Alfa Chemistry Blog

Quantum dots , also known as semiconductor nanocrystals, are nanoscale materials composed of a small number of atoms. The number of atoms in a quantum dot is usually between a few and a few hundred, and their size in all three dimensions are less than 100 nm. The movement of carriers in the three dimensions of quantum dots is limited by the size effect. Due to the quantum confinement effect, the energy levels of carriers in quantum dots are similar to those of atoms having a discontinuous energy level structure, so quantum dots are also called artificial atoms. Due to their special energy level structure, quantum dots exhibit unique physical properties. This paper mainly discusses some properties of quantum dots, including quantum confinement effect, quantum size effect, surface effect and luminescence property. Quantum confinement effect Generally, the smaller the volume, the greater the bandwidth, so the optical and electrical properties of the quantum dots are highly dependent on th...

H istory of Development As early as 1985, the discovery of fullerene with the “football” structure immediately attracted the world’s attention. Then, carbon nanotubes with a hollow cylindrical structure are formed based on mild modifications toward fullerenes. In 1991, Japanese researchers discovered carbon nanotubes in carbon fibers for the first time. In 2004, researchers discovered the 2D planar nanomaterial whose planar thickness is confined to the nanoscale range. At the same time, researchers also developed a practical “scotch tape” technique to separate single-layer graphene from bulk graphene. Buckyballs (fullerenes), carbon nanotubes, and graphene all belong to a large family of carbon allotropes. Meanwhile, their structural differences make these nano-allotropes exhibit diverse but unique properties and great application potential. Carbon Nanomaterials Open Up New Opportunities For nearly forty years, carbon nanomaterials, such as fullerenes   (0D), carbon nanotubes ...

Earlier this month, the New York-based material supplier,   Alfa Chemistry,   announced the launch of three new  resin s  for ion exchange ch ro matogra phy applications , i.e., mixed bed resins, chelating resins, and adsorbent resins,  to its customers worldwide , encompassing not only individual scientists but also research labs and organizations. “ Previously, we released a comprehensive line of resin s  for ion exchange   ch ro matogra phy applications , which has been well-received by   global researchers. Among all varieties of  ion exchange resins , the catalyst resin, chromatographic media, color changing resin, inert resin, powder resin, radioactive treatment resin, strong acid cation resin, strong base anion resin, weak acid cation resin, and weak base anion resin, have shown significant popularity , ”   said the Marketing Chief of Alfa Chemistry. “ Meanwhile, we ’ve   also noticed that there are needs for  the develo...

Computational chemistry, a branch of chemistry that applies computer simulation to assist in solving chemical problems, is a heated topic in the modern scientific community. Possessing a powerful team of experts in chemistry, biology, mathematics, crystallography, and pharmacology, Alfa Chemistry focuses on combining the power of computational chemistry with a variety of research focuses on supporting Computer Aided Drug Design, Thermodynamic Calculation, Fluorescence Spectrum Prediction, and applications that accelerate novel drug discovery. “ In most cases, computational  simulations are initiated for the identification of targeting  sites on protein molecules that are most likely to bind to new drug molecule s, thus  creat ing  reaction  mechanism models  t hat   elucidate the  kinetic and thermodynamic  characteristics . Hence , the use of high-performance computing to solve problems and create simulations generally requires massive amoun...

Making use of expanded facilities   and advanced material characterization techniques , Alfa Chemistry   has ad de d  specialization   in designing and synthesizing a wide range of 2D materials   for researchers for universities, research institutions ,   and companies worldwide. In materials science, t wo-dimensional (2D) materials , also referred to as single-layer materials ,  are substances with a thickness of a few nanometers or less than that.   These materials are promising for applications in the field of   electronics, sensors, energy devices, photonics, optoelectronics, bio logy,   and ecology and thus remain the focus of research . It is always the goal of Alfa Chemistry   to provide   as many high-quality, reliable, and unique materials   as possible to all  of   its customers worldwide . After the release of  Alfa Chemistry’s   2D material   product line, the company is now widely ...

Lipids   are essential to many body functions and serve as the building blocks for living cells.   Alfa Chemistry has been an ISO 9001:2015 certified supplier of nearly all forms of lipids and fatty acids and continues to broaden its product lines   by adding phospholipids, modified lipids, and functionalized lipids.   These lipid  molecule s are recently added to the   already well-established collection of lipid families  of Alfa Chemistry   in the hope of bringing   more cost-efficient chemical solutions to  all its global customers . Phospholipids As the major component of the cellular membrane, phospholipids are known for their excellent biocompatibility   and  amphiphilicity. Meanwhile, this amphiphilicity endows  phospholipid molecules with self-assembling, emulsifying, and wetting characteristics , further consolidating   the role of  phospholipids in many applications,   such as  in the pharmac...