Yilmaz, AydanYilmaz, ElifYilmaz, MustafaBartsch, Richard A.2020-03-262020-03-2620070143-72081873-3743https://dx.doi.org/10.1016/j.dyepig.2006.01.011https://hdl.handle.net/20.500.12395/21575A calix[4]arene-based oligomer 5 and a P-cyclodextrin polymer 6 were synthesized by the condensation of p-tert-butylcalix[4]arene and beta-cyclodextrin, respectively, with hexamethylene diisocyanate. In their batch sorption of selected azo dyes, the beta-cyclodextrin polymer 6 was found to be a better azo dye sorbent than the p-tert-butylcalix[4]arene-based oligomer 5. In addition, oligomer 4 containing pendant calix[4]arene units with crown-6 functionalities on the lower rim was synthesized and its complexation of the azo dyes was investigated by liquid-liquid extraction. The calix[4]crown-6 oligomer 4 showed the highest affinity for the azo dyes. (c) 2006 Elsevier Ltd. All rights reserved.en10.1016/j.dyepig.2006.01.011info:eu-repo/semantics/closedAccessbeta-cyclodextrincalix[4]arene oligomerazo dyecalix[4]crown-6Article7415459Q1WOS:000244165500009Q1