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Nonlinear optical response of D-π-A chromophores based on benzoxazin: quantum modification of π‑spacer 基于苯并恶嗪的D-π-A发色团的非线性光学响应:π间隔剂的量子修饰
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2022.3.001
A. Azaid, T. Abram, R. Kacimi, M. Raftani, Y. Khaddam, D. Nebbach, A. Sbai, T. Lakhlifi, M. Bouachrine
{"title":"Nonlinear optical response of D-π-A chromophores based on benzoxazin: quantum modification of π‑spacer","authors":"A. Azaid, T. Abram, R. Kacimi, M. Raftani, Y. Khaddam, D. Nebbach, A. Sbai, T. Lakhlifi, M. Bouachrine","doi":"10.5267/j.ccl.2022.3.001","DOIUrl":"https://doi.org/10.5267/j.ccl.2022.3.001","url":null,"abstract":"In this research article, four chromophores based on benzoxazine as the electron donor and tricyanovinyl dihydrofuran (TCF) as the electron acceptor have been designed to investigate the nonlinear optical (NLO) response. The geometric and electronic structures, absorption spectra, NBO analysis, and nonlinear optical response have been calculated by employing density functional theory (DFT) at PBEPBE/6-31G (d,p). The new design of chromophores has been proposed by the structural modification of π-spacers/conjugated systems. The DFT and TD−DFT computations at CAM−B3LYP/6−31G (d,p) have been performed to shed light on the influences of structural modification on the NLO properties. The absorption wavelength in different organic solvents, polarizability (α), and hyperpolarizability (β) are all determined. A strong NLO response indicates that this family of organic compounds with a D-π-A structure exhibits large first hyperpolarizability βtot values, these values are much greater than ones of urea. This theoretical model may be used to design other chromophores for usage in electro-optics.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89423245","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}
引用次数: 2
Eco-friendly ultraviolet spectrophotometric methods for the determination of clotrimazole and tinidazole in bulk and ointment dosage form 环保型紫外分光光度法测定克霉唑和替硝唑散装剂型和软膏剂型的含量
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2021.11.001
K. Kannaiah, Abimanyu Sugumaran
{"title":"Eco-friendly ultraviolet spectrophotometric methods for the determination of clotrimazole and tinidazole in bulk and ointment dosage form","authors":"K. Kannaiah, Abimanyu Sugumaran","doi":"10.5267/j.ccl.2021.11.001","DOIUrl":"https://doi.org/10.5267/j.ccl.2021.11.001","url":null,"abstract":"Analyzing a drug over its overlapped spectra utilizes sophisticated instruments and more toxic solvents, which has a deleterious effect on environmental safety. There is an alarming need to develop a simple, novel, and cost-effective method for determining combined substances that are non-toxic to the environment. So, the study aimed to develop four simple, fast and eco-friendly spectrophotometric techniques for quantifying clotrimazole and tinidazole in bulk and ointment dosage form. Stock solutions produced at concentrations of 7 to 13 and 17.5 to 32.5 µg/mL of clotrimazole and tinidazole in 10% v/v ethanol and scanned in the UV-visible range 200-450 nm, and used for all methods. The methods were validated according to the International Council for Harmonization guidelines and found to be within limits. Additionally, the outliers were tested by using the Grubbers test and found within limits. Finally, green evaluation studies show that the method is more environmentally friendly, as confirmed by four assessment tools.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75461676","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}
引用次数: 3
Synthesis, characterization, and antibacterial activity of azodyes incorporated acridine chromophore and their applications in polyester printing 偶氮杂化吖啶发色团的合成、表征、抗菌活性及其在聚酯印花中的应用
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2021.9.002
K. Hassan, Elkhabiry Shaban, G. Elhaddad, Asmaa B. Sallam, I. Sayed
{"title":"Synthesis, characterization, and antibacterial activity of azodyes incorporated acridine chromophore and their applications in polyester printing","authors":"K. Hassan, Elkhabiry Shaban, G. Elhaddad, Asmaa B. Sallam, I. Sayed","doi":"10.5267/j.ccl.2021.9.002","DOIUrl":"https://doi.org/10.5267/j.ccl.2021.9.002","url":null,"abstract":"A series of azo dyes incorporated acridine chromophore labelled as 8 (a-d), 10 (a, b), 12 and 14 were prepared in very good yields starting from 9-chloroacridine 1 followed by amination, diazotization and coupling either with rhodanine analogues 6 (a, b) or other coupling partners 9 (a, b), 11 and 13. FT-IR, 1H NMR, and mass spectroscopic analysis were used to establish the structures of the produced azo dispersed dyes. Moreover, the synthesized azo dyes were used to prepare pastes that were used to print polyester fabric using classic silk-screen printing techniques. The dyes were tested for color strength and fastness properties, and they showed good fastness resistance to washing, rubbing, and perspiration, as well as fastness to sublimation and light. The dyes were further screened for their in vitro antibacterial activity against both Gram (+) and Gram (-) bacterial species. Most of them showed promising activities against these tested organisms.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81003548","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}
引用次数: 2
Efficiency of maturation oxidation ponds as a post-treatment technique of wastewater 成熟氧化池作为废水后处理技术的效果研究
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2022.4.005
M. Kaid, A. Ali, Adel Q. S. Shamsan, Sara M. Younes, S. A. Abdel-Raheem, Mokhtar A. Abdul-Malik, W. M. Salem
{"title":"Efficiency of maturation oxidation ponds as a post-treatment technique of wastewater","authors":"M. Kaid, A. Ali, Adel Q. S. Shamsan, Sara M. Younes, S. A. Abdel-Raheem, Mokhtar A. Abdul-Malik, W. M. Salem","doi":"10.5267/j.ccl.2022.4.005","DOIUrl":"https://doi.org/10.5267/j.ccl.2022.4.005","url":null,"abstract":"In developing countries, it still suffers from endless problems regarding wastewater treatment and the problem of choosing the appropriate treatment system due to lack of proper technology and weak economy. This study highlights the maturity oxidation pond (stabilization) of small communities as an effective, low-cost and simple post-treatment technique for treating wastewater before discharging into an aquatic ecosystem. The Rashid plant was cited as a treatment plant in the city of Rashid-ElBeheira Governorate - Egypt as a model plant for applying this technology in treatment of wastewater. This work also includes the studying of the relationship between climatic conditions, physicochemical parameters and biomass of microorganisms to evaluate the efficiency of its performance.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86138347","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}
引用次数: 14
An overview on synthesis and reactions of coumarin based compounds 香豆素类化合物的合成与反应综述
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2021.9.007
M. Tolba, M. A. A. ul-Malik, A. El-Dean, A. Geies, S. M. Radwan, R. Zaki, M. Sayed, S. K. Mohamed, S. A. Abdel-Raheem
{"title":"An overview on synthesis and reactions of coumarin based compounds","authors":"M. Tolba, M. A. A. ul-Malik, A. El-Dean, A. Geies, S. M. Radwan, R. Zaki, M. Sayed, S. K. Mohamed, S. A. Abdel-Raheem","doi":"10.5267/j.ccl.2021.9.007","DOIUrl":"https://doi.org/10.5267/j.ccl.2021.9.007","url":null,"abstract":"Oxygen-containing heterocycles are largely distributed in natural and synthetic compounds. Coumarins are among the most famous heterocycles which possess one oxygen atom in their rings. Coumarins are classified as multifunctional scaffold and are used as anti-oxidant reagents, anti-inflammatory, anti-microbial, anti-fungal, anti-HIV active, analgesic, anti-histaminic, insecticides, dyes, herbicides, sensitizers, perfumes, cosmetics and food additives. Due to their diverse applications in industrial and pharmaceutical fields, many chemists have given significant interest to these compounds. Herein, the review highlights various methods for the synthesis and interactions of coumarin moiety as one of the most efficient categories of heterocycles.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91368120","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}
引用次数: 24
Synthesis, reactions, and applications of pyrimidine derivatives 嘧啶衍生物的合成、反应及应用
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2021.8.002
M. Tolba, A. El-Dean, Mostafa Ahmed, R. Hassanien, M. Sayed, R. Zaki, S. K. Mohamed, Sameh A. Zawam, S. A. Abdel-Raheem
{"title":"Synthesis, reactions, and applications of pyrimidine derivatives","authors":"M. Tolba, A. El-Dean, Mostafa Ahmed, R. Hassanien, M. Sayed, R. Zaki, S. K. Mohamed, Sameh A. Zawam, S. A. Abdel-Raheem","doi":"10.5267/j.ccl.2021.8.002","DOIUrl":"https://doi.org/10.5267/j.ccl.2021.8.002","url":null,"abstract":"Pyrimidine compounds continue to attract great interest in the field of organic synthesis due to their various chemical and biological applications observed, especially in recent times. As a result, this review covering some periods from 1957 to 2021 has been prepared to discuss some of the structural pathways of these compounds as well as some of their interactions and applications.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90399161","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}
引用次数: 24
Antibacterial and antifungal studies of Zn-CaB as a promising antimicrobial agent incorporated health care and cosmetic products 锌- cab作为一种有前途的抗菌剂在保健和化妆品中的抗菌和抗真菌研究
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2022.2.003
A. Arunachalam, S. Induja, V. Parthasarathy, P. Raghavan
{"title":"Antibacterial and antifungal studies of Zn-CaB as a promising antimicrobial agent incorporated health care and cosmetic products","authors":"A. Arunachalam, S. Induja, V. Parthasarathy, P. Raghavan","doi":"10.5267/j.ccl.2022.2.003","DOIUrl":"https://doi.org/10.5267/j.ccl.2022.2.003","url":null,"abstract":"The Zinc doped calcium borate (Zn-CaB) was synthesized by the co-precipitation method. Zinc was known to exhibit a good antimicrobial effect without causing any environmental issues. However, the antimicrobial activity of zinc is relatively low as compared to silver or copper analogues. In the present investigation, an attempt was made to incorporate zinc in the matrix of calcium borates to enhance the antibacterial effect. Cosmetic products were made using the zinc-calcium-borates and the antibacterial/antifungal activity was evaluated and compared with the commercial products. The studies revealed that the antibacterial activity of Zn-CaB was equivalent to that commercially available product with a maximum of 99% reduction in bacterial strains and above 95% reduction in fungal strains. An attempt was made to incorporate a bacteriostatic effect on fabric by adding zinc-calcium-borates to detergent which exhibited prolonged antibacterial activity, even after 3 washing cycles. The cosmetic products were also evaluated for their thermal and photostability.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78766075","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}
引用次数: 0
Antibacterial, antioxidant and anticancer of fermentation by Bacillus subtilis on bagasse and wheat bran 枯草芽孢杆菌对甘蔗渣和麦麸发酵的抑菌、抗氧化和抗癌作用
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2022.5.003
M. El-Mongy, R. Hamouda, Salah G. Ali, Ehab A. Sedeek, E. Mahmoud
{"title":"Antibacterial, antioxidant and anticancer of fermentation by Bacillus subtilis on bagasse and wheat bran","authors":"M. El-Mongy, R. Hamouda, Salah G. Ali, Ehab A. Sedeek, E. Mahmoud","doi":"10.5267/j.ccl.2022.5.003","DOIUrl":"https://doi.org/10.5267/j.ccl.2022.5.003","url":null,"abstract":"Bagasse and wheat bran are agrowaste and cause different environmental problems. These compounds contain highly valuable compounds that can be recycled by microorganisms. This work was carried out to evaluate the effect of fermentation by Bacillus subtilis on biological activity and chemical components of bagasse and wheat bran. The results demonstrated the antimicrobial activity of fermented wheat bran and bagasse against eight selected microbial pathogens exhibited high activity of fermented wheat bran and mix, fermented bagasse showed less antimicrobial activity. Fermented wheat bran and bagasse samples had the highest antioxidant activity values (16.45 and 14.94 %) in comparison with the unfermented samples (6.20 and 3.97 %) respectively. Concentration of protein, ash, oil, and carbohydrates in fermented wheat bran were 5.34 %, 7.30%, 2.36% and 10.6%, whereas in bagasse they were 2.45%, 1.68%, 1.51% and 3.25 respectively. The moisture contents in bagasse 73.1% were more than in wheat bran 63.88%.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73166448","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}
引用次数: 0
Silver-calcium-borates as better replacement for conventional organic antimicrobials in cosmetic products 硼酸银钙作为化妆品中传统有机抗菌剂的更好替代品
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2021.8.003
A. Arunachalam, S. Induja, V. Parthasarathy, P. Raghavan
{"title":"Silver-calcium-borates as better replacement for conventional organic antimicrobials in cosmetic products","authors":"A. Arunachalam, S. Induja, V. Parthasarathy, P. Raghavan","doi":"10.5267/j.ccl.2021.8.003","DOIUrl":"https://doi.org/10.5267/j.ccl.2021.8.003","url":null,"abstract":"Microbes generally develop resistance towards organic antibacterial agents like ampicillin, Sulfonamides, methicillin, etc., and progressively new drugs are being invented to replace them. Hence, replacement of organic antibacterial agents with inorganic analogues requires constant research and the present investigation reports alternatives for conventional antimicrobial agents like methylparaben, diazolidinyl urea, etc., in the cosmetic products with silver incorporated calcium borates. The chemically synthesized silver-calcium borates have been analyzed for phase purity using powder XRD analysis, nature of bonding using FTIR vibrations, and morphology using SEM. The antibacterial and antifungal studies were carried out for the novel inorganic silver-calcium borates incorporated cosmetic products. The products were also subjected to thermal & photostability studies and found to be comparable with that of commercially available products. A minimum quantity of 3 ppm of silver-calcium borate concentration was required to bring about nearly 100% bacterial reduction in the cosmetic products.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87651294","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}
引用次数: 1
Synthesis of 3-(2-(subsituted-(trifluoromethyl)phenylamino)acetyl)-2H-chromen-2-one derivatives as new anticancer agents 3-(2-(取代-(三氟甲基)苯胺)乙酰基)- 2h -2- 1衍生物的合成
Current Chemistry Letters Pub Date : 2022-01-01 DOI: 10.5267/j.ccl.2021.8.004
Anees Pangal, Yusufi Mujahid, Bajarang Desai, J. Shaikh, K. Ahmed
{"title":"Synthesis of 3-(2-(subsituted-(trifluoromethyl)phenylamino)acetyl)-2H-chromen-2-one derivatives as new anticancer agents","authors":"Anees Pangal, Yusufi Mujahid, Bajarang Desai, J. Shaikh, K. Ahmed","doi":"10.5267/j.ccl.2021.8.004","DOIUrl":"https://doi.org/10.5267/j.ccl.2021.8.004","url":null,"abstract":"Under solvent free conditions and in presence of a base 3-(2-(subsituted-(trifluoromethyl)phenylamino)acetyl)-2H-chromen-2-one derivatives were synthesized by grinding technique. Structural investigations were carried out with IR studies, HRMS, 1HNMR and 13CNMR. The compounds were checked for their in vitro anticancer activities against three different human cancer cell lines viz human breast cancer cell line (MCF-7), human cervical cancer cell line (HeLa) and human oral squamous cell carcinoma (SCC-40) using SRB method. All the title compounds showed low toxicity towards non-malignant PBMC cells indicating their tumour selectivity. The compounds exhibited good in vitro anti-proliferative potency at lower concentrations against HeLa and MCF-7 cell lines and remain moderately active against SCC-40.","PeriodicalId":10942,"journal":{"name":"Current Chemistry Letters","volume":"317 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82910206","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}
引用次数: 1
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