Impact of Polyelectrolyte Multilayers on the Ionic Current Rectification of Conical Nanopores

被引：29
作者：
Ma, Tianji [1 ]
Gaigalas, Paulius [1 ,2 ]
Lepoitevin, Mathilde [1 ]
Plikusiene, Ieva [2 ,3 ]
Bechelany, Mikhael [1 ]
Janot, Jean-Marc [1 ]
Balanzat, Emmanuel [4 ]
Balme, Sebastien [1 ]
机构：
[1] Inst Europeen Membranes, UM ENSM CNRS UMR5635, Pl Eugene Bataillon, F-34095 Montpellier 5, France
[2] Vilnius Univ, Fac Chem & Geosci, Naugarduko St 24, LT-01513 Vilnius, Lithuania
[3] Ctr Phys Sci & Technol, Dept Mat Sci & Elect Engn, Sauletekio Ave 3, LT-02300 Vilnius, Lithuania
[4] Ctr Rech Ions Mat & Photon, CEA CNRS ENSICAEN UMR6252, 6 Blvd Marechal Juin, F-14050 Caen 4, France
来源：
LANGMUIR | 2018年 / 34卷 / 11期
关键词：
SOLID-STATE NANOPORES; NANOFLUIDIC DIODE; SINGLE-NANOPORE; TRANSPORT; NANOTUBE; FUNCTIONALIZATION; CONDUCTION; MEMBRANES; CHANNELS;
D O I：
10.1021/acs.langmuir.8b00222
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Single conical nanopores were functionalised layer by layer with weak polyelectrolytes. We studied their influence on the ionic diode properties We have considered different couples of polyelectrolytes: poly-L-lysine/poly(acrylic acid) and poly(ethyleneimine)/poly(acrylic acid) as well as the influence of cross-linking. The results show that the nanopores decorated with poly(ethyleneimine)/poly(acrylic acid) exhibit an interesting behavior. Indeed, at pH 3, the nanopore is open only at the low salt concentration, while at pH 7, it is already open. The nanopores functionalized with poly-L-lysine/poly(acrylic acid) do not show an inversion of ionic transport properties with the pH as expected. After cross-linked to prevent large conformational changes, the ionic diode properties are dependent on the pH.
引用
收藏
页码：3405 / 3412
页数：8
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