Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 78-50-2, is researched, Molecular C24H51OP, about Influence of polystyrene ligand length on the spatial arrangement of quantum dots within PS-b-PEO micelles, the main research direction is polystyrene length cadmium sulfide selenide quantum dot spatial arrangement; ethylene oxide styrene block polymer micelle optical property.Related Products of 78-50-2.
The spatial arrangement of functional inorganic nanoparticles within polymer micelles is essential to the nanocomposite performances. Polystyrene (PS) of different lengths (PS24, PS91 and PS163) are grafted onto the surface of fluorescent CdSe/CdS core/shell quantum dots (QDs) through ligand exchange procedure, and their grafting d. decreases from 2.80 to 0.54, 0.18 chains/nm2 with increase of PS ligand length. Under two competing effects, i.e. wettability between QDs and block copolymer PS120-b-PEO318 and the attraction between QDs, the precise location of PS-capped QDs inside the co-assemblies can be regulated by the length of PS ligands. The low grafting d. of PS163 on the QD surface cannot overcome the van der Waals and hydrophobic attraction between QDs and cause the local aggregation of QDs within the co-assemblies. On the contrary, short PS24 ligands with high grafting d. can avoid QD aggregation, but exhibit poor wettability with copolymer, which confines the QDs in the central portion of the core of co-assemblies. PS91 ligands with medium grafting d. have good wettability with block copolymer and facilitate the homogeneous distribution of QDs inside the cores of co-assemblies. Furthermore, the influence of stirring time and water addition rate on the structure of co-assemblies is also investigated.
Different reactions of this compound(Tri-n-octylphosphine Oxide)Related Products of 78-50-2 require different conditions, so the reaction conditions are very important.
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method