Synthesis and Characterization of Fluorodinitrobenzenes with Tunable Melting Point: Potential Low Sensitive Energetic Plasticizer and Melt‐Cast Carrier †

2020 ◽  
Vol 38 (12) ◽  
pp. 1619-1624
Author(s):  
Yunlu Li ◽  
Peng Chen ◽  
Yan Liu ◽  
Ping Yin ◽  
Chunlin He ◽  
...  
Keyword(s):  
Melting Point ◽  
Synthesis And Characterization ◽  
Point Potential ◽  
Energetic Plasticizer

Electrospun PU/MgO/Ag Nanofibers for Antibacterial Activity and Flame Retardency

2021 ◽  
pp. 0887302X2110094
Author(s):  
V. Mamtha ◽  
H. N. Narasimha Murthy ◽  
V. Pujith Raj ◽  
Prashantha Tejas ◽  
C. S. Puneet ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Melting Point ◽  
Protective Clothing ◽  
Electrospun Nanofibers ◽  
Synthesis And Characterization ◽  
Zone Of Inhibition ◽  
Solution Combustion ◽  
E Coli ◽  
Afterglow Time

Antibacterial activity and fire retardation are equally desired for protective clothing. For achieving this, AgNP and MgO are independently researched as nanofillers in Polyurethane based electrospun nanofibers and their synergistic effect is scarcely addressed. This article reports synthesis and characterization of MgO of 70.01 nm and AgNP of 51 to 76 nm by solution combustion and hydrothermal routes respectively and their incorporation in electrospinning of Polyurethane. Flow rate 1 ml/hr, applied voltage 13 kV, tip to collector distance 15 cm were adopted for the electrospinning. Nanofibers of 65 nm were obtained for PU/MgO (3 wt. %) and 106 nm for PU/MgO (3 wt. %)/Ag (1 wt. %). Addition of MgO increased the melting point, after flame time and afterglow time. Incorporation of AgNP improved antibacterial activity. PU/MgO/Ag (2 wt. %) exhibited zone of inhibition of 2.1 cm and 3 cm against E. Coli and S. Aureus, respectively.

scholarly journals Synthesis and Characterization of 2,3-Diaminomaleonitrile Derivatives by One-Pot Schiff Base Reaction and Their Application in Dye Synthesized Solar Cells

2020 ◽  
Author(s):  
Saifaldeen Muwafag Abdalhadi ◽  
Asmaa Yahya Al-Baitai ◽  
Hazim Abdulrazzaq Al-Zubaidi
Keyword(s):  
Schiff Base ◽  
Solar Cells ◽  
Melting Point ◽  
Computational Study ◽  
Control Cell ◽  
Synthesis And Characterization ◽  
One Pot ◽  
Vis Spectroscopy ◽  
Ft Ir

In a one-pot reaction, three new 2,3-diaminomaleonitrile (DAMN) derivative dyes were prepared by simple Schiff base reaction. The compounds were designed as a sensitizer in dye synthesizes solar cells (DSSCs). Many conditions have been used to provide the methodology to get the best yield. The prepared dyes were characterized by melting point, elemental microanalysis, mass spectroscopy, FT-IR, 1H-NMR, and UV-Vis spectroscopy. A computational study was carried out to support our results. The DSSC data was shown the best performance for SA3 dye with 0.38% efficiency at AM 1.5 then SA2 with 0.22% and the last dye is SA1 with 0.09%, compared to control cell (N719) 5.4%.

scholarly journals Synthesis and Characterization of Copper Complex of Salicylaldehyde Benzoyl Hydrazone

2013 ◽  
Vol 29 ◽  
pp. 11-17 ◽  
Author(s):  
Sabita Shrestha ◽  
Sudha Maharjan
Keyword(s):  
Melting Point ◽  
Copper Complex ◽  
Analytical Procedure ◽  
Azomethine Nitrogen ◽  
Spectral Studies ◽  
Synthesis And Characterization ◽  
Tetrahedral Coordination ◽  
Coordination Environment ◽  
Benzoyl Hydrazone

 Copper complex of type [Cu(SBH)2] was synthesized and characterized by different analytical procedure and spectral studies. The complex was insoluble in common organic solvents and it has melting point in between 254-258°C. Infrared spectrum showed the bonding through enolic oxygen and azomethine nitrogen. The electronic spectral studies showed that the Cu(II) is in tetrahedral coordination environment. DOI: http://dx.doi.org/10.3126/jncs.v29i0.9231Journal of Nepal Chemical SocietyVol. 29, 2012Page: 11-17Uploaded date : 12/3/2013

Synthesis and Characterization of Biphenylnate Liquid Crystalline Polyurethanes

2010 ◽  
Vol 428-429 ◽  
pp. 158-161 ◽  
Author(s):  
Jian Feng Ban ◽  
Shao Rong Lu ◽  
Chen Xi Zhang
Keyword(s):  
Transition Temperature ◽  
Melting Point ◽  
Diethylene Glycol ◽  
Liquid Crystalline ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Flexible Chain ◽  
Ft Ir ◽  
Thermotropic Properties

A series of novel biphenylnate liquid crystalline polyurethanes (BLCPs) were synthesized by polyaddition reaction of 4,4’-dihydroxybiphenyl with 2,4-TDI(2,4-toluenediisocyanate) and diethylene glycol through changing the molar ratio of diphenol and diol. The thermotropic properties, the melting point (Tm) and the isotropization temperature (Ti) of the synthesized polyurethanes were characterized by FT-IR, DSC, POM and WXRD. The results of experiments showed that all of the polyurethane polymers exhibited thermotropic liquid crystalline properties between 130°C and 230°C. The transition temperature (Tm and Ti) decreased with an increase in the length of the flexible chain.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF C-HEXYL CALIX[4]RESORCINARENA FROM RESORCINOL-HEPTANAL CONDENSATION

2016 ◽  
Vol 10 (1) ◽  
pp. 49
Author(s):  
Desi Suci Handayani ◽  
Zainal Arifin Almaqqomul Amin ◽  
Triana Kusumaningsih ◽  
Abu Masykur
Keyword(s):  
Melting Point ◽  
Nmr Spectroscopy ◽  
Structural Analysis ◽  
Chemical Shifts ◽  
Condensation Reaction ◽  
Wave Number ◽  
Synthesis And Characterization ◽  
H Nmr ◽  
Brown Powder

<p>Synthesis of  C-hexyl  calix[4]resorcinarene  through condensation reaction between resorcinol  and  heptanal  with  HCl  catalyst  has  been  investigated.  Synthesis  conducted  by the ratio of resorcinol: heptanal (1:1) using reflux for 6 hours in ethanol. Structural  analysis of  the  product  was  done  by  FTIR  and 1 H-NMR  spectroscopy,  while  the  characterization was  done  by  determining  melting  point.  The  product  was  golden  brown  powder  with  a yield 99.43%  and  melting point more than 300 °C.  Structural analysis with FTIR and 1 HNMR  known  vibration  and  signals  characteristic  of  calix[4]resorcinarena  group, the vibrations of the CH  bridge. Vibration of CH bridge appearance at wave number 1445 cm<sup>-1</sup> and 1456  cm<sup>-1</sup>, while signal of CH bridge appearance at chemical shifts from  4.17 to 4.21 ppm.</p>

scholarly journals Synthesis and Characterization of Insensitive Energetic Plasticizer

2016 ◽  
Vol 20 (6) ◽  
pp. 11-17
Author(s):  
Woonghee Lee ◽  
Minjun Kim ◽  
Youngchul Park ◽  
Bumjae Lee
Keyword(s):  
Synthesis And Characterization ◽  
Energetic Plasticizer

scholarly journals Synthesis and characterization of novel substituted spiro[isobenzofuran-1(3H), 9’-xanthene]-3-ones

2005 ◽  
Vol 70 (7) ◽  
pp. 931-936 ◽  
Author(s):  
Sachin.V. Patel ◽  
Manish Patel ◽  
Rangan Patel
Keyword(s):  
Melting Point ◽  
Nmr Spectroscopy ◽  
Benzoic Acid ◽  
Synthesis And Characterization ◽  
Acidic Media ◽  
Melting Point Determination ◽  
Infra Red ◽  
Point Determination ◽  
Uv Visible

The ketoacid, 2-(4-diethylamino-2-hydroxybenzoyl)benzoic acid, prepared from N,N-diethyl-m-aminophenol and phthalic anhydride, was reacted with various substituted 3-[6-methoxybenzothiazol-2-yl]-4(3H)-quinazolinones in the presence of a dehydration condensing agent to afford novel spiro[isobenzofuran-1(3H),9?-xanthene]-3-ones. The benzothiazolyl quinazolinones were synthesized by reacting 2-amino-6-methoxybenzothiazole with various substituted benzoxazinones. All compounds were characterized by melting point determination, elemental analysis, infra- red spectroscopy NMR-spectroscopy and UV-visible sprectroscopy. All the fluoran compounds are colourless or nearly colourless and produce colour in the presence of acidic media.

Sign in / Sign up

Export Citation Format

Share Document