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Progress in the studies of multifunctional triphenylamine materials Hongyun Chena＊ and Congbin Fanb School of Chemistry & Chemical Engineering, Jiangxi Science & Technology Normal University, Nanchang 330013; China aEmail:136169501@qq.com Keywords: triphenylamine, photoelectric conversion, electrochromism, optical limiting, chemical sensing Abstract.
Photovoltaic properties Triphenylamine is based on a nitrogen atom as the center, connected with the propeller structure three benzenoid hydrocarbons.
Because the three benzene rings unique propeller structure of triphenylamine, optoelectronic properties is good, can perform different functions according to its different position in the device, as the electron donating groups and organic heterojunction photovoltaic cells.
Lee research group [5] reported the properties of having a blue organic light emitting efficiency, to maximize the current efficiency of 7.9 cd/A, the effectiveness of the three compounds was 6.8 lm/W, the complex structure of these compounds is the mesh structure aniline - anthracene derivatives.
Electrochromic properties Triphenyl amines primarily because of its outer nitrogen atoms and the lone electron benzene ring structure can be conjugated to a quinone-type structure, while the performance of different colors, so there electrochromic properties in recent years by the majority of researchers favor .

These properties may vary as a function of the TiO2 structure, shape and size of particles, as well as the morphology and texture of the latter.
To this end, the authors have modified the TiO2 structure with carbon nanotubes (CNTs).
Results and Discussion The structure of the TiO2-N sample was investigated by scanning electron microscopy (SEM).
Zigel, The concentration of impurities in the study of natural water objects, Journal of General Chemistry, 71 (133) (2001) 21-24.
Rajh, Surface modification of TiO2: correlation between structure, charge separation and reduction properties, Acta Chem.

Leather is a natural polymer (protein) consisting of collagen fiber crosslinked in three dimensional structure.
The peak at 1448 cm-1 was due to vibration of pyrroliding ring in the collagen structure.
These results indicated that the main component of the leather waste fiber was collagen [3] which has typical structure shown in Figure 2.
This might be due to the fact that the urea contains amine in its structure which would facilitate the curing reaction.
Thus the structure of collagen was destroyed; as a result very small particle-like was detected.

At grain boundary having higher energy, fan-type structure can be formed in the region with opportune concentration of the alloy element.
As an undercooled structure, the space of the two phases was increasing with the decreasing cooling rate and undercooling.
High temperature homogenization can'ot completely eliminate the difference of the chemistry composition in the variant region.
Fig. 6 TEM photograph showing the sub-grain structure in hot deformation progress.
In the region with opportune undercooling and cooling rate, the fan-type g/g' structure was formed and the grain boundaries were tortured.

The high levels of moisture, which are intimately combined in the coal structure, cannot be simply removed by drying as the product coal is unstable and tends to spontaneously combust.
The decrease in volatile is mainly because the small molecules in coal detach from the structure; the calorific value increase with increase of treatment temperature.
The decrease in calorific value is mainly because the structure of coal has been changed under the pyrolysis condition. 3.3 FI-IR study In order to understand the influence of mild pyrolysis on surface properties, the samples were analyzed by FT-IR.
a-parent; b-150℃;c-200℃;d-250℃;e-300℃;f-350℃;g-400℃;h-450℃ Fig. 3 FT-IR spectra of the original and modified XLT samples a-parent; b-150℃;c-200℃;d-250℃;e-300℃;f-350℃;g-400℃;h-450℃ Fig. 4 FT-IR spectra of the original and modified HLH samples Fig.3 and Fig.4 allowed us to observe more clearly their organic structures: aliphatic hydrogen (2900, 2850 and 1440 cm-1), oxygen structures carboxylic groups, 1750 cm-1; C–O–R structures, zone around 1100 cm-1.
Chemistry of coal utilization.

The structure, electrochemical and optical properties of films heated at 250℃ for 2h were investigated and references were provided for the research. 2.
But the peak current is very weak, and TiO2 thin film appears the amorphous structure.
And this was associated with the composition and structure of the film.
Journal of Solid State Chemistry, Vol.177 (2004) 1873-1885
Structure and Redox Properties of CexTi1-xO2 Solid Solution.

The silica and calcium dissolution results revealed that the easier the flux of fluid in the composite structure the higher the dissolution.
The results achieved on the bioceramic-polymer composites enable us to design multicomposites where the properties of the structure can be varied widely.
In the studied multicomposite (Fig. 2 and schematic structure in Fig. 3) it is shown that CaP is formed also on the baSiO2-PDLLA side of the multicomposite (although not so extensively as on CaPSiO2-PDLLA side of the multicomposite).
In addition, the results provide possibilities to design structures that have various bioresorption rates in different parts of the multicomposite that may be needed, e.g., in tissue guiding devices.
The bioceramics properties determine the major properties of whole composite structure with respect to bioactivity and the composite parameters (porosity, bioceramics content) provide possibilities to fine adjustments.

The XRD patterns of the ferrite samples show characteristic diffraction peaks corresponding to the M-type barium ferrite structure, having point group P63/mmc, indicating that the crystal structure does not transform and remains hexagonal magnetoplumbite after substitution with cobalt ions.
Using the JCPDS data the peaks of the XRD pattern were indices for the hexagonal structure.
The X-ray diffraction pattern reveals the formation of M-phase hexagonal structure and no impurity phase is present.
Materials Chemistry and Physics. 118 (2009) 308-311
[10] X.Liu,W.Zhong,S.Yang,Z.Yu,B.Gu,Y.Du, Influences of La3+ substitution on the structure and magnetic properties of M-type strontium ferrites, J.

Surface property, such as surface topography, chemistry and hydrophilicity, has a great impact on initial cell attachment which will further affect the cell viability and proliferation [32-34].
Porous scaffold fabricated by freeze-dry technique to provide a 3D (Three Dimensional) structure for tissue repair and regeneration.
Chitosan because of its chemical structure like as ECM could initiate cell recognition which can enhance cell adhesion.
According to this chitosan were added to scaffolds to treat surface chemistry and scaffold composition to enhance surface hydrophilicity and cell-scaffold interaction.
Control of pore structure and size in freeze‐dried collagen sponges.

Analysis of the flame structure has allowed the mechanisms of flame weakening in the base and trailing flame regions to be compared.
The effects of fire-extinguishing agents CF3Br and C2HF5 on the structure and extinguishing processes of microgravity cup-burner flames have been studied numerically [14].
Journal of Fluorine Chemistry, 153 (2013) 101–106
International Journal of Quantum Chemistry, 2021
Meier, Cup-burner flame structure and extinguishment by CF3Br and C2HF5 in microgravity, Proceedings of the Combustion Institute, 34(2) (2013) 2707–2717