Abstract
Pendant fullerene polymers were prepared by attaching methano[60]fullerene carboxylic acid (MFCA) and methano[60]fullerene phenylpropyl carboxylic acid (MFPCA) to linear poly(propionylethylenimine-co-ethylenimine) (PPEI-EI) via amide linkages in carbodiimide-catalyzed coupling reactions. The pendant MFCA-PPEI and MFPCA-PPEI polymers, which were characterized using NMR, gel permeation chromatography, FT-IR, and other instrumental methods, most likely have a charm bracelet type structure without significant cross-linking. MFCA and MFPCA were also coupled with diethylamine in the same carbodiimide-catalyzed reactions, and the methano[60]fullerene amides thus obtained were used as monomeric model compounds for the pendant polymers. UV-vis absorption spectra of the polymer-bound fullerenes, though broader, retain the characteristic features observed in monomeric methano[60]fullerene derivatives. The pendant MFCA-PPEI and MFPCA-PPEI are highly water-soluble, with the equivalent aqueous solubilities of the polymer-bound fullerene cages significantly higher than that of the parent [60]fullerene in room-temperature toluene. Thus, the preparation of pendant fullerene polymers represents an effective approach for introducing fullerene cages into an aqueous solution or hydrophilic environment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.