scholarly journals 7-Alkoxy-appended coumarin derivatives: synthesis, photo-physical properties, aggregation behaviours and current–voltage (I–V) characteristic studies on thin films

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 10212-10223
Author(s):  
Abhijit Rudra Paul ◽  
Bapi Dey ◽  
Sudip Suklabaidya ◽  
Syed Arshad Hussain ◽  
Swapan Majumdar
Keyword(s):  
Thin Films ◽  
Carboxylic Acid ◽  
Physical Properties ◽  
Chemical Characteristics ◽  
Coumarin Derivatives ◽  
Design Synthesis ◽  
Electrical Switching ◽  
Physico Chemical ◽  
Current Voltage

In this article, we demonstrate the design, synthesis and physico-chemical characteristics, including electrical switching behaviours of long alkoxy-appended coumarin carboxylate/carboxylic acid in thin films.

scholarly journals Electrical Switching in Thin Films of Nandi Flame Seed Cuticles

2009 ◽  
Vol 2009 ◽  
pp. 1-10 ◽  
Author(s):  
Wycliffe K. Kipnusu ◽  
Gabriel Katana ◽  
Charles M. Migwi ◽  
I. V. S. Rathore ◽  
Joshua R. Sangoro
Keyword(s):  
Thin Films ◽  
Threshold Voltage ◽  
Reverse Bias ◽  
Synthetic Polymers ◽  
Switching Effect ◽  
Electrical Switching ◽  
Current Voltage ◽  
Poling Temperature ◽  
Current Voltage Characteristics ◽  
Switching Threshold Voltage

Current-voltage () characteristics of Nandi flame seed cuticles (NFSCs) have been studied as a function of irradiation, annealing, and poling temperature. The cuticles showed memory and threshold switching. Threshold voltage was about 5 V which is almost five times higher than observed in synthetic polymers. The threshold voltage increased to 6–8 V after irradiation and annealing depending on the duration of annealing or irradiation. After switching, conductivity increased by an order of . In reverse bias, increase of current was observed and the memory hysteresis loop was at higher conductivity than at the time of switching. Switching effect was minimized at a poling temperature of 370 K. Formation of semiquinones and quinoid radicals from phenolic compounds may have contributed to electrical switching and hysteresis effect.

scholarly journals Joint obtaining of 2,5-diethyl-3,4-dihydro-2H-pyran-2-methanol and sodium salt of 2,5-diethyl-3,4-dihydro-2H-pyran-2-carboxylic acid via CanniZZaro reaction

2009 ◽  
Vol 3 (2) ◽  
pp. 91-94
Author(s):  
Natalya Karpyak ◽  
◽  
Galyna Marshalok ◽  
Yaroslav Kovalskyi ◽  
Maria Fedevych ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Sodium Salt ◽  
Optimal Synthesis ◽  
Chemical Characteristics ◽  
Synthesis Conditions ◽  
Physico Chemical ◽  
Cannizzaro Reaction

Kinetic regularities of joint obtaining of 2,5-diethyl-3,4-dihydro-2H-pyran-2-methanol and sodium salt of 2,5-diethyl-3,4-dihydro-2H-pyran-2-carboxylic acid have been investigated. Optimal synthesis conditions have been established and physico-chemical characteristics of the main products have been determined.

Study of Physico-chemical Characteristics and Pharmacological Effects of 1-Ethyl-Salicyldene-bis-Ethylene-Diamine and Its Complex with Mn(II)

2019 ◽  
Vol 70 (7) ◽  
pp. 2534-2537
Author(s):  
Gladiola Tantaru ◽  
Mihai Apostu ◽  
Antonia Poiata ◽  
Mihai Nichifor ◽  
Nela Bibire ◽  
...  
Keyword(s):  
Schiff Base ◽  
Chemical Structure ◽  
Antimicrobial Activities ◽  
Ethylene Diamine ◽  
Chemical Characteristics ◽  
Gram Negative Bacteria ◽  
Pharmacological Effects ◽  
Physico Chemical ◽  
Anti Inflammatory ◽  
Inflammatory Effect

The paper presents the synthesis of a new complex combination of a Bis-Schiff base with Mn(II) ions with great potential for antimicrobial and anti-inflammatory activity. A new complex of the Salen-type ligand, 1-ethyl-salicylidene-bis-ethylene diamine was synthetized using Mn(II) ions. The chemical structure was confirmed through 1H-NMR and IR spectroscopy. The antimicrobial activities of the Bis-Schiff base and its complex were tested in comparison with Ampicillin, Chloramphenicol, Tetracycline, Ofloxacin and Nystatin. Those compounds were found to be active against Gram-positive or Gram-negative bacteria, and had an anti-inflammatory effect comparable to that of Indomethacin.

Sign in / Sign up

Export Citation Format

Share Document