The Synthesis and Properties of Conjugated Porphyrin Oligomers and Polymers PDF Download
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Author: Thomas E. O. Screen
Publisher:
ISBN:
Category : Porphyrins
Languages : en
Pages : 456
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Book Description
Author: Thomas E. O. Screen
Publisher:
ISBN:
Category : Porphyrins
Languages : en
Pages : 456
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Book Description
Author: Jonathan Cremers
Publisher: Springer Nature
ISBN: 3030391019
Category : Science
Languages : en
Pages : 294
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Book Description
This book cuts across the divisions of organic, inorganic, and physical chemistry. It describes new methods for creating π-conjugated porphyrin oligomers with precisely defined sequences of zinc and copper metal cations, and how EPR spectroscopy was used to investigate the dipolar and exchange coupling between the paramagnetic copper(II) centres. Porphyrins are a group of heterocyclic macrocycle organic compounds that play an important role in our everyday life and can for example be found in blood where they form a red complex with iron (haem). Various metallic elements can be inserted into a porphyrin and changing the coordinated metal is an excellent way to influence the chemical and physical properties of these molecules. Focusing on 3 metals - zinc, magnesium and copper - the author established new methods for creating π-conjugated porphyrin oligomers and lastly presents the synthesis and investigation of two novel porphyrin nanoballs. Giving the template-directed strategy the author developed for constructing these molecules, this work could provide access to other related nano-cages.
Author: Yoshiki Chujo
Publisher: John Wiley & Sons
ISBN: 3527632689
Category : Technology & Engineering
Languages : en
Pages : 333
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Book Description
Edited and authored by top international experts, this first book on conjugated polymers with a focus on synthesis provides a detailed overview of all modern synthetic methods for these highly interesting compounds. As such, it describes every important compound class, including polysilanes, organoboron compounds, and ferrocene-containing conjugated polymers. An indispensable source for every synthetic polymer chemist.
Author: Dandan Yao
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
During this thesis, we have worked on the synthesis and characterization of new compounds using the porphyrin macrocycle as a starting material. The aim, after synthesis, was to study the photophysical properties of these new molecules. More precisely, we have synthesized and characterized three groups of fluorenyl-porphyrin dendrimers and two oligomers in conjugated structures. Their correlation on optical property-structure have been discussed in detail, as well as the energy transfer processes from the conjugated dendron donor to porphyrin acceptor. In the first chapter, we introduce the general background of the porphyrin chemistry based on three aspects: (i) structure, (ii) optical properties and (iii) synthetic methods. We further review prior porphyrin studies done in our group and propose new molecular designs based on these results. In the second chapter, we study the influence of substitution position and nature of the antennae on the central core. Two groups of new TPP-cored porphyrin dendrimers were synthesized according to different substituted positions on the peripheral phenyl rings: para-substituted series TPP1, TPP2 and TPP3, and meta-substituted ones TPP4, TPP5 and TPP6. All have conjugated dendrons with bridged phenyl-alkynyl and are terminated by fluorenyl groups. In the third chapter, we study the influence of positions of light absorbers. To this aim, a series of TFP-cored porphyrin dendrimers presenting fluorenyls in conjugated dendrons on different positions is reported (core fluorenyl, bridging fluorenyl and terminal fluorenyl): TFP1, TFP2 and TFP3. The core fluorenyl mainly influences emission peaks and quantum yield, while the bridging fluorenyl and terminal fluorenyl have a large effect on the dendron absorption and on the energy transfer efficiency. Thus, for the largest dendrimer TFP3, dendron emission is not totally quenched by long distance energy transfer process when exciting the peripheral dendrons. In the fourth chapter, we study the influence of linkages in the Dendron. Thus, two new porphyrin dendrimers with bridged vinyl, TPP-D and TFP-D, were synthesized and compared to analogues with alkynyl bridged TPP-T and TFP-T. Vinyl and alkynyl bridges are shown to influence the optical properties of the porphyrin dendrimers to a certain extent depending on the substituted positions. Finally, in the last chapter, two oligomers with n-butyl substituted TFP as terminal group, a linear dimer and a star - shaped trimer, were synthesized from the same porphyrin monomer.
Author: Yan Xia
Publisher: John Wiley & Sons
ISBN: 3527349367
Category : Technology & Engineering
Languages : en
Pages : 420
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Book Description
Ladder Polymers An essential reference covering the latest research on ladder polymers Ladder polymers are a unique macromolecular architecture, consisting of a continuous strand of fused rings in their backbones. Such distinctive structures lead to a range of interesting thermal, optical, and electronic properties and self-assembly behaviors, which have been explored for various applications. The book Ladder Polymers: Synthesis, Properties, Applications, and Perspectives presents a collection of diverse topics in ladder polymers consisting of historical overview, state-of-the-art research and development, and potential future directions, written by leading researchers in the related fields. The topics include: Conjugated ladder polymers and graphene nanoribbons Nonconjugated microporous ladder polymers or polymers of intrinsic microporosity Covalent double-stranded polymers Supramolecular double-helical polymers and oligomers Two dimensional polymers This book is a one-stop resource on all the critical research developments in the subject of ladder polymers for broad readership including organic, polymer, and physical chemists, materials scientists and engineers, and chemical engineers.
Author: Adam R. Pristera
Publisher:
ISBN:
Category : Polymers
Languages : en
Pages : 94
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Book Description
Author: Aurélie Stallivieri
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Walter David Michael
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Book Description
Author: Terje A. Skotheim
Publisher: CRC Press
ISBN: 1420043595
Category : Technology & Engineering
Languages : en
Pages : 1030
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Book Description
Many significant fundamental concepts and practical applications have developed since the publication of the best-selling second edition of the Handbook of Conducting Polymers. Now divided into two books, the third edition continues to retain the excellent expertise of the editors and world-renowned contributors while providing superior coverage of
Author: Karl M Kadish
Publisher: World Scientific
ISBN: 9814518824
Category : Science
Languages : en
Pages : 2301
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Book Description
This is the seventh set of Handbook of Porphyrin Science.Porphyrins, phthalocyanines and their numerous analogue and derivatives are materials of tremendous importance in chemistry, materials science, physics, biology and medicine. They are the red color in blood (heme) and the green in leaves (chlorophyll); they are also excellent ligands that can coordinate with almost every metal in the Periodic Table. Grounded in natural systems, porphyrins are incredibly versatile and can be modified in many ways; each new modification yields derivatives, demonstrating new chemistry, physics and biology, with a vast array of medicinal and technical applications.As porphyrins are currently employed as platforms for study of theoretical principles and applications in a wide variety of fields, the Handbook of Porphyrin Science represents a timely ongoing series dealing in detail with the synthesis, chemistry, physicochemical and medical properties and applications of polypyrrole macrocycles. Professors Karl Kadish, Kevin Smith and Roger Guilard are internationally recognized experts in the research field of porphyrins, each having his own separate area of expertise in the field. Between them, they have published over 1500 peer-reviewed papers and edited more than three dozen books on diverse topics of porphyrins and phthalocyanines. In assembling the new volumes of this unique handbook, they have selected and attracted the very best scientists in each sub-discipline as contributing authors.This handbook will prove to be a modern authoritative treatise on the subject as it is a collection of up-to-date works by world-renowned experts in the field. Complete with hundreds of figures, tables and structural formulas, and thousands of literature citations, all researchers and graduate students in this field will find the Handbook of Porphyrin Science an essential, major reference source for many years to come.
