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EBookClubs

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Book A Fluorescent Photoinduced Electron Transfer PET Sensor for Cations with a Separate PET Channel to Suppress Proton Signals

Download or read book A Fluorescent Photoinduced Electron Transfer PET Sensor for Cations with a Separate PET Channel to Suppress Proton Signals written by Sunpun Pathirana and published by . This book was released on 2008 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fluorescent Photoinduced Electron Transfer PET Proton Sensors

Download or read book Fluorescent Photoinduced Electron Transfer PET Proton Sensors written by Risper Nyabeta and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Design and Synthesis of Fluorescent Sensors for Zinc Based on Photoinduced Electron Transfer PET

Download or read book Design and Synthesis of Fluorescent Sensors for Zinc Based on Photoinduced Electron Transfer PET written by Surendra K. Puli and published by . This book was released on 2006 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemistry has become an important tool in solving problems in biology and medicine. Chemists are engaged in developing new devices at the nanoscale level to aid in clinical diagnosis, real time monitoring of analytes, and analyzing neural activity, etc. Our research is aimed at designing and synthesizing fluorescent sensors to detect various divalent metal ions under physiological conditions. We designed and synthesized a chemosensor based on the principle of photoinduced electron transfer as a signal transduction mechanism in order to detect the presence of various divalent metal cations, particularly zinc. We report the synthesis, characterization and its spectrophotometric titrations with various metal ions. This sensor signals the presence of metal ions by a fluorescence signal and offers a significant advantage as it exhibits "off-on" behavior in the presence and absence of metal ions. The primary sensor was found to be very sensitive and selective toward zinc ions. We also aimed at optimizing the performance of this chemosensor by taking advantage of electron donating/withdrawing abilities of different functional groups by using computational methods. We devised a new scheme to synthesize it, unfortunately the modified sensor was not realized for unknown reason. We are currently involved in devising an alternate strategy to synthesize and develop new sensors for neutral molecules.

Book Fluorescent Chemosensors for Ion and Molecule Recognition

Download or read book Fluorescent Chemosensors for Ion and Molecule Recognition written by Anthony W. Czarnik and published by . This book was released on 1993 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: From an August 1992 symposium in Washington, D.C., 13 papers report on research into developing fluorescent chemosensors for devices to monitor several critical parameters of blood composition in real time. They aim at opening communication between the clinicians and researchers who want such devices and the scientists and engineers who could develop them. Among the topics are the synthesis and study of crown ethers with alkali- metal-enhanced fluorescence, the tunable florescence of some macrocyclic anthracenophanes, and fluorescent probes in studies of proteases. Annotation copyright by Book News, Inc., Portland, OR

Book Intramolecular Charge Transfer

Download or read book Intramolecular Charge Transfer written by Ramprasad Misra and published by John Wiley & Sons. This book was released on 2018-02-27 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between the multitude of advanced research articles and the knowledge newcomers to the field are looking for, this is a timely and comprehensive monograph covering the interdisciplinary topic of intramolecular charge transfer (ICT). The book not only covers the fundamentals and physico-chemical background of the ICT process, but also places a special emphasis on the latest experimental and theoretical studies that have been undertaken to understand this process and discusses key technological applications. After outlining the discovery of ICT molecules, the authors go on to discuss several important substance classes. They present the latest techniques for studying the underlying processes and show the interplay between charge transfer and the surrounding medium. Examples taken from nonlinear optics, viscosity and polarity sensors, and organic electronics testify to the vast range of applications. The result is a unique information source for experimentalists as well as theoreticians, from postgraduate students to researchers.

Book Rational Design Synthesis and Characterization of Response Selective Fluorescent Sensors

Download or read book Rational Design Synthesis and Characterization of Response Selective Fluorescent Sensors written by Ruisong Xu and published by . This book was released on 2007 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, we established a new approach assisted by computational chemistry to design fluorescent sensors. The approach is applicable to predict the behavior of a fluorophore-bridge-receptor sensor based on photoinduced electron transfer (PET). Our first designed rhodamine based pH sensor exhibits strong fluorescence under acidic conditions and very weak fluorescence under basic conditions, just as the computations predicted.

Book Design and Synthesis of Photo induced Electron Transfer Based Fluorescent Probes for Pyruvate and Zinc Detection

Download or read book Design and Synthesis of Photo induced Electron Transfer Based Fluorescent Probes for Pyruvate and Zinc Detection written by Charles D. Cook and published by . This book was released on 2007 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and synthesis of fluorescent chemosensor probes based on photoinduced electron transfer is discussed. First, the design of a series of probes to detect the presence of divalent metal cations is discussed. Next, the results for an existing probe for divalent cations are examined. Computational chemistry is used to provide a possible answer to its selectivity. This method of examination suggests that the probes selectivity is due to the bonding involved in analyte coordination. Then, the design of a series of probes to detect the presence of mono-, di-, and, trivalent hydrocarbon anions is discussed. From this discussion, the synthesis of a single probe from that series as well as characterization and the spectrophotometric results from its titration with pyruvate, malate, and citrate is discussed, respectively. The probe was found to be more selective and sensitive toward pyruvate. Work is currently underway to design and synthesize other series of probes to detect this family of anion.

Book Proceedings of the First International Workshop on Optical Power Limiting

Download or read book Proceedings of the First International Workshop on Optical Power Limiting written by Francois Kajzar and published by CRC Press. This book was released on 1999 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Multisensor Systems for Analysis of Liquids and Gases Trends and Developments

Download or read book Multisensor Systems for Analysis of Liquids and Gases Trends and Developments written by Larisa Lvova and published by Frontiers Media SA. This book was released on 2019-01-22 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays the application of multisensor systems for the analysis of liquids and gases is becoming more and more popular in analytical chemistry. Such systems, also known as “electronic tongues” and “electronic noses” are based on various types of chemical sensors and biosensors with different transduction principles combined with multivariate data processing protocols. These instruments received significant interest due to their simplicity, low costs and the possibility to obtain reliable chemical information from complex unresolved analytical signals. A distinct feature of electronic tongues and noses is that they can be calibrated for prediction of complex integral features in samples, like e.g. taste, odor, toxicity, geographical origin, general conformity with certain standards, etc. – the tasks that otherwise would require involvement of complex analytical instrumentation, human or animal sensory panels. In the present eBook the original research and review articles in the area of multisensor approach are collected. They dedicated to the novel sensor materials development, measuring techniques evaluation, electronics, data processing protocols and practical applications. An editorial foreword article is followed by the researches authored by leading scientists in the field of chemical sensors and artificial sensing systems. With this eBook we hope to inspire further interest and new research efforts in this exciting area.

Book Introduction to Fluorescence Sensing

Download or read book Introduction to Fluorescence Sensing written by Alexander P. Demchenko and published by Springer Nature. This book was released on 2020-12-01 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides systematic knowledge of basic principles in the design of fluorescence sensing and imaging techniques together with critical analysis of recent developments. Fluorescence is the most popular technique in chemical and biological sensing because of its ultimate sensitivity, high temporal and spatial resolution and versatility that enables imaging within the living cells. It develops rapidly in the directions of constructing new molecular recognition units, new fluorescence reporters and in improving sensitivity of response up to detection of single molecules. Its application areas range from control of industrial processes to environment monitoring and clinical diagnostics. Being a guide for students and young researchers, it also addresses professionals involved in active basic and applied research. Making a strong link between education, research and product development, this book discusses prospects for future progress.

Book Chemosensors of Ion and Molecule Recognition

Download or read book Chemosensors of Ion and Molecule Recognition written by J.P. Desvergne and published by Springer Science & Business Media. This book was released on 1997-04-30 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design and use of chemosensors for ion and molecule recognition - a branch of supramolecular chemistry - have developed at an extraordinary rate. This imaginative and creative area involves work at the interface of organic and inorganic chemistry, physical chemistry, biology, medicine and environmental science and is providing new sensors based on the specific signal delivered by the analyte-probe reaction. The emergence of efficient fluorescent receptors has allowed the detection, identification, and even titration of, for example, heavy metal or radionuclide pollutants. Further, with sensors displaying specific and strong complexation properties, such materials could be detected and removed at very low concentrations. Further, among other species of biological interest, sugars, oxygen and carbon dioxide can actually be probed with optodes and similar devices. This is clearly just the beginning of a very promising line of research. Audience: Organic chemists interested in creating new chemosensors, as well as the many potential end users of such sensors.