Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/11340d
M. Chemek, W. Taouali, S. B. Amor, A. H. Said, K. Alimi
In this chapter, photophysical properties of newly synthesized oligophenylene derivatives are studied through ultraviolet-visible (UV-vis), steady-state, and time-resolved photoluminescence spectroscopies. The investigated oligophenylene derivatives are obtained by Knoevenagel condensation of the synthesized oligo[4-(methoxyphenyl) acetonitrile] (OMPA) with various chemical groups. Under the chemical modifications, significant changes in the photo-physical properties were observed. Indeed, the chemical insertion of the dimethyl-amine group on the backbone of the OMPA oligomer induces a decrease in the optical band gap and a red-shift of the absorption and photoluminescence properties, which is a signature of an intermolecular charge transfer that occurred under the chemical modification. Meanwhile, the chemical insertion of aromatic chemical groups (anthracene and thiophene) permitting to improve the luminescence properties of the synthesized oligophenylene. The chemical insertion of the focused chemical groups induces a change in the thermal properties.
{"title":"Study on Photo-physical Properties of News Synthesized Olygophenylene Derivatives","authors":"M. Chemek, W. Taouali, S. B. Amor, A. H. Said, K. Alimi","doi":"10.9734/bpi/nicb/v1/11340d","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/11340d","url":null,"abstract":"In this chapter, photophysical properties of newly synthesized oligophenylene derivatives are studied through ultraviolet-visible (UV-vis), steady-state, and time-resolved photoluminescence spectroscopies. The investigated oligophenylene derivatives are obtained by Knoevenagel condensation of the synthesized oligo[4-(methoxyphenyl) acetonitrile] (OMPA) with various chemical groups. Under the chemical modifications, significant changes in the photo-physical properties were observed. Indeed, the chemical insertion of the dimethyl-amine group on the backbone of the OMPA oligomer induces a decrease in the optical band gap and a red-shift of the absorption and photoluminescence properties, which is a signature of an intermolecular charge transfer that occurred under the chemical modification. Meanwhile, the chemical insertion of aromatic chemical groups (anthracene and thiophene) permitting to improve the luminescence properties of the synthesized oligophenylene. The chemical insertion of the focused chemical groups induces a change in the thermal properties.","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84048037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/12157d
N. Flores-Holguín, J. Frau, D. Glossman-Mitnik
{"title":"Study on the Computational Nutraceutics of a Citrus Flavonoid: An Approach Using Conceptual Density Functional Theory (CDFT)","authors":"N. Flores-Holguín, J. Frau, D. Glossman-Mitnik","doi":"10.9734/bpi/nicb/v1/12157d","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/12157d","url":null,"abstract":"","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85108545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/11645d
S. Shanthi, K. Priya
Photodegradation has been widely employed in water and waste water treatment Of all the methods like froth flotation coagulation etc., photodegradation appears to offer the best prospects for overall treatment of dyestuff effulent. Solar photo catalytic oxidation technique using semiconductors like TiO2, ZnO etc has a land mark in the field of waste water treatment especially for the removal of organics and dye stuffs. Of the various semiconductors, TiO2 is a promising material. Utilisation of solar energy makes the process green and economically viable. In places where we don’t have enough solar radiation we are in need of other sources of energy.In the present study,photodegradation of aniline blue and crystal violet dyes from aqueous solutions of their binary mixture was carried out using TiO2 as photocatalyst. By carrying out photodegradation, under different experimental conditions, the optimum values of experimental parameters required for maximum degradation was found out. The studies were conducted utilising a variety of energy sources, including solar and microwave radiation. The rate constant and activation parameters were calculated using degradation studies conducted at temperatures of 250°C, 350°C, and 450°C. In every way except duration and dose of photo catalyst, both energy sources cause deterioration in the same way. Microwave radiation takes less time than solar radiation, however microwave radiation requires a higher dose of photo catalyst. These findings will aid in the design of industrial effluent treatment plants.
{"title":"Study on Photo Degradation of Dyes from Aqueous Solutions of their Binary Mixture, using TiO 2 as the Oxidant with Different Sources of Energy","authors":"S. Shanthi, K. Priya","doi":"10.9734/bpi/nicb/v1/11645d","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/11645d","url":null,"abstract":"Photodegradation has been widely employed in water and waste water treatment Of all the methods like froth flotation coagulation etc., photodegradation appears to offer the best prospects for overall treatment of dyestuff effulent. Solar photo catalytic oxidation technique using semiconductors like TiO2, ZnO etc has a land mark in the field of waste water treatment especially for the removal of organics and dye stuffs. Of the various semiconductors, TiO2 is a promising material. Utilisation of solar energy makes the process green and economically viable. In places where we don’t have enough solar radiation we are in need of other sources of energy.In the present study,photodegradation of aniline blue and crystal violet dyes from aqueous solutions of their binary mixture was carried out using TiO2 as photocatalyst. By carrying out photodegradation, under different experimental conditions, the optimum values of experimental parameters required for maximum degradation was found out. The studies were conducted utilising a variety of energy sources, including solar and microwave radiation. The rate constant and activation parameters were calculated using degradation studies conducted at temperatures of 250°C, 350°C, and 450°C. In every way except duration and dose of photo catalyst, both energy sources cause deterioration in the same way. \u0000Microwave radiation takes less time than solar radiation, however microwave radiation requires a higher dose of photo catalyst. These findings will aid in the design of industrial effluent treatment plants.","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85840048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/3429f
K. Laxmi
{"title":"Antiepileptic Drug Phenobarbital: A Chemsketch Study","authors":"K. Laxmi","doi":"10.9734/bpi/nicb/v1/3429f","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/3429f","url":null,"abstract":"","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80659857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/3698f
S. Manchanda
{"title":"A Brief Study of Natural Drug Camptothecin","authors":"S. Manchanda","doi":"10.9734/bpi/nicb/v1/3698f","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/3698f","url":null,"abstract":"","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87576833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/12155d
N. Flores-Holguín, J. Frau, D. Glossman-Mitnik
{"title":"About the Computational Prediction of the Maximum Absorption Wavelengths of Indigo in Different Solvents with the Minnesota Family of Density Functionals","authors":"N. Flores-Holguín, J. Frau, D. Glossman-Mitnik","doi":"10.9734/bpi/nicb/v1/12155d","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/12155d","url":null,"abstract":"","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"160 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77494466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/8552d
Salim Koraichi, R. Belghiche, M. Abbessi
The adsorption of a dye, methylene blue, by a cesium Dawson heteropolyanion HCs5P2W18O62.16H2O, was investigated. In heterogeneous catalysis, adsorption is a crucial step. Adsorption can also be used as a separation process to remove colours that may be present in industrial waste. The first part deals with the synthesis and the characterization of adsorbent. The experimental parameters affecting the adsorption were then optimized. The regeneration of the adsorbent was finally studied. The optimal yield found was 88% for a MB concentration of 25 mg/L and an adsorbent mass of 0.25 g. The yield of the regeneration was 98%, at 80°C. Adsorption isotherms linearization has showed that it is the Langmuir model best suited to describe the considered phenomenon, thus, reflecting a good distribution of active sites across the adsorbent surface.
{"title":"Study on Synthesis and Application of HCs5P2W18O62.16H2O to Adsorption of Organic Matter: Methylene Blue","authors":"Salim Koraichi, R. Belghiche, M. Abbessi","doi":"10.9734/bpi/nicb/v1/8552d","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/8552d","url":null,"abstract":"The adsorption of a dye, methylene blue, by a cesium Dawson heteropolyanion HCs5P2W18O62.16H2O, was investigated. In heterogeneous catalysis, adsorption is a crucial step. \u0000Adsorption can also be used as a separation process to remove colours that may be present in industrial waste. The first part deals with the synthesis and the characterization of adsorbent. The experimental parameters affecting the adsorption were then optimized. The regeneration of the adsorbent was finally studied. The optimal yield found was 88% for a MB concentration of 25 mg/L and an adsorbent mass of 0.25 g. The yield of the regeneration was 98%, at 80°C. Adsorption isotherms linearization has showed that it is the Langmuir model best suited to describe the considered phenomenon, thus, reflecting a good distribution of active sites across the adsorbent surface.","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74005142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/2890f
A. Sebaa, A. Marouf, N. Kambouche, A. Derdour
{"title":"Phytochemical Screening and Evaluation in vitro of Antioxidant and Antimicrobial Activities of Organic Extracts from Ammodaucus leucotrichus Coss & Dur Fruit from Algerian Sahara","authors":"A. Sebaa, A. Marouf, N. Kambouche, A. Derdour","doi":"10.9734/bpi/nicb/v1/2890f","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/2890f","url":null,"abstract":"","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87241668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-20DOI: 10.9734/bpi/nicb/v1/12156d
N. Flores-Holguín, J. Frau, D. Glossman-Mitnik
{"title":"Study on the Molecular Reactivity of the Dansylglycine in Water and Dioxane Estimated through Conceptual DFT","authors":"N. Flores-Holguín, J. Frau, D. Glossman-Mitnik","doi":"10.9734/bpi/nicb/v1/12156d","DOIUrl":"https://doi.org/10.9734/bpi/nicb/v1/12156d","url":null,"abstract":"","PeriodicalId":19147,"journal":{"name":"New Innovations in Chemistry and Biochemistry Vol. 1","volume":"133 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75760325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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