Summary: Generation‐4 poly(amidoamine) dendrimers (G4‐PAMAM) were cross‐linked using gluteraldehyde to obtain aldehyde‐activated G4‐PAMAM and cross‐linked G4‐PAMAM, termed pre‐megamers, which were grafted with octadecylamine (ODA) in chloroform (CHCl3). Statistical megamer morphologies and particles were prepared by an emulsification solvent‐evaporation method using an ODA‐premegamer/CHCl3 solution, surfactant, and water. Physicochemical characterization of the premegamers and megamers by various spectroscopic and microscopic techniques demonstrated their formation and properties useful in diagnostic and chromatographic applications.
Formation of pre‐megamers and megamers and their transmission electron microscopy images. 相似文献
Certain generalizations of Sister Celine's polynomials are given which include most of the known polynomials as their special cases. Besides, generating functions and integral representations of these generalized polynomials are derived and a relation between generalized Laguerre polynomials and generalized Bateman's polynomials is established. 相似文献
Journal of Solid State Electrochemistry - While Li transport in Si is well understood, little is known about Na transport, despite Si being considered a potential anode material for the upcoming... 相似文献
Post-Ugi modifications offer a great tool to construct functionalized heterocycles in an atom-economic manner. Using this approach, we have constructed highly functionalized azaspiro tricyclic scaffolds that involve Ugi condensation and ipso-cyclization followed by aza-Michael ring closures. Herein, we present a detailed account of aza-Michael cyclizations with respect to substrate scope and limitations, along with new methods to prepare novel azaspiro tricyclic scaffolds. 相似文献
