Morphology dependent ammonia sensing with 5-sulfosalicylic acid doped nanostructured polyaniline synthesized by several routes

Chatterjee, Krishanu; Dhara, Palash; Ganguly, Saibal; Kargupta, Kajari; Banerjee, Dipali

doi:10.1016/j.snb.2013.02.042

Cited by 27 publications

(15 citation statements)

References 42 publications

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“…5,6 Simple techniques such as spin coating, chemical vapour deposition, laser ablation, Langmuir-Blodgett (LB) film formation, plasma deposition and electrochemical reactions have been extensively used to prepare polymer-coated surfaces. 7 These techniques offer fairly thin films of polymers on almost any surfaces. However, lack of stability, durability, reproducibility and control over thickness are the main drawbacks associated with the above-mentioned methods.…”

Section: Introductionmentioning

confidence: 99%

Controlled decoration of the surface with macromolecules: polymerization on a self-assembled monolayer (SAM)

et al. 2015

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Polymer functionalized surfaces are important components of various sensors, solar cells and molecular electronic devices. In this context, the use of self-assembled monolayer (SAM) formation and subsequent reactions on the surface have attracted a lot of interest due to its stability, reliability and excellent control over orientation of functional groups. The chemical reactions to be employed on a SAM must ensure an effective functional group conversion while the reaction conditions must be mild enough to retain the structural integrity. This synthetic constraint has no universal solution; specific strategies such as "graft from", "graft to", "graft through" or "direct" immobilization approaches are employed depending on the nature of the substrate, polymer and its area of applications. We have reviewed current developments in the methodology of immobilization of a polymer in the first part of the article. Special emphasis has been given to the merits and demerits of certain methods. Another issue concerns the utility - demonstrated or perceived - of conjugated or non-conjugated macromolecules anchored on a functionally decorated SAM in the areas of material science and biotechnology. In the last part of the review article, we looked at the collective research efforts towards SAM-based polymer devices and identified major pointers of progress (236 references).

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Section: Introductionmentioning

confidence: 99%

Controlled decoration of the surface with macromolecules: polymerization on a self-assembled monolayer (SAM)

et al. 2015

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“…PANI was prepared by the solution polymerization of aniline with ammonium persulphate (APS) as an oxidant and 5-sulfosalicylic acid (SSA) as a dopant. 14,27 First, an aqueous solution of APS (used as an oxidant) was prepared by dissolving 9.1 g of APS in 100 mL of deionized water. Further, 3.72 g of aniline was dissolved in 100 mL of aqueous solution, which contains 5.08 g of SSA.…”

Section: Fabrication Of Scy-pani Bersmentioning

confidence: 99%

A highly stretchable humidity sensor based on spandex covered yarns and nanostructured polyaniline

et al. 2018

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“…In view of sensing materials feature, among the conducting polymers (such as polythiophene, polypyrrole, and polyaniline (PAni)), PAni is used as a potential material for NH 3 gas sensing applications due to its attractive redox properties [1][2][3][4][5]. Among the conducting polymers, PAni is the most suitable polymer for being either doped or de-doped by the addition/removal of H + ions at backbone [4][5][6]. However, polymer based gas sensors have a poor stability due to exposure of temperature and moisture in the environment, which impairing the long term sensing performance [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, gas sensors prepared using metal oxides such as tungsten oxide (WO 3 ), tin oxide (SnO 2 ), iron oxide (Fe 2 O 3 ), and zinc oxide (ZnO), exhibit better stability and superior sensing characteristics, caused by oxygen stoichiometry change, but their higher operating temperature (200-400 °C) limits practical and commercial use [9][10][11]. Room temperature gas detection is a notable property of conducting polymer sensors [4][5][6]; therefore, it is necessary to modify the properties of conducting polymers in order to remove their existing drawbacks. The functional properties of conducting polymerbased gas sensors can be improved by incorporating metal oxide nanoparticles into the polymer matrix [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Flexible camphor sulfonic acid-doped PAni/α-Fe2O3 nanocomposite films and their room temperature ammonia sensing activity

Bandgar

Navale

et al. 2017

Materials Chemistry and Physics

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Composite nanostructures play a crucial role in gas sensing applications owing to their tunable properties and sizes. The main goal of this article is to prepare camphor sulfonic acid (10-50 wt %)-doped PAni/α-Fe 2 O 3 (PFC) composite nanostructured films on flexible polyethylene terephthalate (PET) substrate through in-situ polymerization process and study their gas sensing activity towards various gases. Structural and morphological measurements along with gas sensing properties in terms of selectivity, response, stability, and response-recovery times are investigated and reported. The gas selectivity tests of flexible PFC nanostructured composite films are performed towards different gases such as NO 2 , NH 3 , LPG, CH 3 OH, and C 2 H 5 OH etc., wherein all the flexible PFC (10-50%) films demonstrate a superior selectivity towards NH 3 gas even in the presence of other test gases. Among the different compositions, 30% PFC flexible film exhibits highest response of 72% to 100 ppm NH 3 with good response time of 65s. The systematic study between PFC flexible nanocomposite films and NH 3 gas is conducted and

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Morphology dependent ammonia sensing with 5-sulfosalicylic acid doped nanostructured polyaniline synthesized by several routes

Cited by 27 publications

References 42 publications

Controlled decoration of the surface with macromolecules: polymerization on a self-assembled monolayer (SAM)

Controlled decoration of the surface with macromolecules: polymerization on a self-assembled monolayer (SAM)

A highly stretchable humidity sensor based on spandex covered yarns and nanostructured polyaniline

Flexible camphor sulfonic acid-doped PAni/α-Fe2O3 nanocomposite films and their room temperature ammonia sensing activity

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