pH-triggered release of materials from single-walled carbon nanotubes using dimethylamino-functionalized fullerenes as removable “corks”
✍ Scribed by Patraporn Luksirikul; Belén Ballesteros; Gerard Tobias; Mark G. Moloney; Malcolm L.H. Green
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 426 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
Dimethylamino-functionalized fullerenes (pf-C 60 ) have been used as removable ''corks'' at the openings of filled single-walled carbon nanotubes (SWCNTs). In a proof-of-principle study, SWCNTs have been filled with copper acetate or uranyl acetate, and these encapsulated materials then ''corked'' with pf-C 60 . The use of pf-C 60 as ''corks'' allows the removal of the large amount of external acetate present after the filling step and a pH-triggered release of the encapsulated materials. A pH-sensitive discharge of the cargo would be of interest, for instance, in drug delivery systems.