Chemical One Step Method to Prepare Polyaniline Nanofibers with Electromagnetic Function

Zhang, Zhiming; Deng, Junying; Shen, Junyao; Wan, Meixiang; Chen, Zhaojia

doi:10.1002/marc.200600729

Cited by 57 publications

(44 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bands at 1304 and 1241 cm -1 can be assigned to C-H stretching vibration with aromatic conjugation [42,43]. The absorption peak near 1147 cm -1 results from the N-Q-N (Q denotes quinoid ring) stretching mode and is an indication of electron delocalization in PANI [44].The aromatic C-H out-of-plate deformation in 1,4-disubstituted benzene rings locates at 822 cm -1 . The absorption bands at 3379, 555, 1631, 1514, and 1313 cm -1 in Fig.…”

Section: Resultsmentioning

confidence: 95%

A three-dimensional nanostructured PANI/MnO x porous microsphere and its capacitive performance

et al. 2012

View full text Add to dashboard Cite

Three-dimensional nanostructured polyaniline (PANI) and manganese oxide (MnO x ) composite porous microspheres were prepared by oxidizing aniline with KMnO 4 under interfacial chemical synthesis with 4-aminothiophenol (4-ATP) as the structure-directing agent on the Au substrate. Surface morphology and chemical composition of PANI/MnO x microsphere were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, thermo gravimetric-differential thermal analysis, and Fourier transform infrared spectrum. The result displayed that concentration of KMnO 4 played a key role in forming the 3D nanostructured porous microspheres. To obtain the regular shapes and uniform sizes of the porous microspheres, the optimal concentration of oxidant was 0.15 mol L -1 . The electrochemistry performances of PANI/MnO x microsphere were determined by cyclic voltammograms, electrochemical impedance spectroscopy, and galvanostatic charge-discharge. The specific capacitance of the 3D nanostructured PANI-MnO x porous microspheres exhibited a maximum value of 828 F g -1 at current density of 2 mA cm -2 over a potential range of 0.0-0.9 V versus SCE. It has improved 365 and 88 % comparing with that of PANI (178 F g -1 ) and MnO x (440 F g -1 ) obtained at the similar condition. The chargedischarge tests showed the PANI/MnO x microsphere possessed a good cycling stability. It maintained about 84.2 % of the initial capacitance after 1000 cycles at a current density of 2.0 mA cm -2 .

show abstract

Section: Resultsmentioning

confidence: 95%

A three-dimensional nanostructured PANI/MnO x porous microsphere and its capacitive performance

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Based on the above ideas, electromagnetic functional PANI-g-Fe 2 O 3 fibers were successfully prepared by a one-step method. [75] The trick to this method was to adjust the concentration of Fe 3þ and Fe 2þ and the molar ratio of aniline to APS. Interestingly, the electrical properties are controlled by the concentration of Fe 3þ ions, whereas the ferromagnetic properties are adjusted by the concentration of the Fe 2þ ions.…”

Section: Multi-functionality Based On a Templatefree Methods Associatementioning

confidence: 99%

Some Issues Related to Polyaniline Micro‐/Nanostructures

Wan

2009

Macromol. Rapid Commun.

Self Cite

147

View full text Add to dashboard Cite

This feature article reviews the authors' work combined with highlighted specific aspects of polyaniline (PANI) macro/nanostructures, focusing on such issues as the following. 1) The new development of a hard-template method. 2) Evaluation of a template-free method in universality, controllability, and simplicity as well as the self-assembly mechanism. 3) Multi-functionality based on a template-free method associated with other approaches. 4) Cooperation effect of a micelle soft-template and molecular interactions as a new tool to complex 3D microstructures assembled from 2D or 1D nanostructures. 5) Electrical and transport properties of a single PANI nanotube, as measured by a four-probe method. 6) Sensors guided by reversible switching wettability through a doping/de-doping process. An outlook is also briefly given.

show abstract

“…Chiou et al have reported a successful synthesis of a highly uniform, relatively long PANI-NFs via a self-assembly process assisted by the presence of excess oxidant (APS), without the use of any acid in the initial step [199]. A chemical one-step method, which represents a modified dopant-free template-free method, has been proposed to prepare electromagnetic functional composite PANI/Fe 3 O 4 nanofibers, with a diameter of 20 nm, which show high conductivity and super-paramagnetic properties [202]. 3-D rose-like microstructures of PANI, which are self-assembled from 2-D nanosheets consisting of 1-D nanofibers, were synthesized by the dopant-free template-free method in the presence of APS as both oxidant and dopant under a high relative humidity of 80% [201].…”

Section: Rapid-mixing Methodmentioning

confidence: 99%

Polyaniline Nanostructures

Ćirić‐Marjanović

2010

Nanostructured Conductive Polymers

View full text Add to dashboard Cite

Polyaniline (PANI) is one of the most extensively studied conducting polymers because of its simple synthesis [1] and doping/dedoping chemistry [2], low cost, high conductivity, and excellent environmental stability. PANI has a wide applicability in rechargeable batteries [3], erasable optical information storage [4], shielding of electromagnetic interference [5], microwave-and radar-absorbing materials [6], sensors [7], indicators [8], catalysts [9], electronic and bioelectronic components [10], membranes [11], electrochemical capacitors [12], electrochromic devices [13], nonlinear optical [14] and light-emitting devices [15], electromechanical actuators [16], antistatic [17] and anticorrosion coatings [18]. Its electromagnetic and optical properties depend mostly on its oxidation state and degree of protonation [19]. The green emeraldine salt form of PANI is conducting ($1-10 S cm À1 for granular powders) [1]. It contains, depending on the synthetic route, variousunits (in the preceeding formulae B, Q and A À denote a benzenoid ring, quinonoid ring and dopant anion, respectively). The blue emer-The preparation of bulk quantities of conducting granular PANI is usually performed Nanostructured Conductive PolymersEdited by Ali Eftekhari by the oxidative polymerization of aniline with ammonium peroxydisulfate (APS) in an acidic aqueous solution (initial pH < 2.0) [1]. Colloidal PANI nanoparticles are prepared by dispersion polymerization of aniline in the presence of various colloidal stabilizers [20,21]. The average size of colloidal PANI nanoparticles decreases with increasing stabilizer/aniline ratio. PANI colloids often have nonspherical (rice grain, needle-like, etc.) core-shell morphology. The colloidal nanoparticle core most likely has a composite nature, i.e. it is composed of both the PANI and the incorporated stabilizer, while the shell is formed by the stabilizer. Nowadays, conducting PANI nanostructures are the focus of intense research owing to their significantly enhanced dispersibility and processability, and substantially improved performance in many applications, in comparison with granular and colloidal PANI [22][23][24][25][26][27]. The continuously growing interest in the study of zero-dimensional (0-D) (solid nanospheres), one-dimensional (1-D) (nanofibers (nanowires), nanorods (nanosticks), nanoneedles, rice-like nanostructures, nanotubes), two-dimensional (2-D) (nanoribbons (nanobelts), nanosheets (nanoplates, nanoflakes, nanodisks, leaf-like nanostructures), nanorings (cyclic nanostructures), net-like nanostructures), and three-dimensional (3-D) PANI nanostructures (hollow nanospheres, dendritic and polyhedral nanoparticles, flower-like, rhizoid-like, brain-like, urchin-like, and star-like nanostructures, etc.) has dramatically increased in recent years (Figure 2.1). The major focus of research has been the preparation, characterization, processing, and application of PANI nanofibers (PANI-NFs) and nanotubes (PANI-NTs). PANI-NFs are 1-D PANI nanoobjects of cylindrical profile with diameters ...

show abstract

Chemical One Step Method to Prepare Polyaniline Nanofibers with Electromagnetic Function

Cited by 57 publications

References 23 publications

A three-dimensional nanostructured PANI/MnO x porous microsphere and its capacitive performance

A three-dimensional nanostructured PANI/MnO x porous microsphere and its capacitive performance

Some Issues Related to Polyaniline Micro‐/Nanostructures

Polyaniline Nanostructures

Contact Info

Product

Resources

About