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Author : Asma Razzak Jaffar
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (11 download)
Download or read book A Study of Size Effect on DNA Mediated Assembly of Gold Nanoparticles written by Asma Razzak Jaffar and published by . This book was released on 2010 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Je Hwan Lee
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (798 download)
Download or read book A SERS Study of DNA Mediated Assembly of Gold Nanoparticles written by Je Hwan Lee and published by . This book was released on 2012 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kyrylo Zagorovsky
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (133 download)
Download or read book DNA-mediated Gold Nanoparticle Assembly written by Kyrylo Zagorovsky and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Unique physicochemical properties of nanomaterials offer novel methodologies for disease treatment and diagnosis. Dynamic nanoparticle assemblies are adding an additional level of functionality and flexibility by combining multiple nanoparticle types into structures with stimuli-responsive size and surface chemistry. DNA-mediated gold nanoparticles assemblies are offering the most functional and versatile platform, which combines DNA addressability with large surface area, monodispersity, and easy functionalization of gold nanoparticles. Assembly size determines their application, with smaller nanoassemblies particularly suitable for drug delivery, and larger microassemblies used for biosensing. Despite a number of published studies, no in vivo examples or clinically ready biosensors have been reported. Therefore, the goal of this thesis was to identify the barriers for translation in both fields and to develop methods to overcome these limitations. To this end core-satellite nanoassemblies were designed for in vivo delivery, which efficiently protected loaded cargo and minimized macrophage recognition. Their controllable serum stability could be used as the mechanism of cargo release. In vivo nanoassemblies showed longer circulation half-life, improved tumour targeting, and renal bioelimination. In parallel, larger microassembly structures were combined with DNA enzyme signal amplification to generate a novel infectious pathogen biosensor. The assay was particularly suited for point-of-care setting with cheap and stable components and simple, fast, and specific colourimetric readout that could assay multiple targets in parallel. To demonstrate its clinical readiness, the assay was adapted for detection of a panel of five urinary tract infection bacteria. All targets were successfully identified in parallel at clinically relevant concentrations. Preliminary tests with E. coli patient samples confirmed clinical detection with good sensitivity and excellent specificity. This work presents a novel DNA-mediated gold nanoparticle assembly platform that is ready for in vivo translation and clinical in vitro diagnostics.
Author : Timur Kotlyar
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (11 download)
Download or read book DNA-mediated Assembly of Gold Nanoparticles and Restriction Enzyme Induced Disassembly written by Timur Kotlyar and published by . This book was released on 2011 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mehmet Sengun Ozsoz
Publisher : CRC Press
ISBN 13 : 9814241776
Total Pages : 568 pages
Book Rating : 4.8/5 (142 download)
Download or read book Electrochemical DNA Biosensors written by Mehmet Sengun Ozsoz and published by CRC Press. This book was released on 2012-04-23 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the basic electrochemical applications of DNA in various areas, from basic principles to the most recent discoveries. The book comprises theoretical and experimental analysis of various properties of nucleic acids, research methods, and some promising applications. The topics discussed in the book include electrochemical detection of DNA hybridization based on latex/gold nanoparticle and nanotubes; nanomaterial-based electrochemical DNA detection; electrochemical detection of microorganism-based DNA biosensors; gold nanoparticle-based electrochemical DNA biosensors; electrochemical detection of the aptamer-target interaction; nanoparticle-induced catalysis for DNA biosensing; basic terms regarding electrochemical DNA (nucleic acids) biosensors; screen-printed electrodes for electrochemical DNA detection; application of field-effect transistors to label free electrical DNA biosensor arrays; and electrochemical detection of nucleic acids using branched DNA amplifiers.
Author : Mohammed Muzibur Rahman
Publisher : BoD – Books on Demand
ISBN 13 : 1789849985
Total Pages : 172 pages
Book Rating : 4.7/5 (898 download)
Download or read book Gold Nanoparticles written by Mohammed Muzibur Rahman and published by BoD – Books on Demand. This book was released on 2019-02-13 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold Nanoparticles - Reaching New Heights contains recent research on the preparation, characterization, fabrication, and potential of optical and biological applications of gold nanoparticles (AuNPs). It is promising novel research that has received a lot of interest over the last few decades. It covers advanced topics on optical, physical, medicinal, and biological applications of AuNPs. Development of green nanotechnology is generating the interest of researchers towards the synthesis of eco-friendly, safe, non-toxic applications, which can be used for manufacture at a large scale. These are simple, cost-effective, stable, enduring, and reproducible aqueous room temperature synthesis applications to obtain the self-assembly of AuNPs. This potentially unique work offers various approaches to R
Author : Terry Wayne Harper
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (225 download)
Download or read book Effects of Particle Size on DNA-linked Gold Nanoparticle Aggregates written by Terry Wayne Harper and published by . This book was released on 2005 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eun Ji Chung
Publisher : Elsevier
ISBN 13 : 0128166630
Total Pages : 442 pages
Book Rating : 4.1/5 (281 download)
Download or read book Nanoparticles for Biomedical Applications written by Eun Ji Chung and published by Elsevier. This book was released on 2019-11-19 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles for Biomedical Applications: Fundamental Concepts, Biological Interactions and Clinical Applications brings into one place information on the design and biomedical applications of different classes of nanoparticles. While aspects are dealt with in individual journal articles, there is not one source that covers this area comprehensively. This book fills this gap in the literature. - Outlines an in-depth review of biomedical applications of a variety of nanoparticle classes - Discusses the major techniques for designing nanoparticles for use in biomedicine - Explores safety and regulatory aspects for the use of nanoparticles in biomedicine
Author : Chinmay Nitin Afzulpurkar
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (132 download)
Download or read book Study on Forming DNA-mediated Nanoparticle Conjugates written by Chinmay Nitin Afzulpurkar and published by . This book was released on 2022 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis is to establish a rapid, robust, and reproducible procedure to controllably assemble DNA-functionalized Au nanoparticles (AuNPs) into satellite-shaped nanostructures using sequence-specific DNA hybridization. A target DNA strand with COVID-19sequence (t-DNA) is used as a bridge to connect a capture DNA functionalized on a 50nm gold nanoparticle (C-AuNP) and a probe DNA functionalized on a 30nm nanoparticle (P-AuNP), creating C-AuNP/t-DNA/P-AuNP conjugates. The C-DNA is complementary to a portion of t-DNA, and PDNA is complementary to the other portion of t-DNA. The parameters that affect the conjugate formation, including hybridization buffer strength, hybridization temperature, and DNA lengths, have been studied to increase the efficiency of the process. It is concluded that the hybridization buffer containing 0.6M NaCl at 50 degrees Celcius consistently formed the nanostructures of CAuNP/t-DNA/P-AuNP conjugates. The hybridization time for each of C-AuNP/t-DNA and P-AuNP/tDNA hybridization was 10 minutes. The optimum nanosatellite formations were obtained when50 nm AuNPs were functionalized with a mixture of 48-base C-DNA and 18-base spacer DNA and30 nm AuNPs were functionalized with a mixture of 46-base P-DNA and 18-base spacer DNA. This sequence-specific controlled formation of nanosatellite structures can be potentially implemented into many fields, such as detection of DNA and RNA of specific pathogens, food safety, and clinical and forensic research.
Author : Catherine Louis
Publisher : World Scientific
ISBN 13 : 1786341263
Total Pages : 681 pages
Book Rating : 4.7/5 (863 download)
Download or read book Gold Nanoparticles For Physics, Chemistry And Biology (Second Edition) written by Catherine Louis and published by World Scientific. This book was released on 2017-06-02 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold Nanoparticles for Physics, Chemistry and Biology offers an overview of recent research into gold nanoparticles, covering their discovery, usage and contemporary practical applications.This Second Edition begins with a history of over 2000 years of the use of gold nanoparticles, with a review of the specific properties which make gold unique. Updated chapters include gold nanoparticle preparation methods, their plasmon resonance and thermo-optical properties, their catalytic properties and their future technological applications. New chapters have been included, and reveal the growing impact of plasmonics in research, with an introduction to quantum plasmonics, plasmon assisted catalysis and electro-photon conversion. The growing field of nanoparticles for health is also addressed with a study of gold nanoparticles as radiosensibiliser for radiotherapy, and of gold nanoparticle functionalisation. This new edition also considers the relevance of bimetallic nanoparticles for specific applications.World-class scientists provide the most up-to-date findings for an introduction to gold nanoparticles within the related areas of chemistry, biology, material science, optics and physics. It is perfectly suited to advanced level students and researchers looking to enhance their knowledge in the study of gold nanoparticles.
Author : Regina Abla Tudzi
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (843 download)
Download or read book Effect of Nucleobase Complexation on Gold Nanoparticle Formation written by Regina Abla Tudzi and published by . This book was released on 2012 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability of some unique DNA sequences to act as templates for metal ions and for organization of metal nanoparticle is investigated in this study. My two main objectives were to develop (synthesize, characterize) DNA sequences that have a novel quadruplex structural motif that offers non-electrostatic binding site(s) for metal ions, and to study the interaction of metal nanoparticle(s) (MNP) with such DNA quadruplex structures and possibly develop methods for the predictable assembly of MNPs on DNA quadruplex sequences. My focus was the synthesis of gold and silver nanoparticles. My results included characterization of the DNA quadruplexes and how such sequences interact with metal ions. I have used UV-visible spectrophotometry, agarose gel electrophoresis, and circular dichroism to visualize the folding of the sequences into quadruplex structures in the presence of metal ions. I have also used dynamic laser light scattering to investigate the formation of nonspecific DNA aggregates. I synthesized gold nanoparticles in the presence of G-rich DNA sequences and the results obtained showed that the presence of G-rich sequence does modulate the size of the gold nanoparticles formed. Larger gold nanoparticles were observed in the presence of some of the sequences used.
Author :
Publisher : Academic Press
ISBN 13 : 0123751772
Total Pages : 307 pages
Book Rating : 4.1/5 (237 download)
Download or read book Handbook of Nanofabrication written by and published by Academic Press. This book was released on 2010-05-25 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the devices and systems used in modern industry are becoming progressively smaller and have reached the nanoscale domain. Nanofabrication aims at building nanoscale structures, which can act as components, devices, or systems, in large quantities at potentially low cost. Nanofabrication is vital to all nanotechnology fields, especially for the realization of nanotechnology that involves the traditional areas across engineering and science. - Includes chapters covering the most important Nanofabrication techniques, which aids comprehensive understanding of the latest manufacturing technologies encountered in the field of nano-level manufacturing which is essential for preparing for advanced study and application in nanofabrication techniques by enabling thorough understanding of the entire nanofabrication process as it applies to advanced electronic and related manufacturing technologies - Each chapter covers a nanofabrication technique comprehensively, which allows the reader to learn to produce nanometer-level products as well as collect, process, and analyze data, improve process parameters, and how to assist engineers in research, development and manufacture of the same - Includes contributions from recognized experts from around the globe, making the reader aware of variations in similar techniques applied in different geographical locations and is better positioned to establish all possible global applications
Author : Bing Zhou
Publisher : Springer Science & Business Media
ISBN 13 : 0387346880
Total Pages : 342 pages
Book Rating : 4.3/5 (873 download)
Download or read book Nanotechnology in Catalysis 3 written by Bing Zhou and published by Springer Science & Business Media. This book was released on 2007-09-05 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume continues the tradition formed in Nanotechnology in Catalysis 1 and 2. As with those books, this one is based upon an ACS symposium. Some of the most illustrious names in heterogeneous catalysis are among the contributors. The book covers: Design, synthesis, and control of catalysts at nanoscale; understanding of catalytic reaction at nanometer scale; characterization of nanomaterials as catalysts; nanoparticle metal or metal oxides catalysts; nanomaterials as catalyst supports; new catalytic applications of nanomaterials.
Author : Suchetan Pal
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (859 download)
Download or read book DNA Directed Self-assembly of Plasmonic Nanoparticles written by Suchetan Pal and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Deoxyribonucleic acid (DNA), a biopolymer well known for its role in preserving genetic information in biology, is now drawing great deal of interest from material scientists. Ease of synthesis, predictable molecular recognition via Watson-Crick base pairing, vast numbers of available chemical modifications, and intrinsic nanoscale size makes DNA a suitable material for the construction of a plethora of nanostructures that can be used as scaffold to organize functional molecules with nanometer precision. This dissertation focuses on DNA-directed organization of metallic nanoparticles into well-defined, discrete structures and using them to study photonic interaction between fluorophore and metal particle. Presented here are a series of studies toward this goal. First, a novel and robust strategy of DNA functionalized silver nanoparticles (AgNPs) was developed and DNA functionalized AgNPs were employed for the organization of discrete well-defined dimeric and trimeric structures using a DNA triangular origami scaffold. Assembly of 1:1 silver nanoparticle and gold nanoparticle heterodimer has also been demonstrated using the same approach. Next, the triangular origami structures were used to co-assemble gold nanoparticles (AuNPs) and fluorophores to study the distance dependent and nanogap dependencies of the photonic interactions between them. These interactions were found to be consistent with the full electrodynamic simulations. Further, a gold nanorod (AuNR), an anisotropic nanoparticle was assembled into well-defined dimeric structures with predefined inter-rod angles. These dimeric structures exhibited unique optical properties compared to single AuNR that was consistent with the theoretical calculations. Fabrication of otherwise difficult to achieve 1:1 AuNP- AuNR hetero dimer, where the AuNP can be selectively placed at the end-on or side-on positions of anisotropic AuNR has also been shown. Finally, a click chemistry based approach was developed to organize sugar modified DNA on a particular arm of a DNA origami triangle and used them for site-selective immobilization of small AgNPs.
Author : Michael L. Elmuccio
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (741 download)
Download or read book Progress Towards Visualizing the Controlled Assembly of Gold Nanoparticles on DNA written by Michael L. Elmuccio and published by . This book was released on 2011 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our laboratory has used the 1,4,5,8 Naphthalenetetracarboxylic diimine (NDI) unit to develop threading polyintercalators that bind DNA with the NDI units intercalated in between GpG steps and two different peptide linkers, which connect the NDI units, situated in either the major or minor grooves. The first generation bisintercalators, G3K and [beta]Ala3K, were shown to bind two different sequences of DNA, where the peptide linkers reside in the major and minor grooves respectively. These binding modules were then combined to generate threading polyintercalators that bound different DNA sequences with simultaneous occupation of both grooves. In particular, a cyclic bisintercalator was designed and DNAse I footprinting revealed a strong preference for the sequence 5'-GGTACC-3'. NMR structural studies of the complex with d(CGGTACCG)2 verified a pseudocatenane structure in which the NDI units reside four base pairs apart, with one linker located in the minor groove and the other in the major groove. This was the first structurally well-characterized pseudocatenane complex between a sequence-specific cyclic bisintercalator and its preferred binding sequence. The ability to simultaneously occupy both groves of the same sequence is interesting for several reasons. Most significantly, it raises questions about a complex DNA intercalator's ability to locate its preferred sequence within a long strand of DNA. In order to directly assess this, the intercalator was modified (CBI-Cys) to incorporate a gold nanoparticle probe to allow for the direct visualization of the intercalator locating its preferred sequence within a long DNA strand. The appropriate protocols to visualize DNA using electron and atomic force microscopy were unsuccessful; however, the foundation has been set for future work to develop the appropriate method to determine the mechanism by which the cyclic bisintercalator locates its preferred sequence. Additionally, the bisintercalators developed in our laboratory offered a unique opportunity to exploit their sequence specificity for controlled nanoparticle assembly. Over the past decade, nanoparticles and DNA have been used to develop novel nanoparticle assembly systems with the goal of developing electronic devices and nanomaterials. The G3K bisintercalator was synthetically modified to incorporate a gold nanoparticle probe. This intercalator-nanoparticle conjugate, BisKC·Au, maintained its binding specificity (5'-GGTACC-3') to a modified DNA fragment containing multiple G3K binding sites. The atomic force microscope has become the most promising tool in visualizing individual DNA molecules. A modified procedure utilized APS to allow for the direct visualizing of plasmid DNA. The framework is now in place to confirm the controlled assembly of the gold nanoparticles. This protocol can then be used for the [beta]Ala3K bisintercalator to lead to the development of a nanoparticle assembly system that can precisely control the organization of multiple types of nanoparticles.
Author :
Publisher : Academic Press
ISBN 13 : 0123743966
Total Pages : 2785 pages
Book Rating : 4.1/5 (237 download)
Download or read book Comprehensive Nanoscience and Technology written by and published by Academic Press. This book was released on 2010-10-29 with total page 2785 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Introduction: Nanotechnology and its underpinning sciences are progressing with unprecedented rapidity. With technical advances in a variety of nanoscale fabrication and manipulation technologies, the whole topical area is maturing into a vibrant field that is generating new scientific research and a burgeoning range of commercial applications, with an annual market already at the trillion dollar threshold. The means of fabricating and controlling matter on the nanoscale afford striking and unprecedented opportunities to exploit a variety of exotic phenomena such as quantum, nanophotonic and nanoelectromechanical effects. Moreover, researchers are elucidating new perspectives on the electronic and optical properties of matter because of the way that nanoscale materials bridge the disparate theories describing molecules and bulk matter. Surface phenomena also gain a greatly increased significance; even the well-known link between chemical reactivity and surface-to-volume ratio becomes a major determinant of physical properties, when it operates over nanoscale dimensions. Against this background, this comprehensive work is designed to address the need for a dynamic, authoritative and readily accessible source of information, capturing the full breadth of the subject. Its six volumes, covering a broad spectrum of disciplines including material sciences, chemistry, physics and life sciences, have been written and edited by an outstanding team of international experts. Addressing an extensive, cross-disciplinary audience, each chapter aims to cover key developments in a scholarly, readable and critical style, providing an indispensible first point of entry to the literature for scientists and technologists from interdisciplinary fields. The work focuses on the major classes of nanomaterials in terms of their synthesis, structure and applications, reviewing nanomaterials and their respective technologies in well-structured and comprehensive articles with extensive cross-references. It has been a constant surprise and delight to have found, amongst the rapidly escalating number who work in nanoscience and technology, so many highly esteemed authors willing to contribute. Sharing our anticipation of a major addition to the literature, they have also captured the excitement of the field itself in each carefully crafted chapter. Along with our painstaking and meticulous volume editors, full credit for the success of this enterprise must go to these individuals, together with our thanks for (largely) adhering to the given deadlines. Lastly, we record our sincere thanks and appreciation for the skills and professionalism of the numerous Elsevier staff who have been involved in this project, notably Fiona Geraghty, Megan Palmer and Greg Harris, and especially Donna De Weerd-Wilson who has steered it through from its inception. We have greatly enjoyed working with them all, as we have with each other.
Author : Bernhard Lippert
Publisher : John Wiley & Sons
ISBN 13 : 9783906390208
Total Pages : 628 pages
Book Rating : 4.3/5 (92 download)
Download or read book Cisplatin written by Bernhard Lippert and published by John Wiley & Sons. This book was released on 1999 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: 30 years after its discovery as an antitumor agent, cisplatin represents today one of the most successful drugs in chemotherapy. This book is intended to reminisce this event, to take inventory, and to point out new lines of development in this field. Divided in 6 sections and 22 chapters, the book provides an up-to-date account on topics such as - the chemistry and biochemistry of cisplatin, - the clinical status of Pt anticancer drugs, - the impact of cisplatin on inorganic and coordination chemistry, - new developments in drug design, testing and delivery. It also includes a chapter describing the historical development of the discovery of cisplatin. The ultimate question - How does cisplatin kill a cell? - is yet to be answered, but there are now new links suggesting how Pt binding to DNA may trigger a cascade of cellular reactions that eventually result in apoptosis. p53 and a series of damage recognition proteins of the HMG-domain family appear to be involved. The book addresses the problem of mutagenicity of Pt drugs and raises the question of the possible relevance of the minor DNA adducts, e.g. of interstrand cross-links, and the possible use of trans-(NH3)2Pt(II)-modified oligonucleotides in antisense and antigene strategies. Our present understanding of reactions of cisplatin with DNA is based upon numerous model studies (from isolated model nucleobases to short DNA fragments) and application of a large body of spectroscopic and other physico-chemical techniques. Thanks to these efforts there is presently no other metal ion whose reactions with nucleic acids are better understood than Pt. In a series of chapters, basic studies on the interactions of Pt electrophiles with nucleobases, oligonucleotides, DNA, amino acids, peptides and proteins are reported, which use, among others, sophisticated NMR techniques or X-ray crystallography, to get remarkable understanding of details on such reactions. Reactivity of cisplatin, once bound to DNA and formerly believed to be inert enough to stay, is an emerging phenomenon. It has (not yet) widely been studied but is potentially extremely important. Medicinal bioinorganic chemistry - the role of metal compounds in medicine - has received an enormous boost from cisplatin, and so has bioinorganic chemistry as a whole. There is hardly a better example than cisplatin to demonstrate what bioinorganic chemistry is all about: The marriage between classic inorganic (coordination) chemistry and the other life sciences - medicine, pharmacy, biology, biochemistry. Cisplatin has left its mark also on areas that are generally considered largely inorganic. The subject of mixed-valance Pt compounds is an example: From the sleeping beauty it made its way to the headlines of scientific journals, thanks to a class of novel Pt antitumor agents, the so-called "platinum pyrimidine blues". In the aftermath diplatinum (III) compounds were recognized and studies in large numbers, and now an organometalic chemistry of these diplatinum (III) species is beginning to emerge. The final section of the book is concerned with new developments such as novel di- and trinuclear Pt(II) drugs with DNA binding properties different from those of cisplatin, with orally active Pt(IV) drugs which are presently in clinical studies, and with attempts to modify combinatorial chemistry in such a way that it may become applicable to fast screening of Pt antitumor drugs. The potential of including computational methods in solving questions of Pt-DNA interactions is critically dealt with in the concluding chapter.
