کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1667028 1008838 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology and electrochemical properties of amphiphilic viologen functionalized multiwalled carbon nanotube hybrids in Langmuir–Blodgett films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Morphology and electrochemical properties of amphiphilic viologen functionalized multiwalled carbon nanotube hybrids in Langmuir–Blodgett films
چکیده انگلیسی

Amphiphilic viologens were electrostatically adsorbed on the surface of multiwalled carbon nanotubes (MWCNT) to form viologen–MWCNT hybrids, in which the content of viologens was about 5–10% in weight. Although both viologens and MWCNT hardly dispersed in the water-insoluble organic solvents, the as-prepared viologen–MWCNT hybrids were well dispersed in them with a strong long-term stability, the features of which provided a possibility to prepare their insoluble monolayers at the air–water interface. The surface pressure–area isotherms of these hybrids revealed that they could form stable monolayers, which were transferred on the substrate surfaces by the Langmuir–Blodgett (LB) method. Morphologies of the LB films were characterized by using scanning electron microscopy and atomic force microscopy, the images of which revealed the formation of network two- or three-dimensional films of the functionalized MWCNT. Cyclic voltammograms of the LB films revealed one or two couples of one electron transfer process corresponding to the viologen–MWCNT hybrids with the cathodic and anodic potentials closely related to the alkyl chains of the viologens.


► Amphiphilic viologen–carbon nanotube hybrids were prepared.
► The as-prepared hybrids were well dispersed in organic solvents.
► Two- and three-dimensional network multilayers were constructed and characterized.
► Langmuir–Blodgett films of hybrids showed reversible redox behaviors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 520, Issue 23, 30 September 2012, Pages 6994–7001
نویسندگان
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