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Synthetic polyion-counterion transport systems in polymersomes and gels

Montenegro, J. and Braun, J. and Fischer-Onaca, O. and Meier, W. and Matile, S.. (2011) Synthetic polyion-counterion transport systems in polymersomes and gels. Organic and Biomolecular Chemistry, 9 (19). pp. 6623-6628.

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Official URL: http://edoc.unibas.ch/dok/A6001621

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Abstract

Transport across the membranes of polymersomes remains difficult in part due to the great thickness of the polymer bilayers. Here, we report that dynamic polyion-counterion transport systems are active in fluorogenic polymersomes composed of poly(dimethylsiloxane)-b-poly(2-methyloxazoline) (PDMS-PMOXA). These results suggest that counterion-activated calf-thymus DNA can act as cation carrier that moves not only across lipid bilayer and bulk chloroform membranes but also across the "plastic" membranes of polymersomes. Compared to egg yolk phosophatidylcholine (EYPC) lipsosomes, activities and activator scope in PDMS-PMOXA polymersomes are clearly reduced. Embedded in agar gel matrices, fluorogenic PDMS-PMOXA polymersomes respond reliably to polyion-counterion transporters, with high contrast, high stability and preserved selectivity. Compared to standard EYPC liposomes, it cannot be said that PDMS-PMOXA polymersomes are better. However, they are different, and this difference could be interesting for the development of sensing devices.
Faculties and Departments:05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Chemie > Chemie > Makromolekulare Chemie (Meier)
UniBasel Contributors:Meier, Wolfgang P.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Royal Society of Chemistry
ISSN:1477-0520
e-ISSN:1477-0539
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:04 Jun 2018 12:51
Deposited On:08 Nov 2012 16:10

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