Cation-sensitive compartmentalization in metallacarborane containing polymer nanoparticles

0457603 - ÚMCH 2017 RIV GB eng J - Článek v odborném periodiku
Ďorďovič, V. - Uchman, M. - Reza, M. - Ruokolainen, J. - Zhigunov, Alexander - Ivankov, O. I. - Matějíček, P.
Cation-sensitive compartmentalization in metallacarborane containing polymer nanoparticles.
RSC Advances. Roč. 6, č. 12 (2016), s. 9884-9892. E-ISSN 2046-2069
Grant CEP: GA ČR(CZ) GA14-14608S
Institucionální podpora: RVO:61389013
Klíčová slova: polymer nanoparticles * metallacarborane * double-hydrophilic block copolymer
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 3.108, rok: 2016

Alkaline cations (Li+, Na+ and K+) are introduced as agents suitable to control compartmentalization in metallacarborane-rich nanoparticles of double-hydrophilic block copolymer poly(ethylene oxide)-block-poly(2-alkyloxazoline), PEO–POX. Interaction of the metallacarborane (cobalt bis(dicarbollide) anion) with PEO–POX is based mainly on dihydrogen bonding between metallacarborane boron clusters and the polymer backbone resulting in compact nanoparticles. However, the cations are a crucial factor as to whether interaction with PEO or POX segments is preferred. Changes in the bulk concentration of alkaline cations can thus provoke changes in the inner structure of polymeric nanoparticles, which is accompanied by exchange of boron clusters and alkaline cations like Li+. Because of the biomedical importance of metallacarboranes, their conjugates and also lithium salts, the hybrid nanoparticles can act as stimuli-responsive systems for drug delivery.
Trvalý link: http://hdl.handle.net/11104/0258009