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Molecular recognition: polymers comprising isomeric meta ‐/ para ‐isopropylphenol and N ‐isopropylacrylamide and their supramolecular complexes with methylated β‐cyclodextrin
Author(s) -
Gingter Sabrina,
van Sloun Claudia,
Ritter Helmut
Publication year - 2012
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4208
Subject(s) - supramolecular chemistry , cyclodextrin , polymer chemistry , isothermal titration calorimetry , polymer , copolymer , poly(n isopropylacrylamide) , monomer , titration , chemistry , molecular recognition , dynamic light scattering , materials science , molecule , organic chemistry , nanoparticle , nanotechnology
Abstract We describe the molecular recognition of polymeric attached isomers meta ‐isopropylphenol and para ‐isopropylphenol, respectively, in a copolymer of N ‐isopropylacrylamide (NIPAAm) by use of randomly methylated β‐cyclodextrin (RAMEB‐CD). The acrylic monomers 4‐ and 3‐isopropylphenylacrylate were synthesized and radically copolymerized with NIPAAm yielding the corresponding polymers. The supramolecular structures resulting from complexation with RAMEB‐CD were characterized using dynamic light scattering, turbidity, NMR spectroscopy and isothermal titration. We found differences in binding constant, mean coil size and cloud point as a result of different complexations of the mentioned polymer‐bound isomers with RAMEB‐CD. Copyright © 2012 Society of Chemical Industry