Effect of donor modification on the photo-physical and photo-voltaic properties of N-alkyl/aryl amine based chromophores

2019 ◽  
Vol 43 (23) ◽  
pp. 8970-8981 ◽  
Author(s):  
Manoj Jadhav ◽  
Jayraj V. Vaghasiya ◽  
Dinesh Patil ◽  
Saurabh S. Soni ◽  
Nagaiyan Sekar
Keyword(s):  
Acetic Acid ◽  
Conversion Efficiency ◽  
Alkyl Aryl ◽  
Emission Properties ◽  
Aryl Amine ◽  
Photo Voltaic ◽  
Electron Withdrawing Group ◽  
Donor Moiety

Six push–pull sensitizers (MD1 to MD6) having rhodanine-3-acetic acid acting as an electron withdrawing group and N-alkyl/aryl amine as a donor moiety were planned and prepared to rationalize the influence of donor alteration on absorption/emission properties and photon to current conversion efficiency (η).

Synthesis of 2-Aryl-1,1-Bis(Silyl)Alkenes Containing Alkyl(Aryl)Amine Groups

2014 ◽  
Vol 38 (8) ◽  
pp. 498-501
Author(s):  
Kazem Dindar Safa ◽  
Sanaz Nadimi ◽  
Maryam Alyari
Keyword(s):  
Alkyl Aryl ◽  
Aryl Amine ◽  
Amine Groups

Replacing Cyano (−C≡N) Group to Design Environmentally Friendly Fused-ring Electron Acceptors

2021 ◽  
Author(s):  
Chuang Yao ◽  
Yezi Yang ◽  
Lei Li ◽  
Maolin Bo ◽  
Cheng Peng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Performance ◽  
Cyano Group ◽  
Power Conversion ◽  
Electron Acceptors ◽  
Fused Ring ◽  
Electron Withdrawing Group

Cyano-group (−C≡N) is an electron-withdrawing group, which has been widely used to construct high-performance fused-ring electron acceptors (FREAs). Benefiting from these FREAs, the power conversion efficiency of organic solar cells...

Alkyl-Aryl Amine-Rich Molecules for CO2 Removal via Direct Air Capture

2020 ◽  
Author(s):  
Dharam Raj Kumar ◽  
Cornelia Rosu ◽  
Achintya R. Sujan ◽  
Miles A. Sakwa-Novak ◽  
Eric W. Ping ◽  
...  
Keyword(s):  
Co2 Removal ◽  
Alkyl Aryl ◽  
Aryl Amine ◽  
Direct Air Capture ◽  
Air Capture

scholarly journals Simple synthesis of 3-acyl-5-alkyl(aryl)isoxazoles from terminal alkynes and nitrates of alkaline metals or ammonium

2005 ◽  
Vol 3 (3) ◽  
pp. 370-376 ◽  
Author(s):  
Victor Rogachev ◽  
Victor Filimonov ◽  
Julya Kulmanakova ◽  
Mehman Yusubov ◽  
Wolfgang Bender
Keyword(s):  
Acetic Acid ◽  
Simple Synthesis ◽  
Terminal Alkynes ◽  
Alkyl Aryl ◽  
Alkaline Metals ◽  
General Synthesis

AbstractA simple and general synthesis of 3-acyl-5-alkyl(aryl)isoxazoles by reaction of terminal alkynes with nitrates in acetic acid in the presence of SO3 or alkaline salts is described.

Functionalization of porphyrins: towards the synthesis of bifunctional chelates for bismuth coordination

2010 ◽  
Vol 14 (05) ◽  
pp. 412-420 ◽  
Author(s):  
Zakaria Halime ◽  
Sébatien Balieu ◽  
Btissam Najjari ◽  
Mohammed Lachkar ◽  
Thierry Roisnel ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Ester ◽  
Functional Group ◽  
Acid Ethyl Ester ◽  
Phenyl Group ◽  
Ester Group ◽  
Reactive Functional Group ◽  
Amine Function ◽  
Electron Withdrawing Group ◽  
Bifunctional Chelates

We report the condensation of 3-chloromethyl-benzoyl chloride with two atropisomers ααββ and αβαβ of meso-5,10,15,20-tetrakis-(2-amino)phenylporphyrin (TAPP), followed by the reaction of the anion of either cyano-acetic acid ethyl ester or (4-nitro-phenyl)-acetic acid ethyl ester to prepare various pre-organized strapped porphyrins. These two reagents were selected as both allow the easy formation of the anion in the α position of the ester group while their electron-withdrawing group (EWG) can be further transformed in a reactive functional group. In the ααββ series, this reaction leads to three isomeric porphyrins differing only by the location of their ethoxycarbonyl groups, oriented either towards the center of the porphyrin or maintained outside of the cavity. In the αβαβ series, as expected, a single porphyrin is obtained in which both straps bear an ethoxycarbonyl group, precursor of a hanging carboxylic function and a cyano or a 4-nitro-phenyl group, which can be reduced to an amine function, suitable for the coupling on a biomolecule.

Use of mixed dyes in photogalvanic cells for solar energy conversion and storage: EDTA-methylene blue and thionine system

2005 ◽  
Vol 219 (5) ◽  
pp. 315-320 ◽  
Author(s):  
K. M. Gangotri ◽  
C Lal
Keyword(s):  
Methylene Blue ◽  
Acetic Acid ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Maximum Output ◽  
Photogalvanic Effect ◽  
Energy Conversion And Storage ◽  
And Storage ◽  
Photogalvanic Cell

The photogalvanic effect was studied in a photogalvanic cell containing Ethylene-diaminetetra-acetic acid as reductant and methylene blue and thionine as photosensitizers. The photopotential and photocurrent generated were 752.0 mV and 90.0 μA, respectively. The observed conversion efficiency was 0.43 per cent and the maximum output of cell was 67.68 μW. The photogalvanic cell can be used for 30 min in the dark. The effects of different parameters on electrical output of the cell were observed, and a mechanism for the generation of photocurrent in photogalvanic cells has also been proposed.

scholarly journals Synthesis of 5-hydroxy-10-R-benzo[a]phenazine-12-oxides by cyclization of 2-arylamino-1,4-naphthoquinone-1-oximes under the action of nitrating mixture

2020 ◽  
Vol 61 (2) ◽  
pp. 12-23
Author(s):  
Leonid M. Gornostaev ◽  
Keyword(s):  
Acetic Acid ◽  
Biological Activity ◽  
Nitrogen Oxide ◽  
Biologically Active ◽  
Alkyl Aryl ◽  
High Biological Activity ◽  
Fine Organic Synthesis ◽  
Wide Range ◽  
Fine Organic ◽  
Nitrosylsulfuric Acid

The synthesis of рolycyclic quinoid compounds, which exhibit a wide range of biological activity is one of the most promising and actively developing areas of the fine organic synthesis. Heterocyclic compounds including those that can be donors of nitrogen oxide NO occupy a special place among biologically active structures. These substances include a number of N-oxides, e.g., 1,2-diazet-1,2-dioxides, furoxanes and their benzo analogs, and N,N′-pyrazole dioxides. The reason for the high biological activity of N-oxides of nitrogenous heterocycles, which cannot easily generate nitrogen oxide NO may be their oxidative properties. Thus, N-oxides of nitrogenous heterocycles are of interest due to their high biological activity. We have developed an approach to the synthesis of 5-hydroxy-10-R-benzo[a]phenazine-12-oxides that contain the N-oxide fragment, which makes these compounds promising for studying their biological activity. We have demonstrated that the treatment of 2-arylamino-1,4-naphthoquinones with hydroxylamine in ethanol at 50-60 °С leads to selective oximation at position 1 and the formation of 2-arylamino-1,4-naphthoquinone-1-oximes. It has been shown that the interaction of 2-arylamino-1,4-naphthoquinone-1-oximes with the nitrating mixture in acetic acid results in the formation of 5-hydroxy-10-R-benzo[a]phenazine-12-oxides. Our work is a continuation of the study on the interactions of 2-arylamino-1,4-naphthoquinones and 4-arylamino-1,2-naphthoquinones with nitrosylsulfuric acid in acetic acid and the interaction of 2-alkyl(benzyl)amino-1,4-naphthoquinones with nitrosylsulfuric acid or nitrating mixture in acetic acid. The former reactions lead to the formation of 3-R-benzo[b]phenazine-6,11-dione-5-oxides and 9-R-benzo[a]phenazine-5,6-dion-7-oxides, respectively. The latter reaction leads to the formation of 2-alkyl(aryl)naphtho[2,1-d][1,3]oxazole-4,5-dione-4-oximes and 2-alkyl(aryl)-1-hydroxy-1H-naphtho[2,3-d]imidazole-4,9-dione as main products.

scholarly journals Theoretical Modification of Cyanidin as Sensitizers in Dye Sensitized Solar Cell (DSSC) Using Rhodanine Acetic Acid as Electron Withdrawing Group

2019 ◽  
Vol 4 (1) ◽  
pp. 34
Author(s):  
Sudarlin Sudarlin
Keyword(s):  
Acetic Acid ◽  
Solar Cell ◽  
Electron Density ◽  
Energy Gap ◽  
Electron Injection ◽  
Excited Electron ◽  
Dye Sensitized Solar Cell ◽  
Lumo Energy ◽  
Dye Sensitized ◽  
Electron Withdrawing Group

<p>Modification of cyanidin as sensitiser on Dye Sensitized Solar Cell (DSSC) has been carried out theoretically in this study using rhodanine acetic acid. The rhodanine acetic acid as electron withdrawing group can increase the electron density of the LUMO state, so injection of the excited electron to the semiconductor can also be increase. The theoretical method used is DFT/B3LYP theory by <em>NWChem</em> software. The calculation shows that the LUMO energy of cyanidin rhodanine acetic is higher than cyanidin, so electron injection to the conduction band of the semiconductor is easier. This condition is supported by reduced of HOMO-LUMO energy gap, so the range of the sunlight that can be involved in the electron excitation process is wider. In addition, the LUMO electron density of the cyanidin rhodanine acetic is localized at rhodanine acetic which makes the distance of the excited electron is closer to the semiconductor, thereby facilitating electron injection.</p>

scholarly journals 4H-Benzo[d][1,3]oxazin-4-ones and Dihydro Analogs from Substituted Anthranilic Acids and Orthoesters

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3555 ◽  
Author(s):  
Joel K. Annor-Gyamfi ◽  
Richard A. Bunce
Keyword(s):  
Acetic Acid ◽  
Electron Density ◽  
Benzene Ring ◽  
Aromatic Ring ◽  
Pyridine Ring ◽  
One Pot ◽  
Alkyl Aryl ◽  
Anthranilic Acids ◽  
Electron Donating Groups

A one-pot route to 2-alkyl and 2-aryl-4H-benzo[d][1,3]oxazin-4-ones (also known as 4H-3,1-benzoxazin-4-ones) has been developed and studied. The method involves the reaction of aryl-substituted anthranilic acids with orthoesters in ethanol catalyzed by acetic acid. Additionally, we have also investigated the reaction under microwave conditions. Not all of the substrates were successful in yielding the target heterocycles as some of the reactions failed to undergo the final elimination. This process led to the isolation of (±)-2-alkyl/aryl-2-ethoxy-1,2-dihydro-4H-benzo[d][1,3]oxazin-4-ones. The formation of the dihydro analogs correlated with the electron density on the aromatic ring: Electron-donating groups favored the 4H- benzo[d][1,3]oxazin-4-ones, while electron-withdrawing groups tended to favor the dihydro product. Substituting a pyridine ring for the benzene ring in the substrate acid suppressed the reaction.

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