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Vanadium templated 2D PANI films drop cast onto glass. Synthesis conditions include 0.15 g V 2 O 5 , 20 mL HCL, 0.1 g aniline, 0-5 °C, no stirring. All phase images display 45° BTW grayscale. (a) 36 h synthesis, 100 nm BTW grayscale, (b) 36 h synthesis, 100 nm BTW grayscale, (c) corresponding phase image of (b), (d) 24 h synthesis, 500 nm BTW grayscale, (e) corresponding phase image of (d), (f) 24 h synthesis, 150 nm BTW grayscale, (g) corresponding phase image of (f), (h) 24 h synthesis, 50 nm grayscale, and (i) corresponding phase image of (h).
Source publication
We report on morphosynthesis techniques that have been employed to tune polyamine film nanoarchitectures and on their resulting morphologies. Specific layers discussed include films of aniline/Laponite clay and aniline solution processed with V2O5 catalyst. Synthesis approaches examined include films generated in-situ (glass templating), solution b...
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... work by Li et al. [20] reported polyaniline self-assembly into a flower-like morphology similar to urchin-like structures. Surface topography and the corresponding phase images of the surfaces of vanadium templated PANI films are provided in Fig. 2. Fig. 2a through c represents surfaces developed after 36 h while Fig. 2d through i represents film surface topographies after 24 h of synthesis. The height images of Fig. 2a and b reveal the presence of rod or fiber-like arrangement of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image ...
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... work by Li et al. [20] reported polyaniline self-assembly into a flower-like morphology similar to urchin-like structures. Surface topography and the corresponding phase images of the surfaces of vanadium templated PANI films are provided in Fig. 2. Fig. 2a through c represents surfaces developed after 36 h while Fig. 2d through i represents film surface topographies after 24 h of synthesis. The height images of Fig. 2a and b reveal the presence of rod or fiber-like arrangement of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature ...
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... morphology similar to urchin-like structures. Surface topography and the corresponding phase images of the surfaces of vanadium templated PANI films are provided in Fig. 2. Fig. 2a through c represents surfaces developed after 36 h while Fig. 2d through i represents film surface topographies after 24 h of synthesis. The height images of Fig. 2a and b reveal the presence of rod or fiber-like arrangement of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D ...
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... Fig. 2a through c represents surfaces developed after 36 h while Fig. 2d through i represents film surface topographies after 24 h of synthesis. The height images of Fig. 2a and b reveal the presence of rod or fiber-like arrangement of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D (smaller islands) self-assembled PANI nanostructures. It can be seen in Fig. 2d that the urchin structures are approximately 2-3 μm in length. Additional morphology (Fig. 2f and h) ...
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... surfaces developed after 36 h while Fig. 2d through i represents film surface topographies after 24 h of synthesis. The height images of Fig. 2a and b reveal the presence of rod or fiber-like arrangement of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D (smaller islands) self-assembled PANI nanostructures. It can be seen in Fig. 2d that the urchin structures are approximately 2-3 μm in length. Additional morphology (Fig. 2f and h) and phase ( Fig. 2g and i) ...
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... after 24 h of synthesis. The height images of Fig. 2a and b reveal the presence of rod or fiber-like arrangement of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D (smaller islands) self-assembled PANI nanostructures. It can be seen in Fig. 2d that the urchin structures are approximately 2-3 μm in length. Additional morphology (Fig. 2f and h) and phase ( Fig. 2g and i) images of the same sample show nanostructures with high interfacial area that supports ...
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... of the PANI structure. Note the 30 to 50 nm long PANI nanoplates present in the fiber region in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D (smaller islands) self-assembled PANI nanostructures. It can be seen in Fig. 2d that the urchin structures are approximately 2-3 μm in length. Additional morphology (Fig. 2f and h) and phase ( Fig. 2g and i) images of the same sample show nanostructures with high interfacial area that supports excitonic transport. Mechanochemical grinding is an additional morphosynthetic technique applied to enhance our solar cell ...
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... in the phase image of Fig. 2c. The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D (smaller islands) self-assembled PANI nanostructures. It can be seen in Fig. 2d that the urchin structures are approximately 2-3 μm in length. Additional morphology (Fig. 2f and h) and phase ( Fig. 2g and i) images of the same sample show nanostructures with high interfacial area that supports excitonic transport. Mechanochemical grinding is an additional morphosynthetic technique applied to enhance our solar cell design [15]. AFM height images of a PANI/Laponite mechanochemical nanocomposite film are provided ...
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... The height image Fig. 2d shows the urchin feature height to be on the order of 500 nm. The phase mapping image Fig. 2e shows distinct 2D (urchin) and 3D (smaller islands) self-assembled PANI nanostructures. It can be seen in Fig. 2d that the urchin structures are approximately 2-3 μm in length. Additional morphology (Fig. 2f and h) and phase ( Fig. 2g and i) images of the same sample show nanostructures with high interfacial area that supports excitonic transport. Mechanochemical grinding is an additional morphosynthetic technique applied to enhance our solar cell design [15]. AFM height images of a PANI/Laponite mechanochemical nanocomposite film are provided in Fig. 3a and b. Phase ...
Citations
... 16,17 PANI's conductivity has been shown to vary considerably with changes in its oxidation state and morphology. 14,18 Depending on the morphosynthetic conditions used, PANI has been isolated as fibers, wires, microwebs, hemispheres, nests, rods, and 2D nanosheets along with many other morphologies. 14,19 Graphene intercalation compounds of conductive polymers such as PANI have been studied insofar as the composites provide a lightweight nanomaterial with improved electrical performance, especially as supercapacitor electrodes. ...
Graphene-polyaniline (GP) nanocomposites have demonstrated remarkable ability as supercapacitive materials, and are typically synthesised via chemical reduction of graphene oxide/polyaniline (GOP) precursors. We report the formation of novel nanomaterials combining GOP nanocomposites with Laponite nanodiscs. Host-guest interactions within GOP systems were studied with and without Laponite nanoparticle templating agents. Incorporating Laponite clay into the composite synthesis enhances aqueous dispersibility as well as facilitates the casting of homogenous films. Structural and morphological characterisation confirmed porous heterointerfaces and control of polymer and nanoclay loading. These results may enable the development of flexible supercapacitive and solar nanocomposites with improved device utility, water dispersibility and film processability. We demonstrate that these films can be easily cast, and that the composites maintain their electrical transport properties.
... Synthesis: Polyaniline materials were synthesized as previously reported [16,17]. First, 0.15 g of vanadium oxide (V 2 O 5 ) was dissolved in 20 mL of 0.75 M HCl and stirred for 1 h, forming a clear yellow liquid. ...
