Nanoreactors for the enzymatic synthesis of conducting polyaniline

Samuelson, Lynne A.; Liu, W.; Nagarajan, Ramaswamy; Kumar, Jitender; Bruno, Ferdinando F.; Cholli, Ashok L.; Tripathy, Sukant K.

doi:10.1016/s0379-6779(00)01452-1

Cited by 33 publications

(11 citation statements)

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“…The precise alignment of DNA molecules by Watson-Crick basepairing has formed the basis of DNA-templated assembly of metal nanowires [3,4], conjugated polymers [5][6][7] and semiconductor nanoparticle assemblies [8]. The DNA-templated synthesis of conjugated polymers has highlighted the feasibility of enzyme catalyzed polymerization reactions using mild conditions [9,10] that are far removed from the traditionally harsher chemical and electrochemical syntheses.…”

Section: Introductionmentioning

confidence: 99%

DNA template-assisted modulation of horseradish peroxidase activity

Datta¹,

Dou²,

Shibley³

et al. 2012

International Journal of Biological Macromolecules

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Section: Introductionmentioning

confidence: 99%

DNA template-assisted modulation of horseradish peroxidase activity

Datta¹,

Dou²,

Shibley³

et al. 2012

International Journal of Biological Macromolecules

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“…[32][33][34][35][36][37] In addition, PANI has received considerable attention because of its unique reversible proton doping, high electrical conductivity, ease of preparation, and low cost. The demand for high-quality materials for electromagnetic compatibility has alarmingly increased.…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology and Electron Transport Properties of Composite Films by Poly-N-vinylcarbazole/Polyaniline

Basavaraja¹,

Jo²,

Kim³

et al. 2010

Bulletin of the Korean Chemical Society

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Poly-N-vinylcarbazole/polyaniline (PVK-PANI) composites are synthesized by varying target loading concentrations of aniline (0.025 -0.1 M). The surface morphology of the composites is studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The temperature-dependent DC conductivity of PVK-PANI composite films was studied at the temperature range of 300 -500 K. The data suggest that the conductivity increase with an increase in aniline concentration in the composite with an increase in temperature. Further based on the conductivity behavior we can suggest that the PVK-PANI composites show a semiconducting behavior with a positive temperature coefficient of resistivity (TCR). The enhanced conductivity and the positive TCR of the PVK-PANI composite films may be due to the strong interaction between PANI and PVK in the composite films.

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“…This enzyme polymerizes aromatic compounds such as anilines and phenols. Recently, Samuelson et al reported enzymatically synthesized conducting Pani using templates such as SPS [11,[14][15][16][17] and DNA. [18,19] In this approach, a water soluble Pani was formed in the presence of SPS.…”

Section: Introductionmentioning

confidence: 99%

A New Approach to Catalyze Template Polymerization of Aniline Using Electrostatically Multilayered Hematin Assemblies

Lee

Liu

et al. 2003

Journal of Macromolecular Science, Part A

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In this work, we describe a new approach to catalyze the template polymerization of conducting polyaniline (Pani). Electrostatic layer-by-layer (ELBL) self-assembly of a polyelectrolyte and a biomimetic catalyst, hematin has been utilized to construct a nanocomposite film catalyst. Poly(dimethyl diallylammonium chloride) (PDAC) and hematin have been used as polycation and counter anions, respectively. The absorption spectra by UV-VIS-NIR spectroscopy showed that a conductive form Pani was formed, not only as a coating on the surface of the ELBL composites, but was also formed in solution. Furthermore, it was found that the reaction rate was affected by pH and concentration of hematin in the multilayers. The feasibility of controlled desorption of hematin molecules from the LBL assembly was explored and demonstrated by changing pH and hematin concentration. It is believed that hematin sandwiched between positively charged polyelectrolytes in the composite films was slowly released into the solutions and then used to catalyze the template polymerization of aniline with SPS, resulting in a water soluble form of Pani. The polymerization rate of aniline in solution was enhanced with decreasing pH of the solutions due to increased desorption of hematin nanoparticles from the multilayers. These ELBL hematin assemblies demonstrated both a way to functionalize surfaces with conductive Pani and a potential method of reusability of the catalyst for improved cost effectiveness.

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Nanoreactors for the enzymatic synthesis of conducting polyaniline

Cited by 33 publications

References 0 publications

DNA template-assisted modulation of horseradish peroxidase activity

DNA template-assisted modulation of horseradish peroxidase activity

Surface Morphology and Electron Transport Properties of Composite Films by Poly-N-vinylcarbazole/Polyaniline

A New Approach to Catalyze Template Polymerization of Aniline Using Electrostatically Multilayered Hematin Assemblies

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