scholarly journals Formation of Carbon-Silicon Bond and Effect of Silicon on Organic Reactions

2020 ◽  
Vol 11 (1) ◽  
pp. 101-105
Author(s):  
Ashis K Sarker
Keyword(s):  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Bond Formation ◽  
Research Work ◽  
Engineering Science ◽  
Proton Nmr Spectroscopy ◽  
Visible Spectroscopy ◽  
Ft Ir ◽  
Uv Visible ◽  
Ft Ir Spectroscopy

In this work, we report carbon-silicon bond formation in thiophene, assisted with alkylated silylchloride. The formylation reaction of silylated thiophene has been discussed and achieved 61% overall yield of reactions. The compounds obtained are characterized quantitatively and qualitatively by using elemental analysis, FT-IR spectroscopy, UV/Visible spectroscopy, and proton NMR spectroscopy. This research work will boost chemists to make the carbon-silicon bond and utilize them in various applications. Journal of Engineering Science 11(1), 2020, 101-105

A pyridinium modified β-cyclodextrin: an ionic supramolecular ligand for palladium acetate in C–C coupling reactions in water

2016 ◽  
Vol 18 (20) ◽  
pp. 5518-5528 ◽  
Author(s):  
Raihana Imran Khan ◽  
Kasi Pitchumani
Keyword(s):  
Mass Spectrometry ◽  
Light Scattering ◽  
Ir Spectroscopy ◽  
Water Soluble ◽  
Palladium Acetate ◽  
Coupling Reactions ◽  
Visible Spectroscopy ◽  
Ft Ir ◽  
Uv Visible ◽  
Ft Ir Spectroscopy

An ionic Pd(ii) complex stabilized by a water soluble pyridinium modified β-cyclodextrin was prepared and characterized by NMR, mass spectrometry, FT-IR spectroscopy, UV-visible spectroscopy and DLS (dynamic light scattering).

scholarly journals Wool Fabric Treated With Eco – Friendly Insect Repellent

2017 ◽  
Vol 25 (0) ◽  
pp. 102-105
Author(s):  
Silva Kreševič Vraz ◽  
Bojana Vončina
Keyword(s):  
Ir Spectroscopy ◽  
Research Work ◽  
Curing Temperature ◽  
Wool Fabric ◽  
Insect Repellent ◽  
Textile Materials ◽  
Separate Treatment ◽  
Ft Ir ◽  
Time Periods ◽  
Ft Ir Spectroscopy

In the research work presented, fabric made of wool was grafted with β-cyclodextrine (β-CD) using 1, 2, 3, 4 butanetetracarboxlic acid (BTCA) as a polyfunctional reagent. To reduce the grafting curing temperature, which could damage the wool fabric if too high, cyanamide (CA) in combination with ammonium dihydrogen phosphat (ADHP) were used as catalysts. The presence of cedar oil applied onto textile materials was determined by ATR FT-IR spectroscopy, as well as estimation of the add-on of cedar oil with the gravimetric approach, respectively. Finally the reduction in moths after being exposed to wool treated with a separate treatment formulation i.e. β-CD, cedar oil, and β-CD in combination with cedar oil was assessed visually after different time periods. Results showed that the wool after being treated with β-CD in combination with cedar oil shows significantly prolonged moth oppression activity compared to the wool treated with cedar oil only.

scholarly journals Congo Red and Nigrosine Dye Degradation using Dimethyl Dioxirane as an Oxidising Agent

2021 ◽  
Vol 37 (5) ◽  
pp. 1221-1228
Author(s):  
S. Vinotha ◽  
A.Leema Rose
Keyword(s):  
Congo Red ◽  
Room Temperature ◽  
Functional Group ◽  
Dye Degradation ◽  
Visible Spectroscopy ◽  
Before And After ◽  
Ft Ir ◽  
Combined Action ◽  
Uv Visible ◽  
Ft Ir Spectroscopy

The advanced oxidation of Congo red (CR) and Nigrosine (NI) using the combined action of dimethyl dioxirane as an oxidising agent is described in this study. The effects of several parameters, such as the concentration of the oxidising agent, the initial dye concentration, and the pH, have been investigated. At room temperature, the oxidising agent dimethyl dioxirane was employed to test the degradation of CR and NI dyes. On the degradation efficiency of CR and NI, pH’s effects, oxidising agent, and initial dye concentration were examined. The absorbance of CR and NI dyes before and after degradation was measured using UV-visible spectroscopy. The functional group existing in the dyes before and after degradation was determined using FT-IR spectroscopy.

scholarly journals Results obtained by investigating saffron ussing FT-IR spectroscopy

2016 ◽  
Vol 73 (2) ◽  
pp. 238
Author(s):  
Luisa Andronie ◽  
Aurelia Coroian ◽  
Vioara Miresan ◽  
Ioana Pop ◽  
Camelia Raducu ◽  
...  
Keyword(s):  
Biological Activity ◽  
Ir Spectroscopy ◽  
Ir Spectra ◽  
Ir Spectrum ◽  
Research Work ◽  
Ft Ir ◽  
Pharmaceutical Properties ◽  
Ft Ir Spectroscopy

The biological activity and the pharmaceutical properties of plants are strongly dependent on their structure.The FT-IR spectra of saffron (commercial) have been obtained. The vibrational fundamentals from the IR spectrum, were analyzed  and assigned acoording to the available literature. In the present research work the genus saffron is selected because it is famous in wold as foods and also as medicine.

Synthesis and Capacitance of Multi-Walled Carbon Nanotube/Polyaniline Nanocomposites

2013 ◽  
Vol 834-836 ◽  
pp. 108-111
Author(s):  
Qi Guan Wang ◽  
Wei Zhou ◽  
Su Min Wang ◽  
Wen Zhi Zhang ◽  
Jian Ping Li ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Carbon Nanotube ◽  
Ir Spectroscopy ◽  
Electrochemical Polymerization ◽  
Visible Spectroscopy ◽  
Multi Walled Carbon Nanotube ◽  
Pani Composite ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

We report on the synthesis and electrochemical properties of multi-walled carbon nanotube (MWNT)/polyaniline (PANI) nanocomposites. The MWNT/PANI composite was prepared through electrochemical polymerization and is confirmed by ultraviolet-visible spectroscopy (UV-vis) spectroscopy and Fourier transform infrared (FT-IR) spectroscopy. The MWNT/PANI nanocomposites show a specific capacitance value as high as 463 F/g.

Reductive electropolymerization of N-methyl-3-pyridylethynyl-porphyrins

2015 ◽  
Vol 51 (3) ◽  
pp. 519-521 ◽  
Author(s):  
Sung-Chou Huang ◽  
Ching-Yao Lin
Keyword(s):  
Cyclic Voltammetry ◽  
Ir Spectroscopy ◽  
Theoretical Calculations ◽  
Ft Ir ◽  
Uv Visible ◽  
Ft Ir Spectroscopy

The first reductive electropolymerization of porphyrins was studied by cyclic voltammetry, UV-visible and FT-IR spectroscopy, and theoretical calculations.

scholarly journals Unexpected ring-opening of 2,3-dihydropyridines

2021 ◽  
Author(s):  
Michael-Hannes Hoffelner ◽  
Werner Seebacher ◽  
Marcel Kaiser ◽  
Pascal Mäser ◽  
Eva-Maria Pferschy-Wenzig ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Ring Opening ◽  
Biological Activities ◽  
Open Chain ◽  
X Ray ◽  
Separation Of Isomers ◽  
Ft Ir ◽  
New Compounds ◽  
Ft Ir Spectroscopy

AbstractThe reaction of 2,3-dihydropyridines with sulfonyl halides surprisingly yielded open chain dienes with sulfonylimine structure. The products were specific out of several possible isomers and, therefore, a separation of isomers was not necessary. All new compounds were characterized using FT-IR spectroscopy, HRMS, and NMR spectroscopy. A bicyclic by-product from the reaction of a 2,3-dihydropyridine with mesyl chloride was isolated and its structure elucidated using a single X-ray crystal analysis. Some biological activities, like antimicrobial and cytotoxic properties were investigated. Graphic abstract

Preparation and Electrochemical Properties of Poly(p-Chloroaniline)

2013 ◽  
Vol 634-638 ◽  
pp. 1981-1984
Author(s):  
Chun Yu Zhang ◽  
Hai Jun Niu ◽  
Lin Zhang ◽  
Xu Duo Bai
Keyword(s):  
Aqueous Solution ◽  
Ir Spectroscopy ◽  
Electrochemical Properties ◽  
Supporting Electrolyte ◽  
Linear Potential ◽  
Scan Rate ◽  
Ft Ir ◽  
Uv Visible ◽  
Electronic Microscope ◽  
Ft Ir Spectroscopy

Polymerization of p-chloroaniline (CA) was achieved electrochemically in aqueous solution containing H2SO4 as supporting electrolyte. The films were obtained by applying sequential linear potential scan rate 20mV/s between -0.5 to 1.5V versus Ag/AgCl electrode. The polymer was characterized by UV-visible and FT-IR spectroscopy. We observed the morphologies of PCA films through the scanning electronic microscope (SEM), showing island protruding structure. The Tafel curves showed that PCA can be used as anti-corrosion material.

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