Palm tree- and dumbbell-like polymer architectures based on C-60

Citation
Y. Ederle et C. Mathis, Palm tree- and dumbbell-like polymer architectures based on C-60, MACROMOLEC, 32(3), 1999, pp. 554-558
Citations number
19
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULES
ISSN journal
00249297 → ACNP
Volume
32
Issue
3
Year of publication
1999
Pages
554 - 558
Database
ISI
SICI code
0024-9297(19990209)32:3<554:PTADPA>2.0.ZU;2-7
Abstract
By reacting 6 PSLi per C-60 molecule, fairly pure star-shaped polymers with six branches and six carbanions located on the fullerene core are obtained . Only one of these six carbanions is able to initiate the anionic polymeri zation of styrene or isoprene leading to well;defined palm tree-like archit ectures (PSa)(6)C60PSb or (PS)(6)C60PI. At its end, the out-growing chain b ears a carbanion that has been allowed to react with the coupling agents di bromo-p-xylene and dibromohexane to produce the dumbbell-like structures, ( PSa)(6)C60PSb-pX-PSbC60(PSa)(6) and (PS)(6)C60PI-Hex-PIC60(PS)(6). If C-60 itself is allowed to react with the "living" palm tree, a third fullerene m olecule is introduced in the center of the macromolecular architecture.