The Experts below are selected from a list of 84471 Experts worldwide ranked by ideXlab platform
Arup Datta - One of the best experts on this subject based on the ideXlab platform.
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Synthesis of Substituted Pyrimidinones Catalyzed by Boric Acid and Glycerol in Aqueous Medium
Synthetic Communications, 2020Co-Authors: Chhanda Mukhopadhyay, Arup DattaAbstract:Abstract An expeditious one-pot synthesis of substituted pyrimidinone derivatives with aromatic aldehydes, cyclopentanone, and urea (or thiourea) was developed with boric acid (10 mol%) and glycerol (0.1 mL) in Aqueous Medium at 45–50 °C. The methodology is simple, highly efficient, and high yielding. The idea behind this methodology is that boric acid, being a weak acid, behaves as a strong acid in presence of glycerol in Aqueous Medium.
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Synthesis of Substituted Pyrimidinones Catalyzed by Boric Acid and Glycerol in Aqueous Medium.
ChemInform, 2013Co-Authors: Chhanda Mukhopadhyay, Arup DattaAbstract:The Biginelli-type formation of pyrimidones (IV) catalyzed by a boric acid—glycerol mixture in Aqueous Medium is presented.
Nisar Ahmad Malik - One of the best experts on this subject based on the ideXlab platform.
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Surfactant–Amino Acid and Surfactant–Surfactant Interactions in Aqueous Medium: a Review
Applied Biochemistry and Biotechnology, 2015Co-Authors: Nisar Ahmad MalikAbstract:An overview of surfactant–amino acid interactions mainly in Aqueous Medium has been discussed. Main emphasis has been on the solution thermodynamics and solute–solvent interactions. Almost all available data on the topic has been presented in a lucid and simple way. Conventional surfactants have been discussed as amphiphiles forming micelles and amino acids as additives and their effect on the various physicochemical properties of these conventional surfactants. Surfactant–surfactant interactions in Aqueous Medium, various mixed surfactant models, are also highlighted to assess their interactions in Aqueous Medium. Finally, their applied part has been taken into consideration to interpret their possible uses.
Chhanda Mukhopadhyay - One of the best experts on this subject based on the ideXlab platform.
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Synthesis of Substituted Pyrimidinones Catalyzed by Boric Acid and Glycerol in Aqueous Medium
Synthetic Communications, 2020Co-Authors: Chhanda Mukhopadhyay, Arup DattaAbstract:Abstract An expeditious one-pot synthesis of substituted pyrimidinone derivatives with aromatic aldehydes, cyclopentanone, and urea (or thiourea) was developed with boric acid (10 mol%) and glycerol (0.1 mL) in Aqueous Medium at 45–50 °C. The methodology is simple, highly efficient, and high yielding. The idea behind this methodology is that boric acid, being a weak acid, behaves as a strong acid in presence of glycerol in Aqueous Medium.
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Synthesis of Substituted Pyrimidinones Catalyzed by Boric Acid and Glycerol in Aqueous Medium.
ChemInform, 2013Co-Authors: Chhanda Mukhopadhyay, Arup DattaAbstract:The Biginelli-type formation of pyrimidones (IV) catalyzed by a boric acid—glycerol mixture in Aqueous Medium is presented.
Xu Xiang - One of the best experts on this subject based on the ideXlab platform.
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Surface Modification of Nano-diamond in Aqueous Medium
China Powder Science and Technology, 2020Co-Authors: Xu XiangAbstract:The dispersion and stability of nanodiamond in Aqueous Medium are investigated.The combined effects of mechanical and chemical forces are conducted to modify the surface of nanodiamond particles aim to achieve the dispersion and stability of nanodiamond in water.When different chemical and mechanical processes are applied,excellent dispersion system of both acidic and alkaline Aqueous Medium can be obtained.Surface modification mechanism of nanodiamond is also discussed.
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Influence of Combined Use of Surfactants on Nanodiamond Dispersion Behaviour in Aqueous Medium
Mining and Metallurgical Engineering, 2020Co-Authors: Xu XiangAbstract:The stable dispersion of nanodiamond in Aqueous Medium is investigated. The action mechanism of combined use of surfactants on modification of nanodiamond surface is also analysed using such analysis methods as size measurement, X ray photoelectron energy spectrometry, surface potential measurement and infrared spectrometry. It is found that stable dispersion of nanodiamond in Aqueous Medium can not be achieued by separate use of surfactants, and combined use of ionic and non ionic surfactants can lead to surface chemical modification of nanodiamond, establishing a stable dispersion system.
Narinder Singh - One of the best experts on this subject based on the ideXlab platform.
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A highly fluorescent sensor based on hybrid nanoparticles for selective determination of furosemide in Aqueous Medium
Sensors and Actuators B-chemical, 2016Co-Authors: Anu Saini, Navneet Kaur, Narinder SinghAbstract:Abstract The present work depicts the development of a probe based on the organic-inorganic framework that sensitively and selectively recognized furosemide in Aqueous Medium. An organic receptor 1 is prepared using 1, 8-naphthalic anhydride and diethylenetriamine and the product are further reacted with 1-naphthylisothiocyanate. The receptor is processed into fluorescent organic nanoparticles (FONs); unfortunately, these FONs have not shown any promising sensor activity. The FONs are used as platform for the attachment of gold nanoparticles and the resultant hybrid nanoparticles ( H1 ) are characterized. Hybrid nanoparticles are evaluated for their photophysical studies with fluorescence spectroscopy in Aqueous Medium and the studies revealed that hybrid nanoparticles selectively recognize furosemide in Aqueous Medium. The sensor has shown competitive binding for furosemide and no other tested drug has posed any interference in the detection of furosemide. The titrations are performed with furosemide and the lowest detection limit calculated is 551 nM.
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Sensing in Aqueous Medium: mechanism and its application in the field of molecular recognition
Analytical Methods, 2015Co-Authors: Hemant Sharma, Navneet Kaur, Narinder SinghAbstract:In recent years, the field of molecular recognition has been extensively developed due to the need for efficient methods for the detection of various biologically and environmentally important analytes (metal ions, anions and biomolecules). A number of literature reports advocate the nano-molar detection of analytes. The major concern with most chemosensors is solubility in an Aqueous Medium. This critical review mainly focuses on the detection of analytes (metal ions, anions and biomolecules) in an Aqueous Medium. Various mechanisms, like a cation displacement assay, anion displacement assay, anion ligand exchange, aggregation-caused quenching (ACQ), aggregation-induced emission (AIE), hydrogen bonding mechanism and analyte-induced reaction mechanism are discussed. Based upon the mechanism, the relationship between the structure and properties are derived. Afterwards, a discussion on the current state-of-the-art in metal ions/anions/biomolecules sensing in an Aqueous Medium includes the design of ligand, preorganization in molecules, detection methods and applications. Finally, the future perspectives for detection in an Aqueous Medium in the field of molecular recognition are discussed.
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Fluorometric sensing of Hg2+ ions in Aqueous Medium by nano-aggregates of a tripodal receptor
Organic and Biomolecular Chemistry, 2014Co-Authors: Ajnesh Singh, Narinder Singh, Simanpreet Kaur, Navneet KaurAbstract:Two new tripodal receptors (1–2) have been synthesized and characterized by various spectroscopic techniques. The nano-aggregates of 1 and 2 (N1 and N2) have been prepared by a re-precipitation method in Aqueous Medium and have shown different photo-physical properties. Nano-aggregates of 1 (N1) can selectively recognize Hg2+ in Aqueous Medium in the presence of other metal ions with enhancement in fluorescent intensity. The response was linearly proportional to the concentration of Hg2+ in the range 0–10 μM with a detection limit of 2.4 nM. The mechanism of selective binding of Hg2+ by N1 has also been supported by theoretical studies. To the best of our knowledge, this work represents the first report on substituted thiourea based nano-aggregates for nano-molar detection of mercury in Aqueous Medium.
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Fluorescent organic nanoparticles of Biginelli-based molecules: recognition of Hg2+ and Cl- in an Aqueous Medium.
Inorganic Chemistry, 2013Co-Authors: Ajnesh Singh, Thammarat Aree, Narinder SinghAbstract:Biginelli-based molecules (1–3) have been synthesized and developed as a new class of fluorescent organic nanoparticle-based chemosensors. Chemosensor 2 has shown excellent selectivity and sensitivity for detection of Hg2+ in an Aqueous Medium. It can detect Hg2+ up to 1 nM, and the resultant 2Hg2+ complex can detect Cl– ions (micromolar level) in an Aqueous Medium.
