A number of procedures are currently available to encapsulate and solubilize hydrophobic semiconductor Quantum Dots (QDs) for biological applications. Most of these procedures are based on the use of small-molecule coordinating ligands, amphiphilic polymers, or amphiphilic lipids. However, it is still not clear how these different surface coating molecules affect the optical, colloidal, and che...

The present study evaluated a new concept of combined scaffolds as a promising bone replacement material for patients with a bone tumour or bone metastasis. The scaffolds were composed of hydroxyapatite doped with selenium ions and a biodegradable polymer (linear or branched), and contained an active substance-bisphosphonate. For this purpose, a series of biodegradable polyesters were synthesiz...

In this work, water triggered dynamic catechol-Fe3+ coordinate bonds are revealed and studied at atomic, molecular and macroscopic levels using Mössbauer spectroscopy, rheological analysis, etc. DOPA-iron complexation is found to be dynamic in the presence of water, and this dynamic manner is immobilized after removing water. Accordingly, a water saturated lipophilic polymer containing catechol...

Degradable polymers based on polyanhydrides are essentially polymeric prodrugs; the polymers hydrolytically degrade into salicylic acid, just as aspirin hydrolyzes into salicylic acid upon ingestion. This talk describes medical applications where the polymer serves as a temporary barrier that degrades into therapeutically active molecules such as non-steroidal antiinflammatory drugs (NSAIDs) an...

Nickel-based ethylene polymerization catalysts have unique features, being able to produce macromolecules with a variable content of branches, resulting in polymers ranging from semicrystalline plastics elastomers hyperbranched amorphous waxes and oils. In addition Brookhart’s α-diimine catalysts, iminopyridine Ni(II) complexes are among the most investigated systems. We report that bearing ary...

Polyethyleneimine (PEI) is a common polymer used in many industrial applications and research, especially surface chemistry. It available wide range of molecular weights different degrees branching. classified as linear or branched sometimes the term hyperbranched also used. This description, however, quite rough, which limits possibility to correlate structure PEI its properties. The aim this ...