Current Organic Chemistry - Volume 9, Issue 11, 2005

I have been invited to provide the present issue of Current Organic Chemistry by Professor Stanislaw Penczek, the Executive Guest Editor of COC. The papers focus on chemical reactions leading to nano- and microparticles with tailored properties allowing for using these objects as useful tools for various applications, in particular in the area of medicine. Each particle consists of at least two zones - an interior and periphery. Sele Read More

Dendritic macromolecules or “dendrimers” are artificial nanoparticles with precisely defined covalent macromolecular architecture and broad application potential. Their discovery, construction strategies, postsynthetic peripheral modifications, surface-related properties and selected potential applications are the subject of this review. The standard dendrimer is characterized by three distinct zones, the periphery, the i Read More

Nanocrystallinity is an important phenomenon in natural and synthetic systems. Whether an inorganic or organic material, the mechanism for confinement of crystal growth within nanoscopic dimensions usually employs an organic mediator, which adsorbs to and stabilizes the growing crystal. Following an introduction to nanocrystalline biomaterials and inorganic materials, this review focuses upon the preparation and s Read More

Functionalized polymer colloids were synthesized by emulsion polymerization having specific ionic groups on surface. In this review, a comprehensive study on the synthesis of functionalized polymer colloids is carried out. Monodisperse polymer colloids with acetal, aldehyde, chloromethyl, and amino functionalities were synthesized by a multi-step emulsion polymerization process. In the first step, the seeds w Read More

Because of their availability in discrete sizes and the relative ease with which they can be derivatized and characterized, polymeric nanoparticles have become important model surfaces in bioanalytical work. One finds that increased reaction rates and reduced steric hindrance are the results when proteins or other reactive macromolecules are attached to ever smaller particulate carriers in the sub-micron size range. The intr Read More

Narrowly size-distributed functionalized magnetic emulsions with diameters between 200 and 300 nm bearing reactive amine or carboxylic groups were prepared respectively via single adsorption or layer-by-layer adsorption process. The colloidal stability of the functionalized magnetic emulsion was related to the polymer adsorbed amount and to the adsorption methodology. The single adsorption of poly(ethyleneimine) onto neg Read More