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Cyclodextrins in Polymer Synthesis: Photoinitiated Free‐Radical Polymerization of N ‐Isopropylacrylamide in Water Initiated by a Methylated β ‐Cyclodextrin/2‐Hydroxy‐2‐methyl‐1‐phenylpropan‐1‐one Host/Guest Complex
Author(s) -
Alupei Iulian Corneliu,
Alupei Valentina,
Ritter Helmut
Publication year - 2002
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20020101)23:1<55::aid-marc55>3.0.co;2-i
Subject(s) - cyclodextrin , radical polymerization , poly(n isopropylacrylamide) , polymer chemistry , polymerization , polymer , chemistry , organic chemistry , copolymer
Methylated β ‐cyclodextrin (Me‐ β ‐CD) was used to complex a free‐radical photoinitiator, 2‐hydroxy‐2‐methyl‐1‐phenylpropan‐1‐one ( 1 ), yielding the water‐soluble 1 : 1 host/guest complex 1 a . The structure of complex 1 a was verified by means of IR, UV/vis and 1 H NMR spectroscopy. The influence of Me‐ β ‐CD as the host on the photopolymerization kinetics of N ‐isopropylacrylamide was studied. Compared to the photopolymerization carried out under nearly identical conditions but without cyclodextrin, an increase in the polymerization rate was registered in the presence of complex 1 a .