Incorporation of gold nanoparticles into Langmuir-Blodgett films of polyaniline and montmorillonite for enhanced detection of metallic ions

Barros, Anerise de; Constantino, Carlos J. L.; Bortoleto, J. R. R.; Cruz, Nilson Cristino da; Ferreira, Marystela

doi:10.1016/j.snb.2016.06.022

Cited by 21 publications

(13 citation statements)

References 45 publications

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“…The Langmuir-Blodgett technique is an important method to produce macroscopic materials organized on the molecular scale [1][2][3][4][5]. This approach allows amphiphilic molecules to be oriented at the air-water interface and then transferred sequentially onto a solid support [6][7][8][9][10][11][12][13][14][15].…”

Section: Preparation and Self-assembly Of Some Functionalized Lb Filmsmentioning

confidence: 99%

“…In addition, some useful analytical techniques and synthetic treatments applied in supramolecular self-assembly field have been highlighted and analyzed. In the present chapter, we summarize main work contributions in recent years in two parts: (1) preparation and self-assembly of some functionalized LB films and (2) preparation and self-assembly of some functionalized supramolecular gels.…”

Section: Introductionmentioning

confidence: 99%

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Advances in Design and Self-Assembly of Functionalized LB Films and Supramolecular Gels

Jiao¹,

Xing²,

Ma³

et al. 2016

Advances in Colloid Science

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The recent progress in functionalized LB ilms and supramolecular gels varies and occupies various ields. Self-assembly technique is playing an important role in preparing well-deined multilevel nanostructures and the functionalized nanomaterials with the designed and controlled properties. In this chapter, various kinds of functionalized LB ilms and supramolecular gels, including gold nanoparticles, inorganicorganic hybrid composites, and graphene oxide nanocomposites, have been demonstrated and analyzed. We show main research contributions in recent years in two sections preparation and self-assembly of some functionalized LB ilms and preparation and self-assembly of some functionalized supramolecular gels. The above research work may give the potential perspective for the design and preparation of new selfassembly nanomaterials. Future research on preparation of LB ilms and supramolecular gels will depend on the novel applications and special nanostructures in order to produce novel functional nanomaterials and devices.Keywords: LB ilm, supramolecular gel, self-assembly, nanomaterials, nanostructures, properties . IntroductionThe recent progress in functionalized LB ilms and supramolecular gels is varied and occupies various ields. It is well known that the self-assembly techniques demonstrate important and crucial role to prepare various functionalized nanostructures and nanomaterials with the preferred properties. In comparison with the conventional self-assembly process of amphiphiles in bulk or at interfaces, the self-assembly process of inorganic-organic hybrids, © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.© 2017 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.nanoparticles and colloidal microspheres, and supramolecular nanostructures show special properties, especially in preparing complicated nanocomposites or nanomaterials.In the recent reports in our groups, some systems, including LB ilms and supramolecular gels, have been designed and characterized. In addition, some useful analytical techniques and synthetic treatments applied in supramolecular self-assembly ield have been highlighted and analyzed. In the present chapter, we summarize main work contributions in recent years in two parts preparation and self-assembly of some functionalized LB ilms and preparation and self-assembly of some functionalized supramolecular gels. . Preparation and self-assembly of some functionalized LB ilmsThe Langmuir-Blodget technique is an important method to produce macroscopic materials organized on the molecular scale [ -]....

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Section: Preparation and Self-assembly Of Some Functionalized Lb Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advances in Design and Self-Assembly of Functionalized LB Films and Supramolecular Gels

Jiao¹,

Xing²,

Ma³

et al. 2016

Advances in Colloid Science

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“…Langmuir‐Blodgett (LB) technique is an elegant and efficient route to organize amphiphilic molecules at the air‐water interface with controlled packing density, and transfer as ultrathin film on to suitable substrates. Most of the reports on LB films of PANI involve the pre‐fabricated polymer spread at the interface together with inert amphiphiles;, similar is the case with PANI−Au ,. A more targeted approach to the synthesis at the air‐water interface would involve polymerization carried out in the Langmuir film under surface pressure control.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the reports on LB films of PANI involve the pre-fabricated polymer spread at the interface together with inert amphiphiles; [22,23] similar is the case with PANIÀAu. [24,25] A more targeted approach to the synthesis at the air-water interface would involve polymerization carried out in the Langmuir film under surface pressure control. Penta and hexadecyl anilines with the alkyl chains on the benzene ring have been investigated in this context.…”

Section: Introductionmentioning

confidence: 99%

Poly(N‐octadecylaniline) Synthesized at the Air‐Water Interface: Aligned Nanofibers and Gold Nanocomposite Assembly via the Langmuir‐Blodgett Technique

Maganti

Radhakrishnan

2017

ChemistrySelect

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Morphological and organizational control afforded by polymerization at the air‐water interface, and the unique structural features of poly(N‐alkylaniline)s are exploited in the fabrication of the polymer and polymer‐nanoparticle composites in micro and nanofiber (ultrathin film) forms. While ammonium peroxodisulfate as the oxidizer provides poly(N‐octadecylaniline) (PNOA), chloroauric acid leads to the nanocomposite, PNOA_Au. Experiments using relatively larger amounts of the monomer in a petri‐dish produced PNOA and PNOA_Au microfibers that could be characterized using spectroscopy, microscopy and electrical conductivity measurement. Polymerization in monolayer Langmuir films under surface pressure control in a Langmuir‐Blodgett (LB) trough, allowed the kinetics to be monitored, and ultrathin films of PNOA and PNOA_Au to be fabricated. The PNOA LB film shows nanofibers with twists, turns and helical segments, aligned parallel to the direction of monolayer compression; a computational model suggests a helical chain structure for PNOA formed at the interface. The polymer nanofibers are decorated with Au nanoparticles in the PNOA_Au film.

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“…Recently, conducting polymers for modifying electrodes to detect trace of metal ions have received great deal of interest. Various examples for such detections are: polyaniline for detection of Pb 2+ , Cd 2+ and Pb 2+ , Zn 2+ , Cd 2+ , and Pb 2+ , Cd 2+ , Pb 2+ and Cu 2+ ions; polypyrrole for detection of Pb 2+ , Cu 2+ , Hg 2+ ions; poly(1,8‐diaminonaphthalene) for Se 4+ , Hg 2+ , Cu 2+ , Cd 2+ and Pb 2+ ions; poly(1,5‐diaminonaphthalene) for detection of Cd 2+ and Pb 2+ ions ; poly(vinylferrocenium) for detection of Hg 2+ ions ; poly(3‐hexylthiophene) for detection of Hg 2+ , ions; poly(3,4‐ethylenedioxythiophene) for detection of Cd 2+ , Zn 2+ , Pb 2+ , As 3+ , Cu 2+ , Hg 2+ ions; poly( N,N′ ‐ethylene bis ( N ‐((3‐(pyrrole‐1‐yl)propyl) carbamoyl)methyl)‐glycine) for Cu 2+ , Pb 2+ and Cd 2+ ions… Among conducting polymers, polyaniline (PANi) has been studied extensively due to its low cost monomer, the easy deposition of thin films, high conductivity, good environmental stability, and ability to remove some kinds of metal ions from aqueous solution as Hg 2+ . In this regard, Zhang et al.…”

Section: Introductionmentioning

confidence: 99%

Sodium Dodecyl Sulfate Doped Polyaniline for Enhancing the Electrochemical Sensitivity of Mercury Ions

et al. 2016

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Polyaniline (PANi) was electro‐synthesized on the surface of screen‐printed carbon electrodes in the presence of sodium dodecyl sulfate (SDS) as a dopant. The complex of aniline and SDS created a conductive (PANi‐SDS) film at lower aniline concentration. The PANi‐SDS film contained negative charge due to the anionic head of SDS. The PANi‐SDS modified electrode was integrated into a poly(dimethylsiloxane) microfluidic chip as an electrochemical sensor for mercury detection. The presence of SDS in the polyaniline film enhanced the possibility of mercury ions uptake, and therefore, increased the peak current of square wave anodic stripping in the mercury detection. The mercury sensor exhibited a dynamic range from 6 to 35 nM with detection limit of 2.4 nM.

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Incorporation of gold nanoparticles into Langmuir-Blodgett films of polyaniline and montmorillonite for enhanced detection of metallic ions

Cited by 21 publications

References 45 publications

Advances in Design and Self-Assembly of Functionalized LB Films and Supramolecular Gels

Advances in Design and Self-Assembly of Functionalized LB Films and Supramolecular Gels

Poly(N‐octadecylaniline) Synthesized at the Air‐Water Interface: Aligned Nanofibers and Gold Nanocomposite Assembly via the Langmuir‐Blodgett Technique

Sodium Dodecyl Sulfate Doped Polyaniline for Enhancing the Electrochemical Sensitivity of Mercury Ions

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