Fabrication of DBSA‐doped polyaniline nanorods by interfacial polymerization

Ding, Shihai; Mao, Hui; Zhang, Wanjin

doi:10.1002/app.28355

Cited by 60 publications

(23 citation statements)

References 34 publications

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“…The first one was attributed to the p-p* transition in the benzoid rings, and the second one was due to exciton absorption of the quinoid rings. 41,42 However, for doped PANI, a blueshift of the absorption bands occurred. The absorption band due to the p-p* transition in the benzoid rings shifted to 270 nm for CoCl 2 -doped PANI and to 288 nm for CuCl 2 -doped PANI.…”

Section: Optical Characterizationmentioning

confidence: 97%

Synthesis of copper chloride and cobalt chloride doped polyanilines and their magnetic and alternating‐current transport properties

Gupta¹,

Chakraborty²,

Ghatak³

et al. 2009

J of Applied Polymer Sci

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Polyaniline (PANI) was synthesized by the well-known oxidative polymerization of aniline with ammonium peroxodisulfate as the oxidant. The morphological, structural, thermal, optical, magnetic, and electrical properties were characterized with scanning electron microscopy, X-ray diffraction, Fourier transform infrared, thermogravimetric analysis, differential scanning calorimetry, ultraviolet-visible spectroscopy, room-temperature magnetic measurements, and low-temperature electrical transport measurements by the standard four-probe method. Greater thermal stability and crystallinity were observed in doped PANI versus pure PANI. Magnetic measurements showed that the magnetic susceptibility was field-dependent. Positive and negative susceptibility values were observed. This may have been due to the interactions of magnetic ions among interchains or intrachains of the polymer matrix. The alternating-current (ac) conductivity was measured in the temperature range of 77-300 K in the frequency range of 20 Hz to 1 MHz. The frequency-dependent real part of the complex ac conductivity was found to follow the universal dielectric response:is the frequency-dependent total conductivity, f is the frequency, and s is the frequency exponent] The trend in the variation of the frequency exponent with temperature corroborated the fact that correlated barrier hopping was the dominant charge-transport mechanism for PANI-CoCl 2 . An anomalous dependence on temperature of the frequency exponent was observed for PANI-CuCl 2 . This anomalous behavior could not be explained in terms of existing theories.

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Section: Optical Characterizationmentioning

confidence: 97%

Synthesis of copper chloride and cobalt chloride doped polyanilines and their magnetic and alternating‐current transport properties

Gupta¹,

Chakraborty²,

Ghatak³

et al. 2009

J of Applied Polymer Sci

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“…Soft templates are often long‐range order, self‐assembled structure from certain surfactants. They provide well‐defined spaces or channels to build tube‐, ribbon‐, thread‐ and fiber‐like polymer morphology with micrometer or nanometer size . These soft template surfactants are easy to remove after polymerization and the microstructure of resulting polymers can be maintained.…”

Section: Introductionmentioning

confidence: 99%

Enhancement in electrical conductive property of polypyrrole‐coated cotton fabrics using cationic surfactant

Lü

Xie

Liu

et al. 2016

J of Applied Polymer Sci

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Recently, great efforts have been made to gain highly conductive fabrics for smart textiles and flexible electromagnetic shielding materials. Different from the conventional chemical synthesis method, fibrillar polypyrrole was synthesized on the cotton fabrics via a simple chemical polymerization process with micelles of cationic surfactant (cetyltrimethylammonium bromide, CTAB) as soft template. The modified cotton fabric exhibited excellent electrical conductivity and electromagnetic interference shielding effectiveness due to the formation of fibrillar polypyrrole on the fiber surface. Electrical conductivity of fabric surface were studied by four-probe resistivity system. The highly conductive fabric with surface conductivity of 5.8 S cm 21 could be obtained by changing cationic surfactant concentration. The electromagnetic interference shielding effectiveness (EMI SE) of the modified fabrics was evaluated by the vector network analyzer instrument. Compared with the sample without using surfactant, the EMI SE value of PPy-coated cotton fabrics increased by 28% after using 0.03 M CTAB as soft template.

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“…The shape and size of the nanofibers does not appear to be affected by the solvent. PANI-NFs were prepared by an interfacial method in the presence of HCl [135,[143][144][145][146][147][148][149][150], HCl and SDS [151], HClO 4 [152][153][154], CSA [53], poly(styrenesulfonic acid) (PSSA) [155,156], DL-tartaric acid [157], DBSA [158], p-TSA [159], cerium(IV) oxide nanoparticles [160], and magnesium carbonate particles [161]. is preferred due to safety considerations, since the water layer seals the organic vapor within the reaction vessel.…”

Section: Template-free Methodsmentioning

confidence: 99%

Polyaniline Nanostructures

Ćirić‐Marjanović

2010

Nanostructured Conductive Polymers

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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 ...

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Fabrication of DBSA‐doped polyaniline nanorods by interfacial polymerization

Cited by 60 publications

References 34 publications

Synthesis of copper chloride and cobalt chloride doped polyanilines and their magnetic and alternating‐current transport properties

Synthesis of copper chloride and cobalt chloride doped polyanilines and their magnetic and alternating‐current transport properties

Enhancement in electrical conductive property of polypyrrole‐coated cotton fabrics using cationic surfactant

Polyaniline Nanostructures

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