Download or read book Water soluble Luminescent Quantum Dots and Biomolecular Conjugates Thereof and Related Compositions and Methods of Use written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present invention provides a water-soluble luminescent quantum dot, a biomolecular conjugate thereof and a composition comprising such a quantum dot or conjugate. Additionally, the present invention provides a method of obtaining a luminescent quantum dot, a method of making a biomolecular conjugate thereof, and methods of using a biomolecular conjugate for ultrasensitive nonisotopic detection in vitro and in vivo.
Download or read book Water soluble Luminescent Quantum Dots and Biomolecular Conjugates Thereof and Related Compositions and Method of Use written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present invention provides a water-soluble luminescent quantum dot, a biomolecular conjugate thereof and a composition comprising such a quantum dot or conjugate. Additionally, the present invention provides a method of obtaining a luminescent quantum dot, a method of making a biomolecular conjugate thereof, and methods of using a biomolecular conjugate for ultrasensitive nonisotopic detection in vitro and in vivo.
Download or read book Australian Official Journal of Patents written by and published by . This book was released on 2000 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantum Dots written by Charles Z. Hotz and published by Springer Science & Business Media. This book was released on 2008-02-02 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Dots captures many diverse applications enabling utility in biological detection. Organized into five parts, the first two parts cover the use of QDs in imaging fixed and living cells (and tissues). Protocols are included for using QDs in routine as well as enabling applications. Part 3 shows early efforts aimed at using QDs in live animals. The final two parts demonstrate the versatility of QD technology in existing assay technology.
Download or read book Quantum Dots written by Faten Divsar and published by BoD – Books on Demand. This book was released on 2020-06-24 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum dots (QDs) are luminescent semiconductor nanocrystals with unique chemical and physical properties due to their size and highly compact structure. QDs were first proposed for use in luminescent concentrators to replace organic dye molecules. In this book, the interest is in taking advantage of the emission properties of QDS, which can be tuned by their size, resulting from quantum confinement. In addition, the book discusses the potential of QDs as contrast and therapeutic agents in the field of medicine.
Download or read book IN VITRO IMAGING USING STABLE WATER DISPERSIBLE LUMINESCENT SI QUANTUM DOTS CAPPED WITH VARIOUS CELLULAR TARGETING AGENTS written by Chen-An Tien and published by . This book was released on 2010 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents research on the synthesis, functionalization, and biological applications of silicon nanocrystals, also called silicon quantum dots (Si QDs). Over the past 20 years, semiconductor nanocrystals (also known as quantum dots or QDs) have been investigated for applications ranging from electronic materials science to biological imaging. The outstanding optical properties of QDs, which include stable luminescence, tunable luminescence color, modifiable surface characteristics, and the potential to interface with biologically relevant molecules, have made QDs a good replacement for organic dyes in many applications. Silicon nanocrystals show many of the same useful optical properties but lower toxicity than cadmium based quantum dots for biological applications.^In this thesis, I focus on the biological applications of silicon nanocrystals in fluorescent biosensing and cellular labeling applications. Conventional quantum dots have great potential in cancer-related imaging and diagnostic applications; however, these applications are limited by concerns about the inherent toxicity of their core materials (e.g. cadmium, lead). Virtually all imaging applications require conjugation of the imaging agent to a biologically active molecule to achieve selective uptake or binding. Here, we report a study of biocompatible silicon quantum dots covalently attached to biomolecules including lysine, folate, anti-mesothelin, and transferrin. The particles possess desirable physical properties, surface chemistry, and optical properties. Folate- and anti-mesothelin-conjugated silicon quantum dots show selective uptake into Panc-1 cells.^This study contributes to the preclinical evaluation of silicon quantum dots and further demonstrates their potential as an imaging agent for cancer applications. Major bionanotechnology research issues in quantum dot synthesis include the stabilization of their optical properties using various coating and encapsulation strategies, and advancing the rational design of constructs containing them to optimize overall size, surface chemistry, and composition in order to minimize potential toxicity and overcome biological barriers. Conventional cadmium- and lead-based quantum dots are normally coated, because their degradation may result in the release of toxic heavy metal ions. For in vivo use, they must be cleared from the body without degradation. Freestanding silicon quantum dots are expected to biodegrade to non-toxic products (e.g. silicic acid); however they have not been evaluated in biodegradable nanocarriers.^Previous work from our group has encapsulated them with non-toxic, but non-biodegradable phospholipid-polyethylene glycol surfactants. Here, we report the development of chitosan-coated silicon nanoparticles (CSi QDs). Evaluation of the physicochemical and optical properties of the CSi QDs shows that they remain optically active in aqueous media. The chitosan coating renders silicon quantum dots stable in aqueous biological media and useful for biological applications such as cellular imaging with single and two photon excitation. The particles are also degradable when incubated at physiological temperature. These results open the door for a new generation of silicon quantum dots that may have a wide variety of applications derived from the flexibility of chitosan.
Download or read book Quantum Dots written by Lucjan Jacak and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an overview of the theoretical background and experimental re sults in the rapidly developing field of semiconductor quantum dots - systems 8 6 of dimensions as small as 10- -10- m (quasi-zero-dimensional) that contain a small and controllable number (1-1000) of electrons. The electronic structure of quantum dots, including the energy quan tization of the single-particle states (due to spatial confinement) and the evolution of these (Fock-Darwin) states in an increasing external magnetic field, is described. The properties of many-electron systems confined in a dot are also studied. This includes the separation of the center-of-mass mo tion for the parabolic confining potential (and hence the insensitivity of the transitions under far infrared radiation to the Coulomb interactions and the number of particles - the generalized Kohn theorem) and the effects due to Coulomb interactions (formation of the incompressible magic states at high magnetic fields and their relation to composite jermions), and finally the spin-orbit interactions. In addition, the excitonic properties of quantum dots are discussed, including the energy levels and the spectral function of a single exciton, the relaxation of confined carriers, the metastable states and their effect on the photoluminescence spectrum, the interaction of an exciton with carriers, and exciton condensation. The theoretical part of this work, which is based largely on original re sults obtained by the authors, has been supplemented with descriptions of various methods of creating quantum-dot structures.
Download or read book Luminescent Quantum Dots written by Tara L. Prendergast and published by . This book was released on 2002 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Water Soluble CdSe Quantum Dots for Bioimaging Field written by Deepak Kumar Gupta and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new class of fluorescent labels has been produced by conjugating water soluble quantum dots (QDs) with biomolecules. Quantum Dots (QDs) are semiconductor nanocrystals (1 10 nm) exhibiting distinctive photoluminescence (PL) properties due to the quantum confinement effect. The resultant nanoprobes can potentially overcome many of the functional limitations encountered with organic dyes. High-quality quantum dots are highly stable against photobleaching and have narrow, symmetric emission spectra. In particular, the emission wavelength of quantum dots can be continuously tuned by simply changing the particle size, and a single light source can be used for simultaneously excitation of all different-colored dots. These novel optical properties can render quantum dots ideal fluorophores for sensitive, Multicolor and multiplexing applications in molecular biology and bioengineering.
Download or read book Luminescent Water soluble Quantum Dots written by Manuela Aseye Ayele Ayee and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Quantum Dots for Bioimaging written by Amin Reza Rajabzadeh and published by CRC Press. This book was released on 2023-06-05 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioimaging is a sophisticated, non-invasive, and non-destructive technique for the direct visualization of biological processes. Highly luminescent quantum dots combined with magnetic nanoparticles or ions form an exciting class of new materials for bioimaging. These materials can be prepared in cost-effective ways and show unique optical behaviors. Magnetic Quantum Dots for Bioimaging explores leading research in the fabrication, characterization, properties, and application of magnetic quantum dots in bioimaging. Covers synthesis, properties, and bioimaging techniques Discusses modern manufacturing technologies and purification of magnetic quantum dots Explores thoroughly the properties and extent of magnetization to various imaging techniques Describes the biocompatibility, suitability, and toxic effects of magnetic quantum dots Reviews recent innovations, applications, opportunities, and future directions in magnetic quantum dots and their surface-decorated nanomaterials This comprehensive reference offers a road map of the use of these innovative materials for researchers, academics, technologists, and advanced students working in materials engineering and sensor technology.
Download or read book Semiconductor Quantum Dots written by Y. Masumoto and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor quantum dots represent one of the fields of solid state physics that have experienced the greatest progress in the last decade. Recent years have witnessed the discovery of many striking new aspects of the optical response and electronic transport phenomena. This book surveys this progress in the physics, optical spectroscopy and application-oriented research of semiconductor quantum dots. It focuses especially on excitons, multi-excitons, their dynamical relaxation behaviour and their interactions with the surroundings of a semiconductor quantum dot. Recent developments in fabrication techniques are reviewed and potential applications discussed. This book will serve not only as an introductory textbook for graduate students but also as a concise guide for active researchers.
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
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.
Download or read book Cadmium Telluride Quantum Dots written by John Donegan and published by CRC Press. This book was released on 2013-12-03 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last two decades, semiconductor quantum dots—small colloidal nanoparticles—have garnered a great deal of scientific interest because of their unique properties. Among nanomaterials, CdTe holds special technological importance as the only known II–VI material that can form conventional p–n junctions. This makes CdTe very important for the development of novel optoelectronic devices such as light-emitting diodes, solar cells, and lasers. Moreover, the demand for water-compatible light emitters and the most common biological buffers give CdTe quantum dots fields a veritable edge in biolabeling and bioimaging. Cadmium Telluride Quantum Dots: Advances and Applications focuses on CdTe quantum dots and addresses their synthesis, assembly, optical properties, and applications in biology and medicine. It makes for a very informative reading for anyone involved in nanotechnology and will also benefit those scientists who are looking for a comprehensive account on the current state of quantum dot–related research.
Download or read book Quantum Dot Optoelectronic Devices written by Peng Yu and published by Springer Nature. This book was released on 2020-04-16 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book captures cutting-edge research in semiconductor quantum dot devices, discussing preparation methods and properties, and providing a comprehensive overview of their optoelectronic applications. Quantum dots (QDs), with particle sizes in the nanometer range, have unique electronic and optical properties. They have the potential to open an avenue for next-generation optoelectronic methods and devices, such as lasers, biomarker assays, field effect transistors, LEDs, photodetectors, and solar concentrators. By bringing together leaders in the various application areas, this book is both a comprehensive introduction to different kinds of QDs with unique physical properties as well as their preparation routes, and a platform for knowledge sharing and dissemination of the latest advances in a novel area of nanotechnology.
Download or read book Quantum Dots written by Jagannathan Thirumalai and published by BoD – Books on Demand. This book was released on 2023 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed overview of recent advances in the captivating world of quantum dots and outlines some possible imminent new directions for this important field. A variety of advanced techniques is rapidly developing in the application of quantum dots to solar photovoltaics, LEDs, quantum computing (qubits) and different biological spheres. The book presents, discusses and compares devices based on state-of-the-art structures, incipient material and new physical effects. Improved efficiency and reliability in these fields are already pointing the way to next-generation devices, especially in the nano regime. This book is addressed to students and scientists working in the field of quantum dots and progressive technologies.
