نتایج جستجو برای: polyaniline emeraldine base

تعداد نتایج: 260313  

Journal: :Journal of the American Chemical Society 2006
Takahiro Takei Yoji Kobayashi Hideo Hata Yoshinori Yonesaki Nobuhiro Kumada Nobukazu Kinomura Thomas E Mallouk

Films of highly oriented alpha-zirconium phosphate and polyaniline-intercalated zirconium phosphate with controllable thickness in the micrometer range were grown anodically on Pt electrodes. To optimize the electrodeposition conditions, the exfoliation of alpha-zirconium phosphate by tetrabutylammonium (TBA) salts was investigated in several nonaqueous solvents. Acetonitrile was found to be th...

2016
Sesha Vempati Yelda Ertas V. Jagadeesh Babu Tamer Uyar

Integrated structure of titanate nanotubes and nanosheets is investigated for their optical, electronic and optoelectronic properties when combined with HCl doped polyaniline (PANI). HR-TEM, SEM and XRD were employed for detailed morphological and microstructural understanding of the orthorhombic titanate nanostructure. Chemisorbed oxygeneous groups are probed with Raman spectroscopy which are ...

Journal: :Journal of Applied Electrochemistry 2021

Abstract A class of metal-doped polyanilines (PANIs) was synthesized and investigated as electrocatalysts for the carbon dioxide reduction reaction (CO 2 RR). These materials show good affinity electrode substrate allow to obtain stable binder-free electrodes, avoiding utilization expensive ionomer additives. The emeraldine-base polyaniline (EB-PANI), in absence metal dopant, shows negligible e...

2014
Zhi-Qiang Fan Ke-Qiu Chen

Incorporating the characteristics of the single-layer graphene nanoribbon and the polyaniline molecule, we theoretically design a two-dimensional molecular device and investigate its transport properties by applying nonequilibrium Green's functions in combination with density-functional theory. The calculated results reveal that the arrangements of frontier molecular orbitals and the energy gap...

2012
Xusheng Du Hong-Yuan Liu Guipeng Cai Yiu-Wing Mai Avinash Baji

A facile approach to functionalize carbon nanofibers [CNFs] with nanostructured polyaniline was developed via in situ mechanochemical polymerization of polyaniline in the presence of chemically treated CNFs. The nanostructured polyaniline grafting on the CNF was mainly in a form of branched nanofibers as well as rough nanolayers. The good dispersibility and processability of the hybrid nanocomp...

2002
K. A. Weiss

Protonation of polyaniline base with lightly sulfonated polystyrene in polar solvents such its dimethyl sulfoxide and N-methyl-2-py~olidone was investigated by UV-Vis absorption spectra. As the molar ratio of sulfonated polystyrenelpolyaniline increases, the conversion from polyaniline base form to salt form is observed owing 10 incrensed protonation. The isosbestic point clearly shows that qui...

Journal: :Accounts of chemical research 2009
Dan Li Jiaxing Huang Richard B Kaner

Known for more than 150 years, polyaniline is the oldest and potentially one of the most useful conducting polymers because of its facile synthesis, environmental stability, and simple acid/base doping/dedoping chemistry. Because a nanoform of this polymer could offer new properties or enhanced performance, nanostructured polyaniline has attracted a great deal of interest during the past few ye...

Journal: :Journal of Electroanalytical Chemistry 2021

• Quantification of redox forms polyaniline. Octameric model for PANI transitions. Back to aniline-black structures. The transitions in acidic medium have been monitored by a combination cyclic voltammetry, situ conductance and FTIR spectroscopy. results the semiquantitative analysis strongly suggest that classical tetrameric does not satisfactorily describe actual structures polymer at differe...

Journal: :Physical chemistry chemical physics : PCCP 2011
L Dennany P C Innis S T McGovern G G Wallace Robert J Forster

The properties of two forms of polyaniline (PAni) synthesised under acidic and basic conditions have been investigated both individually and as combined complexes. The PAni polymerised within alkaline media was redox inactive and non-conducting while the PAni emeraldine salt (ES) was electroactive and conducting. Raman, electron spin resonance, UV-Vis and fluorescence spectroscopies were used t...

Journal: :Journal of Materials Science: Materials in Electronics 2021

The Fluorescence sensing technique for trace detection of High Energy Materials (HEMs) has gained more attention in recent times. In the present paper, interaction between fluorophore and HEMs is studied using spectroscopic electrochemical techniques. polyaniline (PANI) was functionalised by doping it with benzenesulfonic acid (BSA) to increase processability, mobility ?-electrons along decreas...

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