scholarly journals Chemical design of onion-like carbon-silicon diimide polymer composites

2021 ◽  
Vol 2 ◽  
Author(s):  
Kaili Wang ◽  
Gabriela Mera
Keyword(s):  
Polymer Composites ◽  
Argon Atmosphere ◽  
Polymerization Reaction ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Uv Absorbance ◽  
Photoluminescence Spectra ◽  
Chemical Design ◽  
3D Matrix

Abstract Herein, we report the synthesis and characterization of a novel class of polymer composites based on onion-like carbons (OLCs)-silicon diimide by a salt-free polycondensation reaction. The pyridine-catalyzed polymerization reaction was carried out in the presence of various contents (0.1, 0.5, 1, and 2 wt%) of carboxyl-functionalized OLCs in argon atmosphere to provide composites with well-dispersed and covalently incorporated 0D nanocarbons throughout the 3D matrix of silicon diimide polymer. A strong dependency of the optical properties (UV absorbance and the photoluminescence spectra) on the content of functionalized OLCs incorporated within the polymer matrix was observed. The novel polymer composites are suitable precursors for the design of advanced and multifunctional 0D-nanocarbon–containing Si3N4-based ceramic nanocomposites.

scholarly journals Analysis of New Piperidine Substituted Benzothiazole Crystalline Derivatives

2021 ◽  
Vol 37 (5) ◽  
pp. 1158-1166
Author(s):  
S.Syed Shafi ◽  
R. Rajesh ◽  
R. Subaash ◽  
S.Senthil kumar
Keyword(s):  
Heterocyclic Compounds ◽  
Biological Properties ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Photoluminescence Spectra ◽  
Chemical Structures ◽  
Good Antibacterial Activity ◽  
Biological Studies ◽  
Crystalline Nature

Recently, heterocyclic compounds play important role in drug industries. The benzothiazole (BTA) is a bicyclic compound in heterocyclic because of their biological properties. In this paper the synthesis and characterization of benzothiazole were reported. The chemical structures of synthesized compounds were established based on spectral data of 1HNMR, 13CNMR, and IR. The mass of the novel compounds was established with the help of the LCMS test. The formation of the crystal was confirmed by powder XRD and the sharp peaks show the purity and crystalline nature of the samples. The photoluminescence spectra explain the optical property of the compound. The biological studies of synthesized compounds show that compound 5c possesses good antibacterial activity and compound 5d has good antifungal activity.

Synthesis and Characterization of Y2O3 Nanoflowers

2012 ◽  
Vol 465 ◽  
pp. 76-79 ◽  
Author(s):  
Shuang Zhan ◽  
Xia Li
Keyword(s):  
Fourier Transform ◽  
Phase Composition ◽  
Electron Microscope ◽  
Synthesis And Characterization ◽  
The Novel ◽  
X Ray Diffraction ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Scanning Electron

The novel Y2O3 nanoflowers were synthesized through a facile hydrothermal method without using any catalyst or template. The phase composition and the microstructure of as-prepared products were characterized by field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) as well as Fourier transform infrared spectrum. The formation mechanism for the Y2O3 flowers has been proposed.

Synthesis and Characterization of Novel ZnO Nanophosphors

2014 ◽  
Vol 938 ◽  
pp. 145-148
Author(s):  
Manmohan Singh Kurrey ◽  
Bhoopendra Dhar Diwan
Keyword(s):  
Zinc Oxide ◽  
Dose Range ◽  
Synthesis And Characterization ◽  
The Novel ◽  
Maximum Value ◽  
Solgel Method ◽  
Thermo Luminescence

In this paper, the novel ZnO nanophosphors is synthesized by solgel method. The study exposed ZnO nanophosphors samples in Gamma (y) radiation to investigate their thermo-luminescence (TL) intensity as a function of temperature. The thermo-luminescence response has been studied in the dose range 0.291.16 kGy and it is observed that the thermo-luminescence response increases with increase in the dose. Moreover, the TL intensity increases with temperature and attains its maximum value near 200 Cand decreases after this temperature. Keywords: Dosimetry; Thermo-luminescence; Zinc oxide; Nanophosphors.

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