Next, partial quaternization of the tertiaryamino-functional POSS was achieved using an alkyl halide
to produce the Q-POSS.
5 of this source for the class of alkyl halides
, mercaptans, sulphides and disulphides.
ATRP is initiated by alkyl halides
; therefore, any polymer that has a sufficiently active alkyl halide
end-group could initiate ATRP to afford block copolymers.
Currently, most of the metal-mediated reactions involve allylation or propargylation, and more recently, secondary alkyl halides
Ferrocene is known to readily form charge transfer complexes (CTCs) with alkyl halides
, as evidenced by the appearance of a feature indicative of a charge transfer complex at ~310 nm; subsequently, upon irradiation, the complex dissociates into the ferrocenium ion, chloride ion, and alkyl radical (Fig.
The only notable omission is that there is no treatment of alkyl halides
as ligands, even though many complexes are known in which C-X groups are bonded to metal ions (especially when X = F).