Facile Syntheses of Cucurbit[6]uril-Anchored
Polymers
and Their Noncovalent Modification
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Abstract
The general strategy for facile synthesis of Cucurbit[6]uril-
(CB[6]-)
anchored polymers without the functionalization of CB[6] was presented.
The acrylamide as a typical monomer was used to synthesize a series
of CB[6]-anchored polyacrylamides (CB[6]-PAM) using potassium persulfateas
as initiator and oxidant. The CB[6]-PAM samples were characterized
by <sup>1</sup>H NMR, <sup>13</sup>C NMR, HMQC, FTIR, and TGA. It
was found that the composition and chain microstructure of CB[6]-PAM
polymers could be tunable by changing the content of potassium persulfate,
CB[6] and acrylamide. In addition, CB[6]-PAM could be assembled into
nanosized vesicles, which were confirmed by TEM, AFM, and SEM measurements.
By taking advantage of the exceptional binding affinity of the CB[6],
the CB[6]-PAM could be modified with butyl amine hydrochloride. The
result makes the CB[6]-anchored polymer potentially useful in many
applications. Furthermore, this synthetic approach could be extend
to CB[6]-anchored polymers with two different chains. As a typical
example, CB[6]-anchored poly(4-vinylbenzylamine hydrochloride salt)
and polyacrylamide was synthesized successfully