Download or read book Photophysics and Photochemistry of Conjugated Polymer Nanoparticles written by Scott N. Clafton and published by . This book was released on 2014 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles prepared by the reprecipitation of conjugated polymers are an exciting development in the field of biological imaging and fluorescence sensing. The colloidal stability of these hydrophobic polymers in aqueous suspension was found to originate from the surface charge density of ~15 mC/m2, which is in part attributed to negatively charged functional groups produced by polymer oxidation. The suitability of these nanoparticles in traditional conjugated polymer applications, such as polymer photovoltaics, was also investigated using femtosecond fluorescence upconversion and transient absorption spectroscopies. Polarisation resolved studies of energy transfer in highly compact nanoparticles and extended polymer conformations showed the nanoparticles exclusively undergo intermolecular energy transfer. These observations were supported by energy transfer simulations on polymer structures obtained from coarse-grained molecular dynamics simulations. Next, the recombination of polarons in composite rr-P3HT/PCBM nanoparticles, dominated by geminate recombination below 10 wt% PCBM, was demonstrated using a one dimensional diffusion model. This model also yielded the P3HT domain size of ~5 nm, which confirms these nanoparticles can serve as a model system for probing charge generation and recombination processes in device-like environments. Finally, the power dependent exciton decay in highly ordered nanowires yielded an exciton diffusion length of 11 ± 3 nm, which is toward the upper limit of diffusion lengths reported for annealed P3HT films. This data indicates the gentle solution based crystallisation of nanowires is a promising route for enhancing the performance of bulk heterojunction devices.

Download or read book Photochemistry and Photophysics of Polymeric Materials written by Norman S. Allen and published by John Wiley & Sons. This book was released on 2010-03-18 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the state of the technology, from fundamentals to new materials and applications Today's electronic devices, computers, solar cells, printing, imaging, copying, and recording technology, to name a few, all owe a debt to our growing understanding of the photophysics and photochemistry of polymeric materials. This book draws together, analyzes, and presents our current understanding of polymer photochemistry and photophysics. In addition to exploring materials, mechanisms, processes, and properties, the handbook also highlights the latest applications in the field and points to new developments on the horizon. Photochemistry and Photophysics of Polymer Materials is divided into seventeen chapters, including: Optical and luminescent properties and applications of metal complex-based polymers Photoinitiators for free radical polymerization reactions Photovoltaic polymer materials Photoimaging and lithographic processes in polymers Photostabilization of polymer materials Photodegradation processes in polymeric materials Each chapter, written by one or more leading experts and pioneers in the field, incorporates all the latest findings and developments as well as the authors' own personal insights and perspectives. References guide readers to the literature for further investigation of individual topics. Together, the contributions represent a series of major developments in the polymer world in which light and its energy have been put to valuable use. Not only does this reference capture our current state of knowledge, but it also provides the foundation for new research and the development of new materials and new applications.

Download or read book Investigation of Photophysical and Photochemical Processes in Conjugated Polymer Nanoparticles by Single Particle and Ensemble Spectroscopy written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigation of photophysical and photochemical processes in conjugated polymer nanoparticles by single particle and ensemble spectroscopy.

Download or read book Investigating the Photochemistry and Photophysics of Conjugated Polymers by Single Molecule Spectroscopy written by Dehong Hu and published by . This book was released on 1999 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymer Photophysics Photochemistry written by James Guillet and published by CUP Archive. This book was released on 1985 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to photochemistry and photophysics. Polymer structure and reactivity. Diffusion and permeability in polymers. Determination of scission and crosslinking in polymers. Photoprocesses in solid polymer matrices. Fluorescence. Excimers and exciplexes. Phosphorescence. Energy transfer and migration in polymers. Photochemistry of carbonyl-containing polymers. Photopolymerization. Photocyclization. Miscellaneous photoprocesses. Photo- and radiation chemistry of polymers.

Download or read book Optical Properties of Functional Polymers and Nano Engineering Applications written by Vaibhav Jain and published by CRC Press. This book was released on 2018-09-03 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text provides a basic introduction to the optical properties of polymers, as well as a systematic overview of the latest developments in their nano engineering applications—including L-GRIN lenses, 3D holographic displays, optical gene detection, and more. Covering an increasingly important class of materials relevant not only in academic research but also in industry, this book emphasizes the importance of nano engineering in improving the fundamental optical properties of the functional polymers, elaborating on high-level research while thoroughly explaining the underlying principles.

Download or read book Primary Photoexcitations in Conjugated Polymers written by Niyazi Serdar Sariciftci and published by World Scientific Publishing Company Incorporated. This book was released on 1997-01-01 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photochemistry and Photophysics in Polymers written by Norman S. Allen and published by Elsevier Science & Technology. This book was released on 1984 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photophysical and Photochemical Tools in Polymer Science written by Mitchell A. Winnik and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1980 the New York Academy of Sciences sponsored a three-day conference on luminescence in biological and synthetic macromolecules. After that meeting, Professor Frans DeSchryver and I began to discuss the possibility of organizing a different kind of meeting, with time for both informal and in-depth discussions, to examine certain aspects of the application of fluorescence and phosphorescence spectroscopy to polymers. Our ideas developed through discussions with many others, particularly Professor Lucien Monnerie. By 1983, when we submitted our proposal to NATO for an Advanced Study Institute, the area had grown enormous ly. It is interesting in retrospect to look back on the points which emerged from these discussions as the basis around which the scientific program would be organized and the speakers chosen. We decided early on to focus on applications of these methods to provide information about polymer molecules and polymer systems: The topics would all relate to the conformation and dynamics of macromolecules, or to the morphology of polymer-containing systems. Another important decision was to expand the scope of the ASI to include certain photochemical techniques, parti cular ly laser flash pho to lys is. These appl icat ions were at the time quite new, but full of promise as important sources of information about polymers.

Download or read book Photophysics of Polymers written by Charles E. Hoyle and published by . This book was released on 1987 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides scientists engaged in basic and applied polymer research with a clear understanding of the current status of polymer photophysics. Offers topics ranging from luminescence decay analysis of biologically important polymers to investigation of electronic energy relaxation in the synthesis of aromatic vinyl polymers using picosecond fluorescence spectroscopy. Provides discussions on energy migration in polymer films and solutions, as well as fluorescent conformational probes of polymers in solution, dye labeling techniques, kinetic spectroscopy, excitation migration, triplet antenna effect, and more.

Download or read book Conjugated Polymer Nanoparticles from Photoacoustic Imaging to Theranostics written by Felicitas Jansen and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conjugated Polymer Nanoparticles for Applications in Bioimaging written by Jaruphat Wongpanich and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photophysical Studies of Pi conjugated Oligomers and Polymers That Incorporate Inorganic MLCT Chromophores written by Keith Walters and published by . This book was released on 2019-05-31 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The photophysics and photochemistry of several molecular series incorporating inorganic MLCT chromophores within pi-conjugated oligomers and polymers is presented, including photothermal measurements to determine nonradiative decay rates. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Photophysical Studies of Pi-conjugated Oligomers and Polymers That Incorporate Inorganic MLCT Chromophores" by Keith A. Walters, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.

Download or read book Photophysics of Synthetic Polymers written by David Phillips and published by . This book was released on 1982 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigating the Photophysics of Fluorescent Conjugated Polymer Chemosensors in the Solid State written by Sherryllene Sandrena Pinnock and published by . This book was released on 2011 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photomodulation of Conjugated Polymer Nanoparticles Via Photochromic Dye Doping written by Christina Marie Davis and published by . This book was released on 2010 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms of Photophysical Processes and Photochemical Reactions in Polymers written by J. F. Rabek and published by John Wiley & Sons. This book was released on 1987 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades, photophysical and photochemical processes have become important in many branches of polymer chemistry. The author use s such advances to illustrate his systematic description of mechanisms for the most important photoreactions, and presents a review of the field.