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Doublet Emitters Derived From Stable Carbenes For Potential Oled Applications
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Book Synopsis Doublet Emitters Derived from Stable Carbenes for Potential OLED Applications by : Gabrielle Eden Harmon
Download or read book Doublet Emitters Derived from Stable Carbenes for Potential OLED Applications written by Gabrielle Eden Harmon and published by . This book was released on 2020 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic light emitting diodes (OLEDs) typically exhibit low quantum efficiencies (~ 19%) due to quantum mechanical limitations and spin statistics. In traditional OLEDs, the emitting excitons are either singlet (25%) or triplet (75%) spin states. Because decay from triplet states is spin forbidden, the internal quantum efficiency of fluorescent devices is limited to a theoretical maximum of 25%. To circumvent this problem, modern OLEDs rely on triplet, phosphorescent emitters, that require the incorporation of often expensive heavy atoms to facilitate intersystem crossing between the singlet and triplet excited states, thus increasing triplet emission. In contrast to the widely explored triplet emitters, this thesis will describe our recent efforts to prepare cationic and neutral doublet emitters derived from carbenes and triarylmethyl- or triarylboryl-centered radicals, respectively. In principle, doublet emitters have theoretical quantum efficiencies of up to 100%, making them ideal candidates for next-generation light-emitting devices. Carbenes will be incorporated into the triarylmethyl- and triaryl boryl- compounds in order to change the emission color as well as stabilize the radical.
Download or read book Diradicaloids written by Jishan Wu and published by CRC Press. This book was released on 2022-04-01 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: π-Conjugated molecules with an even number of π-electrons usually have a closed-shell ground state. However, recent studies have demonstrated that a certain type of molecules could show open-shell singlet ground state and display diradical-like (diradicaloid) behavior. Their electronic structure can be understood in terms of the “diradical character” and “aromaticity” concepts. They display very different electronic properties from traditional closed-shell π-conjugated molecules and could be used as next-generation molecular materials. This book provides a comprehensive review on the chemistry, physics, and material applications of open-shell singlet diradicaloids. Particularly, it elaborates the fundamental structure–diradical character–electronic property relationships both theoretically and experimentally. The book has been written by leading scientists in the field from Japan, Germany, Spain, Italy, China, and Singapore.
Book Synopsis Computational Photochemistry by : Massimo Olivucci
Download or read book Computational Photochemistry written by Massimo Olivucci and published by Elsevier. This book was released on 2005-10-20 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Photochemistry, Volume 16 provides an overview of general strategies currently used to investigate photochemical processes. Whilst contributing to establishing a branch of computational chemistry that deals with the properties and reactivity of photoexcited molecules, the book also provides insight into the conceptual and methodological research lines in computational photochemistry. Packed with examples of applications of modelling of basic photochemical reactions and the computer-aided development of novel materials in the field of photodegradation (paints), photoprotection (sunscreens), color regulation (photochromic devices) and fluorescent probes, this book is particularly useful to anyone interested in the effect of light on molecules and materials.* Provides an overview of computational photochemistry, dealing with principles and applications* Demonstrates techniques that can be used in the computer-aided design of novel photo responsive materials* Written by experts in computational photochemistry
Book Synopsis Highly Efficient OLEDs by : Hartmut Yersin
Download or read book Highly Efficient OLEDs written by Hartmut Yersin and published by John Wiley & Sons. This book was released on 2019-01-04 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieses Fachbuch eines Pioniers in diesem schnell wachsenden Fachbereich fasst die jüngsten Erkenntnisse zur Optimierung von OLEDs zusammen. Die Theorie wird ausführlich beschrieben, ebenso verschiedene organische und anorganische emittierende Materialien, Display- und Lichtanwendungen.
Book Synopsis The Organometallic Chemistry of the Transition Metals by : Robert H. Crabtree
Download or read book The Organometallic Chemistry of the Transition Metals written by Robert H. Crabtree and published by John Wiley & Sons. This book was released on 2005-06-14 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded to reflect recent advances, this Fourth Edition of the classic text provides students and professional chemists with an excellent introduction to the principles and general properties of organometallic compounds, as well as including practical information on reaction mechanisms and detailed descriptions of contemporary applications.
Book Synopsis Handbook of Photochemistry by : Marco Montalti
Download or read book Handbook of Photochemistry written by Marco Montalti and published by CRC Press. This book was released on 2006-02-21 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the second edition of this handbook in 1993, the field of photochemical sciences has continued to expand across several disciplines including organic, inorganic, physical, analytical, and biological chemistries, and, most recently, nanosciences. Emphasizing the important role light-induced processes play in all of these fie
Book Synopsis Optical Spectra of Phthalocyanines and Related Compounds by : Hiroaki Isago
Download or read book Optical Spectra of Phthalocyanines and Related Compounds written by Hiroaki Isago and published by Springer. This book was released on 2015-05-18 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book displays how optical (absorption, emission, and magnetic circular dichroism) spectra of phthalocyanines and related macrocyclic dyes can be varied from their prototypical ones depending on conditions. As these compounds can be involved in colorful chemistry (which might be driven by impurities in solvents), their spectra behave like the sea-god Proteus in their mutability. Therefore, those who have been engaged with phthalocyanines for the first time, including even educated professional researchers and engineers, may have been embarrassed by the deceptive behavior of their compounds and could have, in the worst cases, given up their projects. This book is aimed not merely at reviewing the optical spectra, but also at helping such people, particularly beginners, to figure them out by showing some examples of their prototypical spectra and their variations in several situations. For the purpose of better understanding, the book also provides an introduction to their theoretical backgrounds as graphically as possible and without mathematicization for readers who are weak in mathematics.
Book Synopsis Advanced Display Technology by : In Byeong Kang
Download or read book Advanced Display Technology written by In Byeong Kang and published by Springer Nature. This book was released on 2021-05-20 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and up-to-date guide to the AMOLED technologies and applications which have become industry standard in a range of devices, from small mobile displays to large televisions. Unlike other books on the topic, which cover the fundamentals, materials, processing, and manufacturing of OLEDs, this one-stop book discusses the core components, such as TFT backplanes, OLED materials and devices, and driving schematics together in one volume with chapters written by experts from leading international companies in the field of OLED materials and OLED TVs. It also examines emerging areas, such as micro-LEDs, displays using quantum dots, and AR & VR displays. Presenting the latest research trends as well as the basic principles of each topic, this book is intended for undergraduate and postgraduate students taking display-related courses, new researchers, and engineers in related fields.
Book Synopsis Activation of Small Molecules by : William B. Tolman
Download or read book Activation of Small Molecules written by William B. Tolman and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first to combine both the bioinorganic and the organometallic view, this handbook provides all the necessary knowledge in one convenient volume. Alongside a look at CO2 and N2 reduction, the authors discuss O2, NO and N2O binding and reduction, activation of H2 and the oxidation catalysis of O2. Edited by the highly renowned William Tolman, who has won several awards for his research in the field.
Book Synopsis The Organometallic Chemistry of N-heterocyclic Carbenes by : Han Vinh Huynh
Download or read book The Organometallic Chemistry of N-heterocyclic Carbenes written by Han Vinh Huynh and published by John Wiley & Sons. This book was released on 2017-02-03 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Organometallic Chemistry of N-heterocyclic Carbenes describes various aspects of N-heterocyclic Carbenes (NHCs) and their transition metal complexes at an entry level suitable for advanced undergraduate students and above. The book starts with a historical overview on the quest for carbenes and their complexes. Subsequently, unique properties, reactivities and nomenclature of the four classical NHCs derived from imidazoline, imidazole, benzimidazole and 1,2,4-triazole are elaborated. General and historically relevant synthetic aspects for NHCs, their precursors and complexes are then explained. The book continues with coverage on the preparation and characteristics of selected NHC complexes containing the most common metals in this area, i.e. Ni, Pd, Pt, Ag, Cu, Au, Ru, Rh and Ir. The book concludes with an overview and outlook on the development of various non-classical NHCs beyond the four classical types. Topics covered include: Stabilization, dimerization and decomposition of NHCs Stereoelectronic properties of NHCs and their evaluation Diversity of NHCs Isomers of NHC complexes and their identification NMR spectroscopic signatures of NHC complexes normal, abnormal and mesoionic NHCs The Organometallic Chemistry of N-heterocyclic Carbenes is an essential resource for all students and researchers interested in this increasingly important and popular field of research.
Book Synopsis Materials Chemistry by : Bradley D. Fahlman
Download or read book Materials Chemistry written by Bradley D. Fahlman and published by Springer. This book was released on 2018-08-28 with total page 817 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd edition of this successful textbook continues to build on the strengths that were recognized by a 2008 Textbook Excellence Award from the Text and Academic Authors Association (TAA). Materials Chemistry addresses inorganic-, organic-, and nano-based materials from a structure vs. property treatment, providing a suitable breadth and depth coverage of the rapidly evolving materials field — in a concise format. The 3rd edition offers significant updates throughout, with expanded sections on sustainability, energy storage, metal-organic frameworks, solid electrolytes, solvothermal/microwave syntheses, integrated circuits, and nanotoxicity. Most appropriate for Junior/Senior undergraduate students, as well as first-year graduate students in chemistry, physics, or engineering fields, Materials Chemistry may also serve as a valuable reference to industrial researchers. Each chapter concludes with a section that describes important materials applications, and an updated list of thought-provoking questions.
Book Synopsis Iridium(III) in Optoelectronic and Photonics Applications by : Eli Zysman-Colman
Download or read book Iridium(III) in Optoelectronic and Photonics Applications written by Eli Zysman-Colman and published by John Wiley & Sons. This book was released on 2017-03-07 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental photophysical properties of iridium(III) materials make this class of materials the pre-eminent transition metal complex for use in optoelectronic applications. Iridium(III) in Optoelectronic and Photonics Applications represents the definitive account of photoactive iridium complexes and their use across a wide variety of applications. This two-volume set begins with an overview of the synthesis of these complexes and discusses their photophysical properties. The text highlights not only mononuclear complexes but also the properties of multinuclear and polymeric iridium-based materials and the assembly of iridium complexes into larger supramolecular architectures such as MOFs and soft materials. Chapters devoted to the use of these iridium-based materials in diverse optoelectronic applications follow, including: electroluminescent devices such as organic light emitting diodes (OLEDs) and light-emitting electrochemical cells (LEECs); electrochemiluminescence (ECL); bioimaging; sensing; light harvesting in the context of solar cell applications; in photoredox catalysis and as components for solar fuels. Although primarily targeting a chemistry audience, the wide applicability of these compounds transcends traditional disciplines, making this text also of use to physicists, materials scientists or biologists who have interests in these areas.
Book Synopsis Organic Electroluminescence by : Zakya H. Kafafi
Download or read book Organic Electroluminescence written by Zakya H. Kafafi and published by CRC Press. This book was released on 2018-10-03 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic light-emitting diode(OLED) technology has achieved significant penetration in the commercial market for small, low-voltage and inexpensive displays. Present and future novel technologies based on OLEDs involve rigid and flexible flat panel displays, solid-state lighting, and lasers. Display applications may range from hand-held devices to large flat panel screens that can be rolled up or hung flat on a wall or a ceiling. Organic Electroluminescence gives an overview of the on-going research in the field of organic light-emitting materials and devices, covering the principles of electroluminescence in organic thin films, as well as recent trends, current applications, and future potential uses. The book begins by giving a background of organic electroluminescence in terms of history and basic principles. It offers details on the mechanism(s) of electroluminescence in thin organic films. It presentsin-depth discussions of the parameters that control the external electroluminescence quantum efficiency including the photoluminescence quantum yield, the light-output coupling factor, carrier/charge injection and transport, and electron and hole recombination processes in organic semiconductors. The authors address the design and the characterization of amorphous charge transport materials with high glass transition temperatures, light-emitting small molecules and conjugated polymers. The book covers state-of-the-art concepts and technologies such as fluorescent and phosphorescent OLEDs, various approaches for patterning organics, and active matrix organic emissive displays including their back panel thin film transistors and pixel electronics. It concludes by summarizing future directions for OLEDs in organic light-emitting displays, large area distributed solid state light sources, and lasers using organic thin films, nanostructures, and photonic crystals. Organic Electroluminescence is an excellent resource and reference for stu
Book Synopsis Sustainable Strategies in Organic Electronics by : Assunta Marrocchi
Download or read book Sustainable Strategies in Organic Electronics written by Assunta Marrocchi and published by Woodhead Publishing. This book was released on 2022-02-02 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Strategies in Organic Electronics reviews green materials and devices, sustainable processes in electronics, and the reuse, recycling and degradation of devices. Topics addressed include large-scale synthesis and fabrication of safe device materials processes that neither use toxic reagents, solvents or produce toxic by-products. Emerging opportunities such as new synthetic approaches for enabling the commercialization of pi-conjugated polymer-based devices are explored, along with new efforts towards incorporating materials from renewable resources for a low carbon footprint. Finally, the book discusses the latest advances towards device biodegradability and recycling. It is suitable for materials scientists and engineers, chemists, physicists in academia and industry. - Discusses emerging opportunities for green materials, synthesis and fabrication of organic electronics - Reviews the challenges of integration of sustainable strategies in large-scale manufacturing of organic electronics - Provides an overview of green materials and solvents that can be used as alternatives to toxic materials for organic electronics applications
Book Synopsis Visible Light Photocatalysis in Organic Chemistry by : Corey R.J. Stephenson
Download or read book Visible Light Photocatalysis in Organic Chemistry written by Corey R.J. Stephenson and published by John Wiley & Sons. This book was released on 2018-05-29 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the need for a ready reference that reflects the vast developments in this field, this book presents everything from fundamentals, applications, various reaction types, and technical applications. Edited by rising stars in the scientific community, the text focuses solely on visible light photocatalysis in the context of organic chemistry. This primarily entails photoinduced electron transfer and energy transfer chemistry sensitized by polypyridyl complexes, yet also includes the use of organic dyes and heterogeneous catalysts. A valuable resource to the synthetic organic community, polymer and medicinal chemists, as well as industry professionals.
Book Synopsis Highly Efficient OLEDs with Phosphorescent Materials by : Hartmut Yersin
Download or read book Highly Efficient OLEDs with Phosphorescent Materials written by Hartmut Yersin and published by John Wiley & Sons. This book was released on 2008-06-25 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph on organic light emitting diodes, edited by a pioneer, and written by front-line researchers from academia and industry, provides access to the latest findings in this rapidly growing field. More than ten contributions cover all areas -- from theory and basic principles, to different emitter materials and applications in production.
Book Synopsis Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes (TADF-OLEDs) by : Lian Duan
Download or read book Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes (TADF-OLEDs) written by Lian Duan and published by Woodhead Publishing. This book was released on 2021-10-15 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes (TADF-OLEDs) comprehensively introduces the history of TADF, along with a review of fundamental concepts. Then, TADF emitters with different colors, such as blue, green, red and NIR as well as white OLEDs are discussed in detail. Other sections cover exciplex-type TADF materials, emerging application of TADF emitters as a host in OLEDs, and applications of TADF materials in organic lasers and biosensing. - Discusses green, blue, red, NIR and white TADF emitters and their design strategies for improved performance for light-emitting diode applications - Addresses emerging materials, such as molecular and exciplex-based TADF materials - Includes emerging applications like lasers and biosensors
