Photochromism Molecules And Systems
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Photochromism Molecules And Systems
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Author : Heinz Dürr
language : en
Publisher: Elsevier
Release Date : 2003-03-12
Photochromism Molecules And Systems written by Heinz Dürr and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-03-12 with Science categories.
Photochromism is simply defined as the light induced reversible change of colour. The field has developed rapidly during the past decade as a result of attempts to improve the established materials and to discover new devices for applications.As photochromism bridges molecular, supramolecular and solid state chemistry, as well as organic, inorganic and physical chemistry, such a treatment requires a multidisciplinary approach and a broad presentation. The first edition (1990) provided an enormous amount of new concepts and data, such as the presentation of main families based on the pericyclic reaction mechanism, the review of new families, some bimolecular photocycloadditions and some promising systems. This new edition provides an efficient entry into this flourishing field, with the core content retained from the original work to provide a basic introduction into the different subjects. *Second edition of a work first published in 1990, now revised due to constant development of research. *Including updated lists of references (1989-2001), offering immediate access to recent developments.*Providing great basic interest and high application potential bringing scientists together from chemistry, physics and engineering.
Photochromic Materials
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Author : He Tian
language : en
Publisher: John Wiley & Sons
Release Date : 2016-09-13
Photochromic Materials written by He Tian and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-13 with Technology & Engineering categories.
Summarizing all the latest trends and recent topics in one handy volume, this book covers everything needed for a solid understanding of photochromic materials. Following a general introduction to organic photochromic materials, the authors move on to discuss not only the underlying theory but also the properties of such materials. After a selection of pplications, they look at the latest achievements in traditional solution-phase applications, including photochromic-based molecular logic operations and memory, optically modulated supramolecular system and sensors, as well as light-tunable chemical reactions. The book then describes the hotspot areas of photo-switchable surfaces and nanomaterials, photochromic-based luminescence/electronic devices and bulk materials together with light-regulated biological and bio-chemical systems. The authors conclude with a focus on current industrial applications and the future outlook for these materials. Written with both senior researchers and entrants to the field in mind.
Proceedings Of The 4th International Symposium On Photochromism Photoswitchable Molecular Systems And Devices
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Author : International Symposium on Photochromism Photoswitchable Molecular Systems and Devices
language : en
Publisher:
Release Date : 2005
Proceedings Of The 4th International Symposium On Photochromism Photoswitchable Molecular Systems And Devices written by International Symposium on Photochromism Photoswitchable Molecular Systems and Devices and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Organic Photochromic And Thermochromic Compounds
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Author : John C. Crano
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-04-11
Organic Photochromic And Thermochromic Compounds written by John C. Crano and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-11 with Science categories.
This major treatise on photochromism involving organic molecules and derived systems offers a detailed examination of the synthesis and specific photochromic properties of the best-known photochromic and thermochromic compounds. It includes practical information and commercial applications for known photochromic families.
Organic Photochromic And Thermochromic Compounds
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Author : John C. Crano
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-04-11
Organic Photochromic And Thermochromic Compounds written by John C. Crano and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-11 with Science categories.
This major treatise on photochromism involving organic molecules and derived systems is a result of increased international interest in the field. Volume 1 offers a detailed examination of the synthesis and specific photochromic properties of the best-known photochromic and thermochromic compounds. It includes numerous physico-chemical methods by which photochromic substances can be studied as well as practical information and commercial applications for known photochromic families.
Applied Photochemistry
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Author : Giacomo Bergamini
language : en
Publisher: Springer
Release Date : 2016-07-28
Applied Photochemistry written by Giacomo Bergamini and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-28 with Science categories.
This monograph features what happens when light meets molecules. This edited volume contains contributions from an international array of contributors, and it is divided into sections representing a selection of carefully focussed and connected photochemistry topics: energy, technology, medicine, environmental sciences, and art. In each section one or more chapters illustrates relevant aspects of each field, such as artificial photosynthesis and solar energy conversion (energy), light emitting devices and photochromic dyes (technology), and photodynamic therapy and solar filters (medicine). Aimed at students of all levels and researchers active in photochemistry.
Molecular Photoswitches
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Author : Zbigniew L. Pianowski
language : en
Publisher: John Wiley & Sons
Release Date : 2022-06-01
Molecular Photoswitches written by Zbigniew L. Pianowski and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-01 with Science categories.
A comprehensive overview about the emerging field of photoswitches and their applications in materials science and biology Molecular Photoswitches guides the reader through the basic molecular structures of photochromic compounds and their applications in the area of photoresponsive materials as well as in the biological context. The initial chapters describe individual classes of molecular photoswitches, introducing their principles of photochromism, typical switching wavelengths, thermal stability of photoisomers and other key information, which is ordinarily spread in the literature. These classes comprise i.a. azobenzenes, diazocines, arylazoheterocycles, arylhydrazones, indigoids, photochromic imines, or acylhydrazones. The book also covers: Catalysis with molecular switches Applications in photochromic porous materials, liquid crystals, or nanoparticles Light-responsive molecular machines, logic devices, and molecular magnets Photomodulation of biological systems: photoswitchable biopolymers, lightmodulated antibiotics, cytotoxins, ion channel inhibitors, light-propelled artificial muscles, and computationally designed photochromic proteins This two-volume work is a valuable guide for researchers and non-experts working in the field of photochemistry, organic chemistry, catalysis, materials science, biology, and medicine.
Photochemical Processes In Organized Molecular Systems
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Author : K. Honda
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Photochemical Processes In Organized Molecular Systems written by K. Honda and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.
Photochemical processes form the basis of life. Energy transfer through photons also underlies a wide range of phenomena ranging from the motion of atoms and molecules to the assembly of systems of molecules, such as polymers, Langmuir-Blodgett films and even liquid crystals. Photochemical Processes in Organized Molecular Systems provides an overview of recent photochemical investigations of systems of molecules. The book is divided into four parts: the first two deal with current progress on the understanding of photoinduced chemical processes, the third and fourth chapter deal with the photochemistry of organized molecular systems including polymers, micelles and liquid crystals. This book should be studied by all who want to know more about this promising field of photochemical research, and about the fascinating processes that light can bring about.
Esipt Photochromism
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Author : Mikhail Knyazhanskiy
language : en
Publisher: Xlibris Corporation
Release Date : 2018-10-31
Esipt Photochromism written by Mikhail Knyazhanskiy and has been published by Xlibris Corporation this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-31 with Science categories.
The photochromic anils (Imines of o-hydroxy aldehydes) have been found in the beginning of the last century, and therefore the views of this phenomenon were developing, along with theory of the structure and reaction mechanism and the methods of their investigations. The description of this development has been given shortly in the chapter one. The structure of anils, their properties, and their modifications in dependence of the substituents, solvents, and temperature are described, and solvatochromism and thermochromism are discussed in chapter two, along with hypothesis about mechanisms of these phenomena, which have been presented and based. The photochromic process in anil molecules has been discussed in detail in chapter 3. It is examined by stages, beginning from the very fast ESIPT (primary step) via the structural transformations in the excited states, generation in consecutive order of the fluorescence state with Anomalous (large) Stokes Shift (ASS flu), the twisted TICT-like precursory structure, and the twisted “post TICT” “colored” form in the ground state. The reverse reaction goes via the ground state or the excited state of the colored structure and the ground state proton transfer reaction (GSIPT). The post-TICT hypothesis is based on experimental data and quantum-chemical calculations. The photochromism of the bimolecular structures on the base of anil molecule is discussed in chapter 4 with assumption of interactions of the molecular fragments in the ground and the excited states. A lot of the photochromic systems with the Intramolecular H-bond and ESIPT and without anil molecules (about twenty types of the structures) have been discussed on the base of phenomenological classification of the photochromic properties (chapter 5). The brief consideration of the possible applications, including utilization of the perspective nanostructures as switchers, has been conducted in chapter 6. The material of the book can be used by the researchers, instructors, lecturers, and the students of various levels who work in the area of the reversible photochemical reactions, including photochromism.
Photophysics And Photochemistry Of Conjugated Systems And Photochromic Molecules
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Author : Christian Wiebeler
language : de
Publisher:
Release Date : 2015
Photophysics And Photochemistry Of Conjugated Systems And Photochromic Molecules written by Christian Wiebeler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Wir untersuchen die photophysikalischen und photochemischen Eigenschaften einer Vielzahl von Molekülen, die experimentelle Anwendungen vorweisen. Für diesen Zweck verwenden wir modernste quantenchemische Rechnungen. Das erste angeschaute System sind konjugierte Polymere mit Fokus auf geladenen Molekülen und Ladungserzeugung. Dafür verwendeten wir zeitabhängige Dichtefunktionaltheorie, um die elektronischen und optischen Eigenschaften zu untersuchen und elektronische Übergänge zu analysieren. Graphenquantenpunkte werden als Beispiel für ein ausgedehntes zweidimensionales konjugiertes System untersucht. Wir benutzten in diesem Fall den nuklearen Ensemble-Ansatz zur Simulation des Absorptionsspektrums und zum Nachweis des Ausleihens von Intensität. Derivate des Perylens sind kleinere zweidimensionale konjugierte Systeme. Wir simulierten die vibronische Progression, die sich in den Absorptionsspektren dieser Derivate findet, mithilfe quantenchemischer Rechnungen, die dem quantenmechanischen Franck-Condon-Prinzip Rechnung tragen. Das Diarylethen CMTE wird zur Funktionalisierung von Mikrodisk-Resonatoren im Experiment verwendet. Dessen Eigenschaften untersuchten wir mit quantenchemischen Rechnungen. Die photochemische Reaktion wurde im Detail mit nichtadiabatischer ab initio Molekulardynamik angeschaut. Diarylethene werden in zwei Arten eingeteilt, die für Anwendungen von Interesse sind. Um den fundamentalen Unterschied in der photochemischen Reaktion dieser zwei Arten zu verstehen, untersuchten wir prototypische Moleküle unter Verwendung von nichtadiabatischer ab initio Molekulardynamik. Letztlich ist der ultraschnelle photophysikalische Prozess der Ladungstrennung in einem konjugierten Oligomer für die organische Photovoltaik von besonderem Interesse. Wir benutzten die zuvor genannte Art der Molekulardynamik, um diesen Vorgang im Detail zu modellieren. ; ger
