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Author : Chang-Wei Yeh
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)
Download or read book Study of Fluorescent Colloidal Quantum Dots: Synthesis, Characterization and Stability written by Chang-Wei Yeh and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Samir Kumar
Publisher : BoD – Books on Demand
ISBN 13 : 1839686596
Total Pages : 268 pages
Book Rating : 4.8/5 (396 download)
Download or read book Silver Micro-Nanoparticles written by Samir Kumar and published by BoD – Books on Demand. This book was released on 2021-09-15 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the different methodologies for producing and synthesizing silver nanoparticles (AgNPs) of various shapes and sizes. It also provides an in-depth understanding of the new methods for characterizing and modifying the properties of AgNPs as well as their properties and applications in various fields. This book is a useful resource for a wide range of readers, including scientists, engineers, doctoral and postdoctoral fellows, and scientific professionals working in specialized fields such as medicine, nanotechnology, spectroscopy, analytical chemistry diagnostics, and plasmonics.
Author : Gerasimos Konstantatos
Publisher : Cambridge University Press
ISBN 13 : 0521198267
Total Pages : 329 pages
Book Rating : 4.5/5 (211 download)
Download or read book Colloidal Quantum Dot Optoelectronics and Photovoltaics written by Gerasimos Konstantatos and published by Cambridge University Press. This book was released on 2013-11-07 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Captures the most up-to-date research in the field, written in an accessible style by the world's leading experts.
Author : N. Thejo Kalyani
Publisher : Woodhead Publishing
ISBN 13 : 0323852793
Total Pages : 612 pages
Book Rating : 4.3/5 (238 download)
Download or read book Quantum Dots written by N. Thejo Kalyani and published by Woodhead Publishing. This book was released on 2023-01-18 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum dots: Emerging materials for versatile applications is an introduction to the fundamentals and important advances of research of this important category of semiconductor nanostructured materials. After a brief review of relevant nanotechnology concepts and the unique properties of nanomaterials, the book describes the fundamentals of quantum dots with definitions of the primary classifications of quantum dots. There is an emphasis on practical considerations of the commercial translation of quantum dots such as their toxicity, stability, and disposal. Moreover, the book focuses on a review of the advances in research in emerging quantum dot materials along with the latest innovations in materials design and fabrication methods. Quantum Dots is suitable for materials scientists and engineers in academia or industry R&D who are looking for an introduction to this research topic or a key reference on the latest advances and applications. - Introduces the primary classifications, properties, synthesis, characterization and fabrication strategies of quantum dots - Reviews the latest applications of quantum dots for LEDs, displays, energy storage devices, photovoltaic cells, medicine, and more - Discusses the practical barriers to commercial translation of quantum dots, including toxicity, stability, and their safe disposal
Author : Inamuddin
Publisher : Materials Research Forum LLC
ISBN 13 : 1644901250
Total Pages : 360 pages
Book Rating : 4.6/5 (449 download)
Download or read book Quantum Dots written by Inamuddin and published by Materials Research Forum LLC. This book was released on 2021-04-05 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a thorough survey of current research in quantum dots synthesis, properties, and applications. The unique properties of these new nanomaterials offer multifunctional applications in such fields as photovoltaics, light-emitting diodes, field-effect transistors, lasers, photodetectors, solar cells, biomedical diagnostics and quantum computing. Keywords: Quantum Dots (QD), Photovoltaics, Light-emitting Diodes, Field-effect Transistors, Lasers, Photodetectors, Solar Cells, Biomedical Diagnostics, Quantum Computing, QD Synthesis, Carbon QDs, Graphene QDs, QD Sensors, Supercapacitors, Magnetic Quantum Dots, Cellular/Molecular Separation, Chromatographic Separation Column, Photostability, Luminescence of Carbon QDs, QD Materials for Water Treatment, Semiconductor Quantum Dots, QD Drug Delivery, Antibacterial Quantum Dots.
Author : Ingrid Joylyn Paredes
Publisher : American Chemical Society
ISBN 13 : 0841299919
Total Pages : 120 pages
Book Rating : 4.8/5 (412 download)
Download or read book Synthesis and Structure of Colloidal Quantum Dots written by Ingrid Joylyn Paredes and published by American Chemical Society. This book was released on 2023-06-15 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology is an interdisciplinary field comprising materials scientists, chemists, physicists, and engineers dedicated to understanding the chemistry behind the associated synthesis, purification, modification, and applications. Already, nanotechnology has been instrumental to advances in medicine, electronics, catalysis, and cosmetics. The work of nanotechnologists has enabled society to move from the current “Silicon Age” into a new “Nano Age.” These alternatives to Si-based technologies are expected to combine the optoelectronic properties of bulk inorganic semiconductors with the benefits of additive device manufacturing—low cost, large area, and solution-based processes. This primer focuses on a class of nanomaterials known as colloidal quantum dots. Known for their solution processability and size-dependent optoelectronic properties, the study of colloidal quantum dots has garnered significant attention from the research community. The goal of this primer is to equip newcomers with the introductory knowledge and tools necessary to enter the field. As such, the scope of our work focuses on the synthesis and characterization of quantum dots; where possible, we point the reader to further reading specific to applications.
Author : Oluwatobi Samuel Oluwafemi
Publisher : Woodhead Publishing
ISBN 13 : 0128183047
Total Pages : 282 pages
Book Rating : 4.1/5 (281 download)
Download or read book Ternary Quantum Dots written by Oluwatobi Samuel Oluwafemi and published by Woodhead Publishing. This book was released on 2021-07-02 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ternary Quantum Dots: Synthesis, Properties, and Applications reviews the latest advances in ternary (I-III-VI) chalcopyrite quantum dots (QDs), along with their synthesis, properties and applications. Sections address the fundamental key concepts of ternary quantum dots, progress in synthesis strategies (i.e., organic and aqueous synthesis), and characterization methods (i.e., transmission electron microscopy, dynamic light scattering, etc.). Properties of ternary quantum dots are comprehensively reviewed, including optical, chemical and physical properties. The factors and mechanisms of the cytotoxicity of ternary quantum dot-based nanomaterials are also described. Since ternary chalcopyrite quantum dots are less toxic and more environmentally benign than conventional binary II-VI chalcogenide quantum dots, they are being investigated to replace conventional quantum dots in a range of applications. Thus, this book reviews QDs in various applications, such as solar cells, photocatalytic, sensors and bio-applications. - Reviews fundamental concepts of ternary quantum dots and quantum dot-nanocomposites including the most relevant synthesis strategies, key properties, and characterization techniques - Delves into the cytotoxicity of quantum dots looking at the factors and mechanisms that influence cytotoxicity including demonstration of cytotoxicity assays for in vitro and in vivo tests - Touches on the many applications of ternary quantum dots including biomedical applications, applications in solar cells, sensing applications, and photocatalytic applications
Download or read book Single-Molecule Characterization of Photophysical and Colloidal Properties of Biocompatible Quantum Dots written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloidal semiconductor nanocrystals (NCs) have recently been introduced as novel fluorescent labels for various biological applications. Their unique optical properties -- tunable narrow emission spectrum, broad excitation spectrum, high photostability and long fluorescent lifetimes (on the order of tens of nanoseconds) -- make them attractive probes in experiments involving long observation times, multicolor and time-gated detection. Photophysical properties were investigated at the ensemble and single-molecule level for CdSe or CdTe core, CdSe/ZnS core-shell and surface-modified NCs. The use of NCs as fluorescent probes in biological applications requires various synthesis routes and surface modifications to enable solubility in aqueous solution and to allow labeling of biological macromolecules. Due to NC2s sensitivity to surface-defects chemical treatments have a significant influence on photophysical properties and need to be thoroughly monitored. Single-molecule fluorescence detection was used to characterize NC fluorescence, observe intermittency in the emission (blinking), and unravel a non-fluorescent subpopulation of NCs whose fluorescence can be restored through photo-induced activation. Stage-scanning confocal, epifluorescence and objective-type total-internal-reflection microscopy, were applied to observe surface-immobilized NCs. Fluorescence lifetimes were determined to be around 20 ns for single particles showing deviations from a mono-exponential decay. This observation was proven to be characteristic of single particles by monitoring photon antibunching. Fluorescence correlation spectroscopy (FCS) was used to characterize photophysical and colloidal properties in solution. It was shown to be a powerful technique to rapidly evaluate information on synthesis and surface modifications. These are essential to achieve water-solubility and bio-conjugation and dramatically influence the optical performance. FCS allows measuring concentration of fluorescent.
Download or read book Van Der Waals Quantum Dots written by and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Boron nitride quantum dots (BNQDs) have gained increasing attention for their versatile fluorescent, optoelectronic, chemical, and biochemical properties. During the past few years, significant progress has been demonstrated, started from theoretical modeling to actual application. Many interesting properties and applications have been reported, such as excitation-dependent emission (and in some cases, non-excitation dependent), chemical functionalization, bioimaging, phototherapy, photocatalysis, chemical, and biological sensing. An overview of these early-stage research development of BNQDs will be discussed in this dissertation. Next, the origin of excitation-dependent fluorescence from BNQDs synthesized in an organic solvent is explored and explained with the support of theoretical modeling. Also, we have developed a series of calibration plots by using UV-Vis and fluorescent spectroscopy for the quantification of BNQDs. We demonstrated that these calibration plots are more than 90% accurate for estimating the concentration of BNQDs in solutions. Finally, the use of van der Waals QDs including BNQDs and MoS2 in thin films solar cells is explored. Our ZnO-based solar cell devices allow us to obtain a record high efficiency of 14.7% using commercial CdSe/ZnS QDs. Preliminary photovoltaic data based on van der Waals QDs will be discussed.
Author : Rakshit Ameta
Publisher : Elsevier
ISBN 13 : 0323858953
Total Pages : 393 pages
Book Rating : 4.3/5 (238 download)
Download or read book Quantum Dots written by Rakshit Ameta and published by Elsevier. This book was released on 2022-09-20 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Dots: Fundamentals, Synthesis and Applications compiles key information, along with practical guidance on quantum dot synthesis and applications. Beginning with an introduction, Part One highlights such foundational knowledge as growth mechanisms, shape and composition, electrochemical properties, and production scale-up for quantum dots. Part Two goes on to provide practical guides to key chemical, physical and biological methods for the synthesis of quantum dots, with Part Three reviewing the application of quantum dots and a range of important use cases, including photocatalysis, energy cells and medical imaging. Drawing on the knowledge of its expert authors, this comprehensive book provides practical guidance for all those who already study, develop or use quantum dots in their work. - Presents the foundational information needed to effectively understand and manipulate quantum dot properties - Consolidates key methods of quantum dot synthesis in a single volume - Reviews both current and future practical applications of quantum dots across a range of important fields
Author : Gülçin Ünal
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (759 download)
Download or read book Synthesis, Characterization of CdSxSe1-x Quantum Dots and Evaluation of Their Real-time Motions in Live Cells written by Gülçin Ünal and published by . This book was released on 2011 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of quantum dots as fluorescent labels in bioimaging is the most intensively studied subject. The aim of this study is to elucidate locations of quantum dots and track their motions in real time through confocal microscopy and to evaluate influence of surface chemistry on diffusions of quantum dots in live cells. In this study, trioctylphosphine oxide (TOPO) capped CdSxSe1-x quantum dots were synthesized and then TOPO molecules were exchanged with 3-mercaptopropionic acid and N-acetyl-Lcysteine to make quantum dots water dispersible for cellular imaging. Human lung adenocarcinoma epithelial cells (A549) and human bronchial epithelial cells (BEAS-2B) were incubated 1 hour with CdSxSe1-x quantum dots with a concentration range of 1-10 g/mL. Localizations and real time motions of quantum dots were tracked by a spinning disc confocal microscope. The center of fluorescent spots of quantum dots was determined by 2D Gaussian fitting with a sub-pixel resolution (
Author : Yarub Al-Douri
Publisher :
ISBN 13 : 9780750357029
Total Pages : 0 pages
Book Rating : 4.3/5 (57 download)
Download or read book Quantum Dots written by Yarub Al-Douri and published by . This book was released on 2024-09-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Denis Forster
Publisher :
ISBN 13 :
Total Pages : 354 pages
Book Rating : 4.F/5 ( download)
Download or read book Homogeneous Catalysis--II. written by Denis Forster and published by . This book was released on 1974 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Elsevier
ISBN 13 : 0444635025
Total Pages : 394 pages
Book Rating : 4.4/5 (446 download)
Download or read book Protected Metal Clusters: From Fundamentals to Applications written by and published by Elsevier. This book was released on 2015-09-06 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protected Metal Clusters: From Fundamentals to Applications surveys the fundamental concepts and potential applications of atomically precise metal clusters protected by organic ligands. As this class of materials is now emerging as a result of breakthroughs in synthesis and characterization that have taken place over the last few years, the book provides the first reference with a focus on these exciting novel nanomaterials, explaining their formation, and how, and why, they play an important role in the future of molecular electronics, catalysis, sensing, biological imaging, and medical diagnosis and therapy. - Surveys the fundamental concepts and potential applications of atomically precise metal clusters protected by organic ligands. - Provides well-organized, tutorial style chapters that are ideal for teaching and self-study - In-depth descriptions by top scientists in the field - Presents the state-of-the art of protected metal clusters and their future prospects
Author : Eram Sharmin
Publisher : BoD – Books on Demand
ISBN 13 : 9535136275
Total Pages : 242 pages
Book Rating : 4.5/5 (351 download)
Download or read book Spectroscopic Analyses written by Eram Sharmin and published by BoD – Books on Demand. This book was released on 2017-12-06 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents developments and applications of these methods, such as NMR, mass, and others, including their applications in pharmaceutical and biomedical analyses. The book is divided into two sections. The first section covers spectroscopic methods, their applications, and their significance as characterization tools; the second section is dedicated to the applications of spectrophotometric methods in pharmaceutical and biomedical analyses. This book would be useful for students, scholars, and scientists engaged in synthesis, analyses, and applications of materials/polymers.
Author : Andrew Kevin Tobias
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (841 download)
Download or read book Quantum DOT Synthesis Characterization and Analysis written by Andrew Kevin Tobias and published by . This book was released on 2012 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum dot applications are numerous and range from photovoltaic devices and lasers, to bio labeling. Group II-VI semiconductor nanocrystals, specifically CdSe quantum dots, have been shown to be useful in applications such as, imaging, biological labeling, LEDs, lasers and solar cells. To further our understanding of these systems, we have synthesized a wide range of quantum dot samples, and characterized them using spectroscopic techniques. Difficulties in sample reproducibility and variance in the electronic band structure of quantum dots from sample to sample create the necessity for analysis techniques that can accurately and reproducibly provide band energies. Cyclic voltammetry (CV) has been used to estimate HOMO/LUMO levels in molecular species and, similarly, can also be used to estimate valence and conduction band levels in quantum dots. CV has the potential to become a useful tool in engineering new nanocrystal technology, by providing information necessary for predicting and modeling interfacial charge transfer to and from quantum dots. Despite the potential use of CV analysis, limitations arise due to the physical nature of nanocrystals. Solubility and diffusion come into play in solution-state experiments, while sample degradation is an issue in thin films. Carbon paste electrodes have been used in electrochemical studies to eliminate these issues. I will present data obtained using a carbon paste electrode to investigate energy levels in core CdSe and ligands bound to their surface. Importantly, the results of this work allow us to determine HOMO-LUMO energy differences for candidate nanocrystal-molecule electron transfer systems.
Author : Orion Ciftja
Publisher :
ISBN 13 : 9781619429680
Total Pages : 0 pages
Book Rating : 4.4/5 (296 download)
Download or read book Quantum Dots written by Orion Ciftja and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoscience and nanotechnology is continuously moving forward enabling the precise, controlled fabrication of structures and devices at atomic and molecular scales. Quantum dots are typically semiconductor nanocrystals that have gained tremendous attention due to their unique electronic, magnetic, chemical and optical properties. They have proven very useful in applications in many fields across the physical, engineering, chemical, biological and medical sciences. In this book, the authors give an overview of the progress and major research developments in the field of quantum dots over the past two decades. They specifically focus on discussing the cutting-edge applications in the fields of information technology, electronics, biotechnology, energy, medicine, cellular imaging and diagnostic bio-sensing.
