Synthesis and characterization of poly(ethyleneimine) dendrimers

Improvement of CO2 capture by graphite oxide in presence of polyethylenimine

“…There are two types of polyethylenimine, namely linear and branched. Linear polyethylenimine contains only secondary amine groups, but branched polyethylenimine contains primary, secondary, and tertiary amine groups [30,31]. We used branched polyethylenimine, because mixed amines have a range of properties [32], and therefore, branched polyethylenimine is expected to improve CO 2 adsorption.…”

Fluorescence Investigations of Oxygen‐Doped Simple Amine Compared with Fluorescent PAMAM Dendrimer

“…[1][2][3][4][5][6][7][8] Bard's group [1] claimed that the oxidation of hydroxyl end-groups on poly(amido amine) (PAMAM) dendrimers was the main contribution to the special fluorescence phenomenon. However, in addition to PAMAM dendrimers with different endgroups, [2,5] the authors' group [5,7] reported that commercially-available poly(propyleneimine) (PPI) dendrimer and synthesized poly(ethyleneimine) (PEI) dendrimer, containing only alkyl amine units in the dendritic structure, can also emit a blue fluorescence after similar air treatment. Although some reports indicated a pH dependency, such that acidic conditions lead to a higher emission intensity than basic conditions, [2,5,6] the photoluminescence of polysiloxane coated by PAMAM dendron side chains was intensified in crowded circumstances under alkaline condition, rather than in less-crowded circumstances under acidic conditions.…”

Interaction of single-walled carbon nanotubes with poly(propyl ether imine) dendrimers

“…Such a property is currently known only for a few dendrimers and hyperbranched polymers. [38][39][40][41][42][43][44][45][46] Coupled with extremely reduced toxicities of PETIM dendrimers, 35,36 their inherent fluorescence is a useful tool to monitor interactions with ligands and receptors. These structural and functional features prompted the present study of the interaction of native, unmodified third generation PETIM dendrimer with SWNTs.…”