Ion Transport Through Polyelectrolyte Multilayers

被引：10

作者：

Carregal-Romero, Susana ^{[1
,2
]}

Rinklin, Philipp ^{[3
]}

Schulze, Susanne ^{[4
]}

Schaefer, Martin ^{[4
]}

Ott, Andrea ^{[1
]}

Huehn, Dominik ^{[1
]}

Yu, Xiang ^{[1
]}

Wolfrum, Bernhard ^{[3
]}

Weitzel, Karl-Michael ^{[4
]}

Parak, Wolfgang J. ^{[1
,5
]}

机构：

[1] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany

[2] Ctr Andaluz Nanomed & Biotecnol, BIONAND, Malaga, Spain

[3] Forschungszentrum Julich, JARA FIT, Inst Bioelect PGI ICS 8 8, D-52425 Julich, Germany

[4] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany

[5] CIC Biomagune, San Sebastian, Spain

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2013年 / 34卷 / 23-24期

关键词：

SOLID POLYMER ELECTROLYTE; PULSED-FIELD-GRADIENT; DIFFUSION-COEFFICIENTS; DONNAN EQUILIBRIUM; CELLULAR UPTAKE; CAPSULES; MICROCAPSULES; PH; PERMEABILITY; TEMPERATURE;

D O I：

10.1002/marc.201300571

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyelectrolyte multilayer (PEM) films and capsules loaded with ion-sensitive fluorophores can be used as ion-sensors for many applications including measurements of intracellular ion concentration. Previous studies have shown the influence of the PEM films/shells on the specific response of encapsulated ion-sensitive fluorophores. PEM shells are considered as semipermeable barriers between the environment and the encapsulated fluorophores. Parameters such as the time response of the encapsulated sensor can be affected by the porosity and charge of the PEM shell. In this study, the time response of an encapsulated pH-sensitive fluorophore towards pH changes in the surrounding environment is investigated. Furthermore, the conductance of PEM films for potassium ions is determined.

引用

页码：1820 / 1826

页数：7

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