Optically Active Polymers
Title | Optically Active Polymers PDF eBook |
Author | E. Sélégny |
Publisher | Springer Science & Business Media |
Pages | 421 |
Release | 2012-12-06 |
Genre | Science |
ISBN | 9400993781 |
The first four volumes of the series on 'Charged and Reactive Polymers' have been devoted to polymers in solution (Voh. I and II) or in gel and membrane forms (Vols. III and IV). In correlation with charges, other physical or chemical properties of macro molecules have been considered. Understanding of charge and hydrophobic effects is equally important for synthetic and biopolymers or their systems. Optically Active Polymers are related to problems of the same class, since optical activity is an inherent property of both natural macromolecules as well as a great variety of polymers synthesized in the Jast twenty years. Optical activity is a physical spectral property of chiral matter caused by asymmetrical configurations, conformations and structures which have no plane and no center of symmetry and consequently have two mirror image enantiomeric forms of inverse optical rotation. The racemic mixture of chiral enantiomers is optically inactive. The most common form of optical activity was first measured at a constant wavelength by the angle of rotation of linearly polarized light. More recently the measurements have been extended to the entire range of visible and attainable ultraviolet regions where electronic transitions are observed, giving rise to the ORD technique (Optical Rotatory Dispersion). The Cotton effects appear in the region of optically active absorption bands; outside of these bands the plain curve spectrum is also dependent on all the electronic transitions of the chromophores.
Optically Active Polymers
Title | Optically Active Polymers PDF eBook |
Author | Pradip K. Dutta |
Publisher | Springer |
Pages | 64 |
Release | 2016-09-16 |
Genre | Technology & Engineering |
ISBN | 9811026068 |
This book presents a systematic study of the synthesis of optically active polymers, discussing in detail the syntheses of three different types of optically active polymers from helical polymers, dendronized polymers and other types of polymeric compounds. It also explains the syntheses of optically active azoaromatic and carbazole-containing azoaromatic polymers and copolymers; optically active benzodithiophene; and optically active porphyrin derivatives. The final chapter discusses different properties of optically active polymers such as nonlinear optical properties, chiroptical properties, vapochromic behaviour, absorption and emission properties, fabrication and photochromic properties. The intrinsic details of various properties of optically active polymers will offer a valuable resource for researchers and industry personnel actively engaged in application-oriented investigations.
Optically Active Polymers
Title | Optically Active Polymers PDF eBook |
Author | E. Sélégny |
Publisher | Springer Science & Business Media |
Pages | 436 |
Release | 1979-08-31 |
Genre | Gardening |
ISBN | 9789027709042 |
The first four volumes of the series on 'Charged and Reactive Polymers' have been devoted to polymers in solution (Voh. I and II) or in gel and membrane forms (Vols. III and IV). In correlation with charges, other physical or chemical properties of macro molecules have been considered. Understanding of charge and hydrophobic effects is equally important for synthetic and biopolymers or their systems. Optically Active Polymers are related to problems of the same class, since optical activity is an inherent property of both natural macromolecules as well as a great variety of polymers synthesized in the Jast twenty years. Optical activity is a physical spectral property of chiral matter caused by asymmetrical configurations, conformations and structures which have no plane and no center of symmetry and consequently have two mirror image enantiomeric forms of inverse optical rotation. The racemic mixture of chiral enantiomers is optically inactive. The most common form of optical activity was first measured at a constant wavelength by the angle of rotation of linearly polarized light. More recently the measurements have been extended to the entire range of visible and attainable ultraviolet regions where electronic transitions are observed, giving rise to the ORD technique (Optical Rotatory Dispersion). The Cotton effects appear in the region of optically active absorption bands; outside of these bands the plain curve spectrum is also dependent on all the electronic transitions of the chromophores.
Polymeric Chiral Catalyst Design and Chiral Polymer Synthesis
Title | Polymeric Chiral Catalyst Design and Chiral Polymer Synthesis PDF eBook |
Author | Shinichi Itsuno |
Publisher | John Wiley & Sons |
Pages | 674 |
Release | 2011-06-28 |
Genre | Technology & Engineering |
ISBN | 1118063953 |
This book reviews chiral polymer synthesis and its application to asymmetric catalysis. It features the design and use of polymer-immobilized catalysts and methods for their design and synthesis. Chapters cover peptide-catalyzed and enantioselective synthesis, optically-active polymers, and continuous flow processes. It collects recent advances in an important field of polymer and organic chemistry, with leading researchers explaining applications in academic and industry R & D.
Concise Polymeric Materials Encyclopedia
Title | Concise Polymeric Materials Encyclopedia PDF eBook |
Author | Joseph C. Salamone |
Publisher | CRC Press |
Pages | 1778 |
Release | 1998-08-28 |
Genre | Technology & Engineering |
ISBN | 9780849322266 |
Concise Polymeric Materials Encyclopedia culls the most used, widely applicable articles from the Polymeric Materials Encyclopedia - more than 1,100 - and presents them to you in a condensed, well-ordered format. Featuring contributions from more than 1,800 scientists from all over the world, the book discusses a vast array of subjects related to the: synthesis, properties, and applications of polymeric materials development of modern catalysts in preparing new or modified polymers modification of existing polymers by chemical and physical processes biologically oriented polymers This comprehensive, easy-to-use resource on modern polymeric materials serves as an invaluable addition to reference collections in the polymer field.
Molecular Optical Activity and the Chiral Discriminations
Title | Molecular Optical Activity and the Chiral Discriminations PDF eBook |
Author | Stephen F. Mason |
Publisher | Cambridge University Press |
Pages | 300 |
Release | 1982-10-14 |
Genre | Medical |
ISBN | 9780521247023 |
Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.
Electronic and Optical Properties of Conjugated Polymers
Title | Electronic and Optical Properties of Conjugated Polymers PDF eBook |
Author | William Barford |
Publisher | OUP Oxford |
Pages | 320 |
Release | 2013-04-04 |
Genre | Science |
ISBN | 0191501700 |
Conjugated polymers have important technological applications, including solar cells and light emitting devices. They are also active components in many important biological processes. In recent years there have been significant advances in our understanding of these systems, owing to both improved experimental measurements and the development of advanced computational techniques. The aim of this book is to describe and explain the electronic and optical properties of conjugated polymers. It focuses on the three key roles of electron-electron interactions, electron-nuclear coupling, and disorder in determining the character of the electronic states, and it relates these properties to experimental observations in real systems. A number of important optical and electronic processes in conjugated polymers are also described. The second edition has a more extended discussion of excitons in conjugated polymers. There is also a new chapter on the static and dynamical localization of excitons.