title: Unusual nanosized associates of carboxy-calix[4]resorcinarene and cetylpyridinium chloride: the macrocycle as a glue for surfactant micelles.
abstract: The association of cetylpyridinium chloride (CPC) micelles in the presence of octaacetated tetraphenyleneoxymethylcalix[4]resorcinarene (CR) leads to the formation of unusual spherical supramolecular nanoparticles (SNPs). Within the range of CR/CPC molar ratios from 10/1 to 1/10 (except for 1/8), CR, acting as a counterion, decreases the critical micelle concentration of CPC by one order of magnitude and leads to the formation of SNPs with an average hydrodynamic radius of 164 nm and an average zeta potential of -60 mV. The formation of SNPs was studied by NMR FT-PGSE and 2D NOESY, DLS, TEM, fluorimetry, and UV-Vis methods. The stability of SNPs at different temperatures and pH values and in the presence of electrolytes was investigated. The specificity of the interactions of the SNPs with substrates that were preferentially bound by a macrocycle or CPC micelle was studied. The enhancement of cation dye binding in the presence of SNPs is shown. The presented supramolecular system may serve as a nanocapsule for water-soluble and water-insoluble compounds.
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru and Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation.
authors.forename: Ju E
authors.identifier: http://orcid.org/0000-0002-0963-9076
authors.initials: JE
authors.lastname: Morozova
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru.
authors.forename: V V
authors.initials: VV
authors.lastname: Syakaev
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru and Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation.
authors.forename: Ya V
authors.initials: YV
authors.lastname: Shalaeva
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru and Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation.
authors.forename: A M
authors.initials: AM
authors.lastname: Ermakova
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru and Kazan National Research Technical University, K. Marx str. 10, 420111 Kazan, Russian Federation.
authors.forename: I R
authors.initials: IR
authors.lastname: Nizameev
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru.
authors.forename: M K
authors.initials: MK
authors.lastname: Kadirov
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru.
authors.forename: A D
authors.initials: AD
authors.lastname: Voloshina
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru.
authors.forename: V V
authors.initials: VV
authors.lastname: Zobov
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru and Kazan Federal University, Kremlevskaya st. 18, 420008 Kazan, Russian Federation.
authors.forename: I S
authors.initials: IS
authors.lastname: Antipin
authors.affiliation: A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Science, Arbuzov str. 8, 420088 Kazan, Russian Federation. moroz@iopc.ru.
authors.forename: A I
authors.initials: AI
authors.lastname: Konovalov