Polyaniline Nanostructures Doped with Fluorescent TPA-BTD-BN

2013 ◽  
Vol 807-809 ◽  
pp. 2679-2683
Author(s):  
Hang Jun Ding ◽  
Zhou Yang ◽  
He Yang ◽  
Yun Ze Long ◽  
Qing Guo He
Keyword(s):  
Electrical Properties ◽  
Fluorescence Spectroscopy ◽  
Room Temperature ◽  
Three Dimensional ◽  
Variable Range Hopping ◽  
Strong Fluorescence ◽  
Exponential Temperature Dependence ◽  
Composite Pellets ◽  
Template Free ◽  
Dimensional Variable

In this paper, a novel fluorescent material with high conductivity as 0.45 S·cm-1 and strong fluorescence has been successfully synthesized basing on polyaniline (PANI) nanostructures doped with a new prepared fluorescein TPABTDBN. The PANI nanostructures were prepared via a simplified template-free method (STFM) with FeCl3 as oxidant and dopant. The resulting sample was characterized by SEM, IR and fluorescence spectroscopy. The fluorescence intensity of synthesized composite improves with the increasing content of TPABTDBN. The electrical properties of pressed composite pellets were measured from room temperature about 291K down to 132K, the conductance follow the exponential temperature dependence of three-dimensional variable-range hopping (VRH) model.

scholarly journals Fabrication and Characterization of Composite Containing HCl-Doped Polyaniline and Fe Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Rongcheng Liu ◽  
Hong Qiu ◽  
Hua Zong ◽  
Chunying Fang
Keyword(s):  
Carrier Transport ◽  
Room Temperature ◽  
Heating Temperature ◽  
Room Temperature Ferromagnetism ◽  
Three Dimensional ◽  
Composite Pellet ◽  
Fe Nanoparticles ◽  
Doped Polyaniline ◽  
Dimensional Variable

HCl-doped polyaniline powder (HCl-PANI) was synthesized by using a polymerization procedure. Fe nanoparticles were then deposited on the HCl-PANI at room temperature by direct current magnetron sputtering. After this process the HCl-PANI-Fe composite was obtained. Fe nanoparticle size in the composite is about 100 nm. HCl-PANI structure is not influenced by the Fe nanoparticles. The composite pellet has room temperature ferromagnetism and a conductivity of 0.25 S/cm. Temperature dependence of the conductivity reveals that a carrier transport mechanism in the composite is three-dimensional variable range hopping. Thermogravimetric analysis reveals that a weight loss of the HCl-PANI-Fe composite is smaller than that of the HCl-PANI for the same heating temperature when the temperature exceeds 230°C.

A three-dimensional CdIIcoordination framework: poly[di-μ2-aqua-{μ2-1,4-bis[(1H-1,2,4-triazol-1-yl)methyl]benzene-κ2N4:N4′}di-μ3-terephthalato-κ3O:O′:O′′-dicadmium(II)]

2014 ◽  
Vol 70 (11) ◽  
pp. 1025-1028
Author(s):  
Hong Shen
Keyword(s):  
Solid State ◽  
Thermogravimetric Analysis ◽  
Room Temperature ◽  
Three Dimensional ◽  
Fluorescence Emission ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Strong Fluorescence ◽  
X Ray ◽  
Methyl Benzene

The title CdIIcoordination polymer, [Cd(C10H8O4)(C12H12N6)0.5(H2O)]n, has been obtained by the hydrothermal method and studied by single-crystal X-ray diffraction, elemental analysis, thermogravimetric analysis, IR spectroscopy and fluorescence spectroscopy. The compound forms a novel three-dimensional framework with 3,8-connected three-dimensional binodal {4.52}2{42.510.612.7.83} topology. An investigation of its photoluminescence properties shows that the compound exhibits a strong fluorescence emission in the solid state at room temperature.

Template-Free Synthesis and Properties of Polyaniline Nanostructures Doped with Different Oxidants

2011 ◽  
Vol 688 ◽  
pp. 334-338 ◽  
Author(s):  
He Yang ◽  
Yun Ze Long ◽  
Hang Jun Ding
Keyword(s):  
Self Assembly ◽  
Room Temperature ◽  
Three Dimensional ◽  
Ammonium Persulfate ◽  
Molar Ratio ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Assembly Method ◽  
Temperature Dependence Of Conductivity ◽  
Template Free

In this work, we report on conducting polyaniline (PANI) nanostructures synthesized by a simplified template-free self-assembly method, which are doped with different oxidants such as ammonium persulfate (APS), FeCl3, Fe(NO3)3, and Fe2(SO4)3. It is found that the morphologies of the as-prepared PANI nanowires are dependent on the oxidant and the molar ratio of aniline to oxidant. The PANI nanostructures are semiconducting with room-temperature conductivity ranging from 10-2to 100S/cm, and the temperature dependence of conductivity follows three-dimensional Mott variable range hopping (3D Mott-VRH) model. In addition, the PANI pellets exhibit hydrophilic behavior.

ZnO Nanowalls/Si Substrate Heterojunction Assembly: Morphological, Optical and Electrical Properties

2020 ◽  
Vol 15 (5) ◽  
pp. 586-591
Author(s):  
Yas Al-Hadeethi ◽  
Ahmad Umar ◽  
Saleh H. Al-Heniti ◽  
Bahaaudin M. Raffah ◽  
Rashad I. Badran
Keyword(s):  
Electrical Properties ◽  
Room Temperature ◽  
Forward Bias ◽  
Three Dimensional ◽  
Zinc Powder ◽  
X Ray Diffraction ◽  
Si Substrate ◽  
Irregular Shapes ◽  
Heterojunction Device ◽  
Bias Condition

In this paper, a film of n-ZnO nanowalls was deposited over p-silicon (Si) substrate by thermally evaporating metallic zinc powder in oxygen gas environment. Several techniques were used to examine various properties of prepared ZnO nanowalls. The morphological study confirmed that the grown ZnO film possesses nanowalls shaped morphologies containing three dimensional (3D) interconnected nanowalls forming large voids with irregular shapes. Interestingly, whole Si substrate was covered with nanowalls shaped morphologies. The structural characterizations examined by x-ray diffraction (XRD) confirmed that the deposited nanowalls possess wurtzite hexagonal crystal structure. The presence of a strong UV and suppressed green emissions at room-temperature photoluminescence (PL) spectrum exhibited good optical properties of the deposited nanowalls. The electrical properties of the deposited n-ZnO nanowalls over p-silicon substrate assembly was examined in both forward and reverse bias conditions at room-temperature. The fabricated heterojunction device exhibits a standard rectifying behavior which manifests itself in an exponential increase of the current with increase in voltage at forward bias condition. Also, it has a good quality factor similar to an ideal diode.

Application of Three-Dimensional Fluorescence Spectrum Method and PARAFAC in Petroleum Pollutant Measurement and Identification

2011 ◽  
Vol 311-313 ◽  
pp. 1213-1216
Author(s):  
Shu Tao Wang ◽  
Xiao Qing Shao ◽  
Zhao Pan ◽  
Peng Wei Zhang ◽  
Le Gong
Keyword(s):  
Fluorescence Spectroscopy ◽  
Fluorescence Intensity ◽  
Three Dimensional ◽  
Petroleum Products ◽  
Important Application ◽  
Strong Fluorescence ◽  
Resolution System ◽  
Fluorescence Characteristics ◽  
Petroleum Contaminants ◽  
Petroleum Pollutant

Because petroleum contaminants have a big impact on marine environment, the recognition and monitoring research of petroleum contaminants has important application value. According to the petroleum products all process strong fluorescence characteristics, three-dimensional fluorescence spectroscopy technology can be applied to petroleum contaminants for monitoring. This paper adopts PARAFAC to deal with 3-d fluorescence data of petroleum pollutant. Thereby get that PARAFAC algorithm can get accurate resolution system of the corresponding spectrum each substance and relative concentrations. In addition, to get better predicted results by PARAFAC method, the fluorescence intensity of interference substance should be significantly less than fluorescence intensity of the lowest concentration of the sample which is to be predicted.

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