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Development Of Self Assembled Dna Nanoparticle Nanostructures For Surface Enhanced Raman Spectroscopy Sers
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Book Synopsis Development of Self-assembled DNA-Nanoparticle Nanostructures for Surface Enhanced Raman Spectroscopy (SERS) by : 林郁庭
Download or read book Development of Self-assembled DNA-Nanoparticle Nanostructures for Surface Enhanced Raman Spectroscopy (SERS) written by 林郁庭 and published by . This book was released on 2014 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface-Enhanced Raman Scattering by : Zhong-Qun Tian
Download or read book Surface-Enhanced Raman Scattering written by Zhong-Qun Tian and published by John Wiley & Sons Incorporated. This book was released on 2010-06-14 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-Enhanced Raman Spectroscopy: Principles, Experiments, and Applications is a comprehensive, up to date, and balanced treatment of the theoretical and practical aspects of Surface-Enhanced Raman Scattering (SERS), a useful branch of spectroscopy for several areas of science. This book describes the basic principles of SERS, including SERS mechanisms, performing SERS measurements, and interpreting data. Also emphasized are applications in electrochemistry; catalysis; surface processing and corrosion; Self-Assemble-Layer and L-B Films; polymer science; biology; medicine and drug analysis; sensors; fuel cells; forensics; and archaeology. It is an essential guide for student and professional analytical chemists.
Book Synopsis Raman Spectroscopy for Nanomaterials Characterization by : Challa S.S.R. Kumar
Download or read book Raman Spectroscopy for Nanomaterials Characterization written by Challa S.S.R. Kumar and published by Springer Science & Business Media. This book was released on 2012-03-30 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: First volume of a 40-volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Raman spectroscopy for the characterization of nanomaterials. Modern applications and state-of-the-art techniques are covered and make this volume essential reading for research scientists in academia and industry.
Book Synopsis Quantum Plasmonics by : Sergey I. Bozhevolnyi
Download or read book Quantum Plasmonics written by Sergey I. Bozhevolnyi and published by Springer. This book was released on 2016-11-26 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest results of quantum properties of light in the nanostructured environment supporting surface plasmons, including waveguide quantum electrodynamics, quantum emitters, strong-coupling phenomena and lasing in plasmonic structures. Different approaches are described for controlling the emission and propagation of light with extreme light confinement and field enhancement provided by surface plasmons. Recent progress is reviewed in both experimental and theoretical investigations within quantum plasmonics, elucidating the fundamental physical phenomena involved and discussing the realization of quantum-controlled devices, including single-photon sources, transistors and ultra-compact circuitry at the nanoscale.
Book Synopsis Materials Nanoarchitectonics by : Katsuhiko Ariga
Download or read book Materials Nanoarchitectonics written by Katsuhiko Ariga and published by Elsevier. This book was released on 2023-12-07 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials Nanoarchitectonics: From Integrated Molecular Systems to Advanced Devices provides the latest information on the design and molecular manipulation of self-organized hierarchically structured systems using tailor-made nanoscale materials as structural and functional units. The book is organized into three main sections that focus on molecular design of building blocks and hybrid materials, formation of nanostructures, and applications and devices. Bringing together emerging materials, synthetic aspects, nanostructure strategies, and applications, the book aims to support further progress, by offering different perspectives and a strong interdisciplinary approach to this rapidly growing area of innovation. This is an extremely valuable resource for researchers, advanced students, and scientists in industry, with an interest in nanoarchitectonics, nanostructures, and nanomaterials, or across the areas of nanotechnology, chemistry, surface science, polymer science, electrical engineering, physics, chemical engineering, and materials science. - Offers a nanoarchitectonic perspective on emerging fields, such as metal-organic frameworks, porous polymer materials, or biomimetic nanostructures - Discusses different approaches to utilizing "soft chemistry" as a source for hierarchically organized materials - Offers an interdisciplinary approach to the design and construction of integrated chemical nano systems - Discusses novel approaches towards the creation of complex multiscale architectures
Book Synopsis Gutenberg-style Printing of Self-assembled Metal Nanoparticle Aarays by : Yuanhui Zheng
Download or read book Gutenberg-style Printing of Self-assembled Metal Nanoparticle Aarays written by Yuanhui Zheng and published by . This book was released on 2011 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of the work presented in this thesis was to combine top-down and bottom-up techniques to develop a nanofabrication method that would allow for the highly parallel and repetitive production of any desired nanostructure. This was realised by (1) immobilising gold nanoparticle (AuNP) building blocks onto lithographically produced nanopatterns (stamps) by electrostatic self-assembly, followed by (2) transfer of the surface-confined AuNP assemblies from the stamps to non-patterned capture substrates by a DNA-directed nanoprinting technique.A surfactant Tween 20 mediated AuNP surface modification was developed as a rapid synthesis of highly stable negatively charged AuNP conjugates. Three different types of AuNP conjugates bearing different surface ligands - deoxyribonucleic acid (DNA), SH-PEG-COOH, and a mixture of DNA and SH-PEG-COOH (denoted AuNP/DNA, AuNP/SH-PEG-COOH and AuNP/DNA/SH-PEG-COOH) - were successfully synthesised at salt concentration of 0.5 M using this approach. The AuNP/DNA conjugates showed high colloidal stability in environments of high ionic strength (up to 1.5 M NaCl in the presence of Tween 20). The DNA loading densities on different sized AuNPs were investigated and found to be approximately 37, 102 and 231 DNA strands per NP for 20, 30 and 40 nm AuNP/DNA conjugates, respectively. The AuNP/SH-PEG-COOH conjugates showed sharp size-dependent colloidal stability thresholds as a function of ionic strength. A size-selective AuNP separation method was developed based on the colloidal stability of AuNP/SH-PEG-COOH conjugates of different sizes. A colloidal AuNP solution with bimodal size distribution (20 and 40 nm) was successfully separated using this approach, with more than 99.4% accuracy.Templating nanopatterns onto which the AuNP building blocks were immobilised comprised of elevated and recessed gold features on silica-coated silicon substrates were fabricated by means of electron beam lithography (EBL). Various geometries of the templating nanostructures, including nanolines, nanocrosses, nanotriangles, and nanodisks, were produced. Plain gold substrates were fabricated by evaporating chromium (Cr) and gold (Au) onto planar silicon wafers. The gold nanopatterns and the plain gold substrates were used as stamps and capture substrates for the DNA-directed AuNP printing, respectively. Protocols for surface modification of the stamps and capture substrates were developed; the former were surface-selectively modified with PEG-silane and SH-PEG-NH2 and the latter modified with DNA strands.The negatively charged AuNP conjugates were electrostatically assembled onto the EBL produced nanopatterns. When using AuNP/DNA conjugates as building blocks, the NPs were specifically immobilised onto positively charged gold nanopatterns, with high NP loadings. The EBL defined nanopatterns were well replicated by the self-assembled AuNP/DNA conjugates and non-specific adsorption was found to be extraordinarily low. When using AuNP/SH-PEG-COOH conjugates as building blocks, hexagonal close-packed (hcp) ordered AuNP superstructures and significant non-specific adsorption of AuNPs were observed. This is believed to be caused by AuNP agglomeration and precipitation during the self-assembly process. When AuNP/DNA/SH-PEG-COOH conjugates were used as NP building blocks, the NPs were specifically adsorbed onto the nanopatterns, forming closely packed AuNP assemblies on the nanopatterns. A two-step self-assembly strategy, that made use of electrostatic and DNA-directed AuNP immobilisation, was furthermore developed, enabling the fabrication of core-satellite AuNP assemblies (one 30 nm NP surrounded by six to nine 20 nm NPs).An affinity-based nanoprinting technique that exploits electrostatic AuNP assembly and DNA-directed replication of lithographically defined nanostructures was developed. The negatively charged AuNP/DNA conjugates were electrostatically immobilised onto SH-PEG-NH2 modified templating nanostructures and then printed onto non-patterned capture substrates, functionalised with DNA complementary to the AuNP-confined DNA, through DNA-DNA interaction. Single lines of AuNPs and regular NP patterns with close to single-particle resolution could be printed. Dense AuNP loading and high transfer yields were observed over three consecutive printing cycles. A UV-ozone surface cleaning method was developed to remove the AuNP-bound DNA strands, which could make the replicated AuNP nanopatterns applicable to a wide range of applications that require pristine metal NP arrays, e.g. plasmonic biosensors.The core-satellite assemblies were studied as substrates for Surface Enhanced Raman Scattering (SERS). The SERS signals of benzenethiol on the core-satellite AuNP assemblies were shown to be dependent on the excitation wavelength: the SERS effect was negligible when excited at 514 nm, while the SERS signals were significantly enhanced compared with the widely spaced core AuNPs and planar gold substrates when excited at 633 nm and 782 nm, respectively. The larger SERS enhancements for the core-satellite AuNP assemblies could be due to the formation of "hot spots" between core and satellite AuNPs. The detection limit of benzenethiol was found to be between 1-10 nM when using the core-satellite AuNP assemblies as SERS substrates.
Book Synopsis Design of Self-Assembling Materials by : Ivan Coluzza
Download or read book Design of Self-Assembling Materials written by Ivan Coluzza and published by Springer. This book was released on 2018-03-23 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides in-depth insights into assembling dynamics of proteins, DNA and other nanoparticles. The applications of basic knowledge in the development of artificial self-assembling systems will be discussed and state of the art methodology in the field will be presented.This interdisciplinary work brings together aspects of different fields of expertise such as Biology, Physics and Material Sciences and is intended for researchers, professors and graduate students interested in the design of self-assembling materials.
Book Synopsis Surface-Enhanced Vibrational Spectroscopy by : Ricardo Aroca
Download or read book Surface-Enhanced Vibrational Spectroscopy written by Ricardo Aroca and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Enhanced Vibrational Spectroscopy (SEVS) has reached maturity as an analytical technique, but until now there has been no single work that describes the theory and experiments of SEVS. This book combines the two important techniques of surface-enhanced Raman scattering (SERS) and surface-enhanced infrared (SEIR) into one text that serves as the definitive resource on SEVS. Discusses both the theory and the applications of SEVS and provides an up-to-date study of the state of the art Offers interpretations of SEVS spectra for practicing analysts Discusses interpretation of SEVS spectra, which can often be very different to the non-enhanced spectrum - aids the practicing analyst
Book Synopsis Surface Enhanced Raman Spectroscopy by : Sebastian Schlücker
Download or read book Surface Enhanced Raman Spectroscopy written by Sebastian Schlücker and published by John Wiley & Sons. This book was released on 2011-09-19 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basic theoretical and practical knowledge to new exciting developments in the field with a focus on analytical and life science applications, this monograph shows how to apply surface-enhanced Raman scattering (SERS) for solving real world problems. From the contents: * Theory and practice of SERS * Analytical applications * SERS combined with other analytical techniques * Biophysical applications * Life science applications including various microscopies Aimed at analytical, surface and medicinal chemists, spectroscopists, biophysicists and materials scientists. Includes a Foreword by the renowned Raman spectroscopist Professor Wolfgang Kiefer, the former Editor-in-Chief of the Journal of Raman Spectroscopy.
Book Synopsis Bottom-up Construction of Complex Metal Nanoparticle Structures with DNA as a Chaperone by : Xin Luo
Download or read book Bottom-up Construction of Complex Metal Nanoparticle Structures with DNA as a Chaperone written by Xin Luo and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nanoscale metal structures has been an essential topic in modern nanotechnology due to their wide range of applications in catalysis, sensing, diagnosis, medicine and optics. Plasmonic metal nanostructures have attracted particular attention, as their light-focusing property can be efficiently tuned by changing their spatial structure. Traditionally, top-down lithography approaches have been the main tool to implement precise metal nanostructure designs, which, however, has shown drawbacks such as low throughput, high cost and low resolution when reaching the sub-5 nm scale. Over the past two decades, the field of DNA nanotechnology has enabled the fabrication of increasingly complex one-, two- and three-dimensional nanostructures with unprecedented specificity, programmability, and sub-nanometer precision. These DNA structures have been demonstrated to be an ideal chaperone for the bottom-up self-assembly of metal nanostructures, pushing the boundaries of plasmonic nanophotonics design and fabrication. This thesis targets a few challenges in constructing complex metal nanostructures with DNA as a template. First, to access hierarchical assembly in 3D, nanoparticles must be functionalized with anisotropic valency-controlled DNA strands. We developed a simple one-step method to encode 3D DNA strand patterns to gold nanoparticles with a controlled number of unique DNA strands in a predesigned spatial arrangement, through encapsulating the gold nanoparticle into a predesigned DNA minimal nanocage. The encapsulated gold nanoparticle, as a building block, inherits the 3D anisotropic molecular information from the DNA nanocage with enhanced structural stability, which allows its hierarchical self-assembly into complex metal architectures. Second, we developed an Assemble, Grow and Lift-Off (AGLO) strategy to construct robust standalone gold nanostructures with pre-designed customizable shapes in solution, using only a simple 2D DNA origami sheet as a transient template. AuNP seeds were assembled on DNA origami template in a predesigned shape, grown to merge into robust gold structures, and lifted-off to regenerate and recycle the DNA origami template. Finally, we discovered a Contact-dependent Localized Electrochemical Ripening (CLER) mechanism with DNA-templated metal growth, which, for the first time, systematically explains the heterogenous silver deposition phenomenon. The mechanism can be manipulated to synthesize deterministic asymmetric metal structures with core-shell NPs of pre-designed arrangements in a one-pot system, which demonstrates promising applications in surface-enhanced Raman spectroscopy. Overall, the work presented in this thesis not only pushes DNA-templated metal structures forward by demonstrating practical strategies to increase the 3D metal structure complexity and robustness, but also offers valuable fundamental insights in metal growth mechanisms. This knowledge provides guidelines for the future design and construction of DNA-templated metal structures. More importantly, the new mechanisms discovered contribute to the fundamental understanding of the metal nanoparticle synthesis process"--
Book Synopsis Nanostructures and Nanoconstructions based on DNA by : Yuri M. Yevdokimov
Download or read book Nanostructures and Nanoconstructions based on DNA written by Yuri M. Yevdokimov and published by CRC Press. This book was released on 2012-06-04 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionally optimized biomolecules and their complexes present attractive objects in the production of functionalized nanoobjects. Indeed, nucleic acid-based molecules are primary candidates as building blocks for development of nanoscale systems and devices. Written for chemists, physicists, molecular biologists, and students in related fields, Nanostructures and Nanoconstructions Based on DNA covers specific properties of metallic nanoparticles, and compares their properties with those related to nanoobjects formed by biological molecules. It also discloses details of formation and physicochemical peculiarities of the DNA nanostructures and DNA-based nanoconstructions. Furthermore, the book considers: The peculiarities of two approaches to structural DNA nanotechnology, i.e. to creation of spatial nanoobjects formed by DNA molecules and their complexes: (i) the hybridization approach and (ii) the liquid-crystalline approach The physicochemical properties of DNA nanostructures as well as "liquid" and "rigid" DNA-based nanoconstructions The connection of liquid crystalline phase formation in DNA with possible nanotechnological applications This timely reference covers more DNA physics and molecular biology than any other published title. The authors discuss how nucleic acid molecules and their complexes with chemical and biologically active compounds are an area of increasing significance in the development of various nanoscale systems and devices of practical importance.
Book Synopsis Design and Synthesis of Nanomaterials for Surface-enhanced Raman Scattering, Fuel Cell Technology, and Photonics by : Pedro Henrique Cury Camargo
Download or read book Design and Synthesis of Nanomaterials for Surface-enhanced Raman Scattering, Fuel Cell Technology, and Photonics written by Pedro Henrique Cury Camargo and published by . This book was released on 2009 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first part of my dissertation, I developed two approaches for selectively probing the SERS activities of individual hot spots, i.e., experimentally detect the SERS signals only for the molecules that are trapped within the hot-spot region in individual Ag nanoparticle dimers. Then, I performed a systematic investigation on the SERS activity of individual dimers composed of two closed spaced Ag nanoparticles. By utilizing Ag nanoparticles displaying a variety of well-defined shapes, sizes and orientations to construct the dimers, I were able to precisely correlate the detected SERS signals to the specific geometry of individual hot spots. In the second part of this dissertation, I performed a systematic investigation on the galvanic replacement reaction between PtCl62- and Pd nanocrystals with well-defined shapes including octahedra, nanocubes, and nanorods. The resultant hollow Pd-Pt bimetallic nanostructures were employed as electrocatalysts for the oxygen reduction reaction (ORR). Our results demonstrated that the nanostructures derived from Pd octahedra displayed the highest ORR activity, being 1.7 times more active based on equivalent Pt mass than the commercial Pt/C. I also conducted a mechanistic study on the galvanic replacement reaction between AuCl4- and Pd nanorods. Differently from the Pd-Pt system, a new type of hybrid nanostructure in the tadpole shape consisting of a Au head and a Pd tail was obtained due to a localized galvanic replacement mechanism. As an extension of my work to develop new electrocatalysts for the ORR, a template-engaged reaction was utilized for the synthesis of RuSe2+[delta] nanotubes. The RuSe2+[delta] nanotubes were active towards the ORR and displayed no loss in activity in the presence of methanol, as opposed to commercial Pt/C. Finally, the template-engaged reaction was applied to the synthesis of Se@MSe (M = Zn, Cd or Pb) colloidal spheres having similar sizes but different compositions. They were utilized as building blocks to obtain 3D photonic crystals via self-assembly. Moreover, superparagametic properties could be obtained via the incorporation of Fe3O4 nanoparticles into the a-Se cores. Taken together, this represents a versatile approach to the synthesis of magnetoactive spheres with similar dimensions but a variety of compositions and properties.
Book Synopsis DNA Engineered Noble Metal Nanoparticles by : Ignác Capek
Download or read book DNA Engineered Noble Metal Nanoparticles written by Ignác Capek and published by John Wiley & Sons. This book was released on 2015-03-23 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing interest in the use of nanoparticles modified with DNAs, viruses, peptides and proteins for the rational design of nanostructured functional materials and their use in biosensor applications. The challenge is to control the organization of biomolecules on nanoparticles while retaining their biological activity as potential chemical and gene therapeutics. These noble metal nanoparticles/biomolecules conjugates have specific properties and therefore they are attractive materials for nanotechnology in biochemistry and medicine. In this book, the author review work performed dealing with the DNA structure and functionalities, interactions between DNA, noble metal nanoparticles, surface active agents, solvents and other additives. Particular attention is given to how the DNA's chain length and the DNA conformation affect the interaction and structure of the nanoconjugates and nanostructures that are formed. Also discussed are the recent advances in the preparation, characterization, and applications of noble metal nanoparticles that are conjugated with DNA aptamers and oligomers. The advantages and disadvantages of functionalized nanoparticles through various detection modes are highlighted, including colorimetry, fluorescence, electrochemistry, SPR, and, mass spectrometry for the detection of small molecules and biomolecules. The functionalized noble metal nanoparticles are selective and sensitive for the analytes, showing their great potential in biosensing. Furthermore, this book reviews recent progress in the area of DNA-noble metal nanoparticles based artificial nanostructures, that is, the preparation, collective properties, and applications of various DNA-based nanostructures are also described.
Download or read book DNA Nanotechnology written by Chunhai Fan and published by Springer Nature. This book was released on 2020-09-07 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. The chapter "DNA-Programmed Chemical Synthesis of Polymers and Inorganic Nanomaterials" is available open access under a CC BY 4.0 License via link.springer.com.
Book Synopsis Confocal Raman Microscopy by : Jan Toporski
Download or read book Confocal Raman Microscopy written by Jan Toporski and published by Springer. This book was released on 2018-03-01 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition provides a cutting-edge overview of physical, technical and scientific aspects related to the widely used analytical method of confocal Raman microscopy. The book includes expanded background information and adds insights into how confocal Raman microscopy, especially 3D Raman imaging, can be integrated with other methods to produce a variety of correlative microscopy combinations. The benefits are then demonstrated and supported by numerous examples from the fields of materials science, 2D materials, the life sciences, pharmaceutical research and development, as well as the geosciences.
Book Synopsis Noble and Precious Metals by : Mohindar Seehra
Download or read book Noble and Precious Metals written by Mohindar Seehra and published by BoD – Books on Demand. This book was released on 2018-07-04 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of copper, silver, gold and platinum in jewelry as a measure of wealth is well known. This book contains 19 chapters written by international authors on other uses and applications of noble and precious metals (copper, silver, gold, platinum, palladium, iridium, osmium, rhodium, ruthenium, and rhenium). The topics covered include surface-enhanced Raman scattering, quantum dots, synthesis and properties of nanostructures, and its applications in the diverse fields such as high-tech engineering, nanotechnology, catalysis, and biomedical applications. The basis for these applications is their high-free electron concentrations combined with high-temperature stability and corrosion resistance and methods developed for synthesizing nanostructures. Recent developments in all these areas with up-to-date references are emphasized.
Book Synopsis Advis: +Avis+ aux Parisiens. Messieurs; si vostre propre conservation... by :
Download or read book Advis: +Avis+ aux Parisiens. Messieurs; si vostre propre conservation... written by and published by . This book was released on 1652 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
