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Amphiphilic O-functionalized calix[4]resocinarenes with tunable structural behavior

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Title
Amphiphilic O-functionalized calix[4]resocinarenes with tunable structural behavior
Author(s)
Pashirova, Tatiana N.; Gibadullina, Elmira M.; Burilov, Alexander R.; Kashapov, Ruslan R.; Zhiltsova, Elena P.; Syakaev, Victor V.; Habicher, Wolf D.; Ruemmeli, Mark H.; Latypov, Shamil K.; Konovalov, Alexander I.; Zakharova, Lucia Ya.
Publication Date
2014-02
Journal
RSC ADVANCES, v.4, no.20, pp.9912 - 9919
Publisher
ROYAL SOC CHEMISTRY
Abstract
Novel amphiphilic calix[4]resorcinarenes oxyethylated at the upper rim and alkylated at the lower rim (CR-CnH2n+1, here n is the number of carbon atoms in the alkyl substituent; n = 2,5,7,8,9,11) were synthesized, and their association behavior in water-organic solvents was explored. Surface properties and the association behavior of CRs were shown to be strongly controlled by their structure and the nature of the co-solvent. Solely CR-C5H11 demonstrates surface activity in the mixed water-DMF and water-DMSO solutions, while no surface activity occurs in the water-THF mixture. The DLS measurements revealed a very low concentration threshold of the aggregation (around 0.01 mM) for the CR series including surface inactive compounds. In water-DMF and water-DMSO solutions the CRs of low hydrophobicity were shown to associate through an open model with the formation of large aggregates of 300-400 nm, while more hydrophobic CRs can associate through a closed model and form rather small micelle-like aggregates of 10 to 20 nm. © 2014 The Royal Society of Chemistry.
URI
https://pr.ibs.re.kr/handle/8788114/1172
ISSN
2046-2069
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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