Sreeraksha, Navya, K. Vinay, Y. Ravikiran, M. Revanasiddappa
{"title":"Recent Study of AC Electrical Behavior of Iron Nanoparticle Decorated Polymer Composite","authors":"Sreeraksha, Navya, K. Vinay, Y. Ravikiran, M. Revanasiddappa","doi":"10.9734/bpi/cpcs/v11/7511d","DOIUrl":"https://doi.org/10.9734/bpi/cpcs/v11/7511d","url":null,"abstract":"This study was based on current efforts and breakthroughs in customising nano-scale structures of nanostructured conducting polymer materials to improve electrical characteristics, as given in the reviews. The goal of this research is to investigate the a.c electrical response of a PANI/FeNP/Graphene composite made in-situ with adhathodavasica plant extract in an ice-cold bath. Techniques such as FT-IR and SEM were used to characterise the samples. The AC conductivity measurements were performed in the frequency range 5x101–5x106 Hz at 298K with an HIOKI 3532-50 LCR Hi-tester. The layered structure of graphene nanosheets in the composite is depicted in SEM photographs. The homogeneous distribution of iron nanoparticles throughout the PANI matrix, as well as imine stretching frequency, are attributes of IR spectral data. The investigation of a.c conductivity provides evidence for the composites' transport properties. With a stepwise increase in graphene content in the PANI/FeNP/Graphene composites, AC conductivity values increase.","PeriodicalId":308361,"journal":{"name":"Current Perspectives on Chemical Sciences Vol. 11","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125769707","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}
{"title":"Greener Synthesis of O, S, N-Nitrogen-Containing Heterocycles in Water, PEG, and Bio-Based Solvents","authors":"J. F. Campos, Sabine Berteina‐Raboin","doi":"10.9734/BPI/CPCS/V11/8301D","DOIUrl":"https://doi.org/10.9734/BPI/CPCS/V11/8301D","url":null,"abstract":"The solvents used in chemistry are a fundamental element of the environmental performance of processes in corporate and academic laboratories. Their influence on costs, health safety, and nature cannot be neglected. Quantitatively, solvents are the most abundant constituents of chemical transformations; therefore, acting on solvents and replacing standard solvents with safer products can have a great ecological impact. However, not all green solvents are suitable for the wide scope of organic chemistry reactions. A second point to consider is that 50% of pharmaceutical drugs are nitrogen heterocycles compounds. It therefore appeared important to provide an overview of the more ecological methodologies for synthesizing this class of compounds. In this review, all publications since 2000 that describe green reactions leading to the formation of nitrogen heterocycles using safe solvents were considered. We chose water, PEG, and bio-based solvents for their negligible toxicity. The synthesis of five-, six-, and seven-membered aromatic nitrogen heterocycles using green reactions reported in the literature to date is described. We describe biologically based solvents that have been reported as valid alternatives in the synthesis of N-heterocycles, which are; Meglumine, Gluconic acid, Ethyl lactate and Lactic acid.","PeriodicalId":308361,"journal":{"name":"Current Perspectives on Chemical Sciences Vol. 11","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130307537","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}