Dynamic and static light scattering studies on self-aggregation behavior of biodegradable amphiphilic poly(ethylene oxide)-poly[(R)-3-hydroxybutyrate]-poly(ethylene oxide) triblock copolymers in aqueous solution

Article Abstract:

The formation of polymeric micelles by two amphiphilic poly(ethylene oxide)-poly[(R)-3-hydroxybutyrate]-poly-(ethylene oxide) triblock copolymers was confirmed with fluorescence techniques and transmission electron microscopy. Dynamic light scattering analysis showed that the hydrodynamic radius of the monodistributed polymeric micelles increased with an increase in poly-(ethylene oxide) block length.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polyethylene, Usage, Transmission electron microscopes, Atomic properties, Copolymers

---

Toward the solution synthesis of the tetrahedral Au20 cluster

Article Abstract:

The observation in solution of tetrahedral Au20 cluster in coordination with eight PPh3 (Ph = phenyl) ligands is provided. It is theoretical observations suggest that large quantities of ligand-stabilized tetrahedral Au20 can be obtained, opening the door for exploring its anticipated novel chemical, optical, and catalytic properties.

Analysis, Observations, Ligands (Biochemistry), Chemical reactions, Chemical properties, Tetrahedra, Tetrahedrons

---

Laser ablation mass spectroscopy of pyrolyzed Koppers coal-tar pitch: a precursor for fullerenes and metallofullerenes

Article Abstract:

Issues concerning a laser ablation FT/ICR mass spectrometry study of Koppers coal-tar pitch pyrolysis residues are presented. This carbonaceous material potential as a very good precursor for fullerene and metallofullerene production.

Research, Carbon allotropes, Coal tar, Coal-tar

Similar abstracts:

• Abstracts: Surface-enhanced Raman scattering studies on aggregated silver nanoplates in aqueous solution. Dendron-like growth of silver nanoparticles using a water-soluble oligopeptide
• Abstracts: Self-assembly of a poly(ethylene oxide)/poly(propylene oxide) block copolymer (pluronic P104, (EO)27(PO)61(EO)27) in the presence of water and xylene
• Abstracts: Thermodynamic characterization of the interaction behavior of a hydrophobically modified polelectrolyte and oppositely charged surfactants in aqueous solution: Effect of surfactant alkyl chain length
• Abstracts: A critical evaluation of direct energy transfer as a tool for analysis of nanoscale morphologies in polymers. Application to block copolymer interfaces
• Abstracts: An x-ray absorption fine structure study of the sulfidation behavior of CoNaY prepared by ion exchange: the influence of physisorbed water and cobalt loading

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.