The Physical Properties of Organic Monolayers PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Physical Properties of Organic Monolayers PDF full book. Access full book title The Physical Properties of Organic Monolayers by Mitsumasa Iwamoto. Download full books in PDF and EPUB format.
Author: Mitsumasa Iwamoto
Publisher: World Scientific
ISBN: 9789812810397
Category : Science
Languages : en
Pages : 220
Get Book Here
Book Description
Ch. 5. Dielectric relaxation phenomena. 5.1. Rotational Debye Brownian motion model. 5.2. Relaxation process at an air-water interface. 5.3. Determination of dielectric relaxation time. 5.4. Summary. References -- ch. 6. Chiral phase separation. 6.1. Elastic energy and Bragg-Williams mixing energy. 6.2. Chiral phase separation. 6.3. Discrete one-dimensional CPS solution. 6.4. Summary. 6.5. Appendix. References -- ch. 7. Nonlinear effects. 7.1. SOS in orientational order parameters for C[symbol] monolayers. 7.2. Chirality representation. 7.3. SHG-CD effect. 7.4. SHG-MDC measuring system. 7.5. Quantum mechanical analysis of photoisomerization. 7.6. Summary. References -- ch. 8. Thermally-stimulated current. 8.1. Thermally-stimulated current. 8.2. Depolarization due to thermal stimulation. 8.3. TSC experiment. 8.4. Phase transition. 8.5. Thermodynamics approach to monolayers. 8.6. Summary. References -- ch. 9. Electronic properties at MIM interfaces. 9.1. Tunneling current and electronic device applications. 9.2. Nanometric interfacial electrostatic phenomena in ultrathin films. 9.3. I-V characteristic. 9.4. Summary. References.
Author: Mitsumasa Iwamoto
Publisher: World Scientific
ISBN: 9789812810397
Category : Science
Languages : en
Pages : 220
Get Book Here
Book Description
Ch. 5. Dielectric relaxation phenomena. 5.1. Rotational Debye Brownian motion model. 5.2. Relaxation process at an air-water interface. 5.3. Determination of dielectric relaxation time. 5.4. Summary. References -- ch. 6. Chiral phase separation. 6.1. Elastic energy and Bragg-Williams mixing energy. 6.2. Chiral phase separation. 6.3. Discrete one-dimensional CPS solution. 6.4. Summary. 6.5. Appendix. References -- ch. 7. Nonlinear effects. 7.1. SOS in orientational order parameters for C[symbol] monolayers. 7.2. Chirality representation. 7.3. SHG-CD effect. 7.4. SHG-MDC measuring system. 7.5. Quantum mechanical analysis of photoisomerization. 7.6. Summary. References -- ch. 8. Thermally-stimulated current. 8.1. Thermally-stimulated current. 8.2. Depolarization due to thermal stimulation. 8.3. TSC experiment. 8.4. Phase transition. 8.5. Thermodynamics approach to monolayers. 8.6. Summary. References -- ch. 9. Electronic properties at MIM interfaces. 9.1. Tunneling current and electronic device applications. 9.2. Nanometric interfacial electrostatic phenomena in ultrathin films. 9.3. I-V characteristic. 9.4. Summary. References.
Author: Mitsumasa Iwamoto
Publisher: World Scientific
ISBN: 9814492000
Category : Science
Languages : en
Pages : 217
Get Book Here
Book Description
This book provides a fundamental physical picture of various phenomena occurring in organic monolayers, dealing with dielectric, elastic, and electronic properties. The dielectric properties are discussed in terms of orientational order parameters, which are used to interpret the dielectric spectrum observed through Maxwell displacement current measurement and optical second harmonic generation measurement. The elastic theory of organic monolayers is based on that of liquid crystals and emphasis is placed on the interfacial effect when discussing the electronic properties of organic monolayers. The discussion in the book mainly concerns the structure dependence (dipole moment) and thickness dependence (interfacial effect) for various phenomena occurring in organic monolayers.
Author: Ann-Sofie Viola Margareta Hallbäck
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
Get Book Here
Book Description
Author: Ryan Charles Major
Publisher:
ISBN:
Category :
Languages : en
Pages : 308
Get Book Here
Book Description
Author: Mitsumasa Iwamoto
Publisher: World Scientific Publishing Company
ISBN: 9789814602976
Category : Science
Languages : en
Pages : 250
Get Book Here
Book Description
This book addresses the physical mechanisms involved in the characteristic electrical properties and the geometrical structures that are observed from dipolar monolayers composed of organic molecules by using dielectric physics, electrostatics, the physics of liquid crystal, and soft matter physics. The orientational order parameters, introduced to quantify the orientational structures of monolayers, guide us towards this goal. Dielectric polarizations are spontaneously generated from monolayers because of their orientational structures, and electrostatic energies due to these dielectric polarizations play a key role in forming the geometrical structures that are observed from monolayers. Free energy minimization is a powerful tool to understand the physical mechanisms that stabilize these geometrical structures because of the soft matter nature of monolayers. The approach makes this book unique among the literatures of monolayers.
Author: Peter Grutter
Publisher: World Scientific
ISBN: 1908979992
Category : Science
Languages : en
Pages : 443
Get Book Here
Book Description
Within nanoscience, an emerging discipline is the study of the physics and chemistry of single molecules. Molecules may be considered as the ultimate building blocks, and are therefore interesting for the development of molecular devices and for surface functionalization. Thus, it is interesting to study their properties when adsorbed on a suitable substrate such as a solid or crystal surface, and also for their potential applications in nano- or molecular-electronics and nanosensing. Investigations have been made possible by the advent of high resolution surface imaging and characterization techniques, commonly referred to as Scanning Probe Microscopes.This book focuses on the fascinating properties of the single molecules, and the difference between single molecules and ensembles of molecules is emphasized. As the first book intended for graduate courses in the field, after each chapter, students should be able to answer the question: “What physical or chemical properties do you learn from a single molecule in this particular context?” Contributed by experts across the disciplines, the book provides useful reference material for specialized practitioners in surface science, nanoscience and nanoelectronics.
Author: C. D. Bain
Publisher:
ISBN:
Category :
Languages : en
Pages : 37
Get Book Here
Book Description
The interfacial properties of organic materials are of critical importance in many applications, especially the control of wettability, adhesion, tribology, and corrosion. The relationships between the microscopic structure of an organic surface and its macroscopic physical properties are, however, only poorly understood. This short review presents a model system that has the ease of preparation and the structural definition required to provide a firm understanding of interfacial phenomena. Long-chain thiols, HS(CH2)nX, adsorb from solution onto gold and form densely packed, oriented monolayers. By varying the terminal functional group, X, of the thiol, organic surfaces can be created having a wide range of structures and properties. Keywords: Self assembly, Monolayers, Thiols, Gold, Organic surfaces.
Author: Yekaterina Leonidovna Lyubarskaya
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
Get Book Here
Book Description
"The research presented in this dissertation focuses on the study of self-assembled monolayers (SAMs) in the modification of surface properties of different substrates for various applications. Self-assembled monolayers are organic molecules that can be deposited on a variety of surfaces, such as those of metals, metal-oxides, and semiconductors. Formation of SAMs on any inorganic material provides a ubiquitous way to impart desirable chemical and physical properties of organic and biological molecules to the inorganic substrate. It has been demonstrated that single molecules and their self-assembled monolayers can significantly alter the physical and electronic properties of inorganic conductors; moreover, studies have shown that the performance of many electrical devices can be transformed by modifying inorganic electrodes with organic SAMs. This is especially important for the development of next generation of ultra-compact electronic devices, in which the ability to control the interfacial charge-transport with a single monolayer of organic molecules would be ideal. We have developed different organic electronic architectures as test beds for studying the effect of monolayer properties, such as structural and geometrical parameters, on their electronic properties. By using a typical organic electronic device as a sensitive test platform, slight changes in a monolayer property, such as length, have been detected by studying the current- voltage characteristics (JV) of organic diodes functionalized with self-assembled monolayers (SAMs) of varying alkyl chain-length. Next, we describe the application of SAMs based on n-octylphosphonic acid (C8PA) and 1H,1H,2H,2H-perfluorooctanephosphonic acid (PFOPA) as anode buffer layers in C60-based organic photovoltaic (OPV) devices. We used the OPV platform to compare stabilities of organic monolayers exposed to ambient conditions with SAMs positioned inside working OPV devices. We found that the stabilities are different, suggesting the degradation mechanisms are distinct. The degradation of the OPV efficiency with respect to air exposure was significantly reduced with the perfluorinated PFOPA compared to the aliphatic C8PA. We attributed the OPV degradation to moisture diffusion from the top aluminum electrode and we discuss that the lowering of the anode work function is the result of hydrolysis of the SAM buffer layer. Next, we demonstrated the dependence of molecular electronic properties on the functional group substitution and that the changes in these properties can be measured using the organic light-emitting (OLED) platform. Specifically, we compared bilayered organic monomolecular systems immobilized on an inorganic electrode as the charge-injecting components of the organic light emitting diodes (OLEDs). Our bilayered interfaces comprise ordered inert primary and functional reactive layers, and they differ in only one parameter: the molecular structure of the terminal functional group. We demonstrate that we can visualize the differences in the charge transfer dynamics of two bilayered systems via patterned electroluminescence. In addition, we describe a new protocol for the preparation of shape-controlled multicomponent particles comprising metallic (Au and Ti), magnetic (Ni), and oxide (SiO2, TiO2) layers. First, we discuss the application and attractiveness of the colloidal structures, Janus Particles (JPs), that possess two different surfaces, varying either in polarity, hydrophilicity, etc. Next, we present our method for specifically controlling the composition, shape, and size of the micro-JPs. We demonstrate how this protocol permits fabrication of non-symmetrical particles by orthogonally functionalizing their opposite sides using well-established organosilanes and thiol chemistries (based on SAMs). We propose that these colloids may be used as convenient materials for studying non-symmetrical self-assembly at the meso- and micro-scales, due to their unique geometries and surface chemistries"--Pages viii-x.
Author: Maddalena Pedio
Publisher:
ISBN:
Category : Science
Languages : en
Pages :
Get Book Here
Book Description
Self-assembled monolayers (SAMs) of organic-conjugated transition metal complexes on surfaces is a focus of both device engineering and basic science, since it is a key factor in nearly all important aspects of device performances, including operation voltages, degradation, and efficiency. The huge amount of literature results related to the first monolayer, and reorganization and self-assembling processes are due to the general accepted result that structural and chemical properties of the first monolayer are the key parameters for controlled thin film growth. Optical and magneto-electronic properties are intimately connected, and the accurate determination of electronic levels, excitation, and relaxation dynamics is mandatory for the optimization of electronic, photovoltaic, and opto-electronic devices. Quite a number of electronic states is generated by the interaction of light with complex organic molecules. Time-resolved spectroscopies are a new investigation tool that gives the possibility of correctly addressing their origin and life time. Examples of prototypical systems are presented and discussed. We review on complementary techniques, trying to single out how different approaches are fundamental to fully characterize these complex systems.
Author: Christina Ann Hacker
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
Get Book Here
Book Description
