone rapid development focusing on optoelectronic applications for lightweight and ultrafast electronic devices. Properties such as high surface area, light weight, high mechanical strength and fluorescence also make graphene highly attractive for biological and health care applications. Colloidal stability and low toxicity are vital for the implementation of graphene materials for such applications like biosensors, drug delivery and bioelectronics, however, there have been challenges due to hydrophobicity, the presen... Read More

  • Industrial-Scale Graphene Nanoplatelets & Dispersions

    Industrial-Scale Graphene Nanoplatelets & Dispersions
    Jan 10, 2018 | ACS MATERIAL LLC

    Graphene is typically produced with either a top-down or bottom-up approach; however, manufacturing a vast amount of the material is beneficial in technical industries. Creating high-quality and high-yield graphene, such as graphene nanoplatelets and dispersions, can push forward its use in a variety of industrial applications such as electronics, touchscreens and light-emitting diodes. This report will explain the different methods used to synthesize a large amount of these graphene materials and its benefits in industrial applications. Introduction Graphene is a one-atom-thick, honeycomb lattice structure that was extracted from graphite as shown in Figure 1, below. Apart from graph... Read More

  • Carbon Nanomaterials

    Carbon Nanomaterials
    Dec 21, 2017 | ACS MATERIAL LLC

    Carbon nanostructures have expanded into a nice range of materials containing electrical and thermal conductivity along with other unique properties. Carbon nanomaterials, such as nanohorns, nanofibers and the more popular nanotubes, all have different shapes and features that set them apart from one another. Each nanomaterial incorporates graphene within its structure which adds to their distinctive characteristics and have been researched for use in electronics, sensors and batteries. Here, we will focus on the properties of these carbon materials measured on a nanometer scale and their promising applications. Introduction Carbon nanomaterials, such as carbon nanotubes, nanohorns and... Read More

  • Graphene-like Materials

    Graphene-like Materials
    Dec 18, 2017 | ACS MATERIAL LLC

    Since the discovery of graphene, other two-dimensional materials have gained further interest in hopes of finding similar extraordinary properties. Materials with a similar structure to that of graphene, such as black phosphorus and transition metal dichalcogenides, have been researched to potentially be used in applications comparable such as electronics, batteries, optical devices and more. With the ability to absorb light from visible to infrared, the possession of bandgaps, and a low friction coefficient, these 2D materials possess characteristics that sets them apart from its predecessor. This report will describe more about graphene-like materials and its promising use in future ... Read More

  • Mesporous Silica

    Mesporous Silica
    Dec 7, 2017 | ACS MATERIAL LLC

    Mesoporous silica materials have gained much attention due to its ordered pore structures and ability to be controlled at micrometer and nanometer scales. The material made excellent candidates to many applications such as drug delivery, adsorption and waste water treatment. The high surface area and narrow pore size distribution make this material suitable as catalysts and templates for other materials. Here, we will discuss what makes this material so unique, the different methods that was used to synthesize them and some of their applications. Introduction Mesoporous silicas (MS) are solid materials with a porous structure and many empty channels (mesopores) that absorb relatively l... Read More

  • Graphene Transfer

    Graphene Transfer
    Nov 29, 2017 | ACS MATERIAL LLC

    Fabricating graphene molecularly through Chemical Vapor Deposition (CVD) has been highly desirable and popular as it can produce the material with a large surface area. The CVD method involves graphene growth on a metal catalyst and the transfer of that graphene onto different substrates for various application purposes. Transferring the material is quite common and can be done in different ways, such as utilizing a thermal release tape and PMMA. This report will explain both techniques and its ease in transferring graphene. Introduction Since the graphene market has been on the rise over the past decade, producing a large, high-quality amount has been a common focus in research. Curre... Read More

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