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Metallo‐ and metalloido‐micellane ™ derivatives: Incorporation of metals and nonmetals within unimolecular superstructures
Author(s) -
Newkome George R.,
Moorefield Charles N.
Publication year - 1994
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19940770110
Subject(s) - amide , alkyne , macromolecule , chemistry , reactivity (psychology) , monomer , polymer chemistry , hydrodynamic radius , combinatorial chemistry , organic chemistry , copolymer , catalysis , medicine , biochemistry , polymer , alternative medicine , pathology
Cascade polymeric architecture possessing internal functionalities was employed for the preparation of metallo‐ and nonmetallo‐Micellane TM derivatives. Specifically, tetra‐ and dodeca‐o‐carborane superclusters, were obtained via treatment of the corresponding 1 st and 2 nd generation tetra‐ and dodeca‐alkyne, hydrocarbon cascade (Micellane TM ) derivatives with decaborane. Reaction of the same polyalkyne dendritic precursors with Co 2 (CO) 8 afforded the benzyl protected, Cobaltomicellanes TM possessing 12 and 24 internal metal centers, respectively. Control of amide‐based, carboxylic acid terminated macromolecular hydrodynamic radius via changes in solution pH was demonstrated. Heterocascade syntheses employing amide and metalligand monomer connectivity were accomplished. The relation of interior cascade reactivity to macromolecular “void volume” was examined.