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Author : Zhiyong Liang
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (394 download)
Download or read book Design, Synthesis and Characterization of Second Order Nonlinear Optical Polymers written by Zhiyong Liang and published by . This book was released on 1995 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Galina Todorova
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (489 download)
Download or read book Design, Synthesis and Characterization of Novel Second-order Nonlinear Optical Chromophores with Fused-ring Polyenes for Application in Polymeric Electro-optic Modulators written by Galina Todorova and published by . This book was released on 2000 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jinghong Chen
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (419 download)
Download or read book Design, Systhesis and Characterization of Second-order Nonlinear Optical Chromophores and Their Related Polymers written by Jinghong Chen and published by . This book was released on 1998 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (227 download)
Download or read book Design, Synthesis and Characterization of Novel Nonlinear Optical Materials written by and published by . This book was released on 1996 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research accomplished in this project consists of four tasks each dealing with a different class of nonlinear optical (NLO) materials. Task (I): Second-order nonlinear optical materials. We developed new chromophores and processing to produce electro-optic materials with enhanced optical transparency towards the visible (>=700 nm), increased chemical and thermal stability and stability of poled alignment for 1000 hours at 100 deg C. Several approaches showed promises and we accomplished a great deal. Also, we developed polyurethane cross-linking polymers to produce thermally stable poling alignment in both molecular-ionic type and neutral type second-order chromophores. In both cases stability up to 1000 hours at 100 deg C was achieved. In another approach, in collaboration with Professor Shea of University of California, Irvine, we have employed ormosils to produce stable poled alignments. Task (II): Third-order nonlinear optical materials. We synthesized a group of phosphoylides containing a polarizable P atom and investigated their X(3) behavior via femtosecond Kerr gate measurements. By using optically heterodyned and phase-tuned Kerr gate techniques, we obtained both the signs and the magnitudes of the real and the imaginary components of X(3).
Author : Dong Yu
Publisher :
ISBN 13 :
Total Pages : 470 pages
Book Rating : 4.:/5 (375 download)
Download or read book Synthesis and Characterization of High Performance Second-order Nonlinear Optical Polymers written by Dong Yu and published by . This book was released on 1997 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (227 download)
Download or read book Design, Synthesis and Characterization of Novel Nonlinear Optical Polymers written by and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal focus of the project is to develop new materials chemistry based on molecular level design and solid state chemistry. The goals have been to develop electroactive polymers with novel electronic, optical and nonlinear optical properties. Second and third order nonlinear optical materials have been developed based on conjugated macromolecules and asymmetric anharmonic molecular electronic dipolar oscillators. In this multidisciplinary research effort, starting from first principle, bulk self assembly processing techniques needed to control the molecular and supermolecular organizations of optical and electroactive molecules have been developed. They include spontaneous molecular organization of nonlinear optically active conjugated polymers such as polydiacetylenes with conjugating and hydrogen bonding side groups. A series of new soluble PDAs of the same class with further functionalization, elaborating on the already defined design principle have been developed. (MM).
Author : Rima Ghosn
Publisher :
ISBN 13 :
Total Pages : 336 pages
Book Rating : 4.:/5 (396 download)
Download or read book Design, Synthesis and Polymerization of Novel Second Order Nonlinear Optical Materials written by Rima Ghosn and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geoffrey A. Lindsay
Publisher :
ISBN 13 :
Total Pages : 564 pages
Book Rating : 4.3/5 (91 download)
Download or read book Polymers for Second-order Nonlinear Optics written by Geoffrey A. Lindsay and published by . This book was released on 1995 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the most recent developments in second-order nonlinear optical polymers. Covers the most important technologies necessary to achieve commercially viable devices based on special polymeric materials with second-order nonlinear optical properties. Discusses important molecular design considerations, how to process the polymers into films, the stability of the films, their optical properties, and prototype devices that can be made from these films.
Author : Yi Jin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (718 download)
Download or read book Molecular Design, Synthesis and Characterization of Polymeric Nonlinear Optical Materials written by Yi Jin and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tung-Sheng Cheng
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (392 download)
Download or read book Synthesis and Characterization of Polyimides Containing Nonlinear Optical Chromophores written by Tung-Sheng Cheng and published by . This book was released on 1998 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Chiang
Publisher :
ISBN 13 :
Total Pages : 590 pages
Book Rating : 4.:/5 (36 download)
Download or read book Synthesis and Characterization of Coordination Complexes and Polymers for Second Order Nonlinear Optics written by William Chiang and published by . This book was released on 1994 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (946 download)
Download or read book Novel Photorefractive and Electro-Optic Polymers-Rational Designs, Synthesis and Mechanism written by and published by . This book was released on 1998 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes our effort in the past three years on synthesis and characterization of novel photorefractive polymer system. Two major systems were developed, one of which combined the ionic transition metal complexes and a conjugated polymer backbone bearing NLO chromophores to manifest large photorefractive effect. Another is a molecular material containing oligothiophene and a nonlinear optical (NLO) chromophore. A large net optical gain (>200/cm) at a zero electric field was observed in the metal containing system. In the molecular system, a net optical gain of 83/cm and a diffraction efficiency of nearly 40% were obtained in a film made from this molecule under an applied field of 706 kv/cm. A fast response time of for the grating formation, 42 ms under 616 kv/cm, was observed.
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (227 download)
Download or read book Design Synthesis and Characterization of Novel Polydiacetylenes Using New Analytical Technique written by and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the project period significant progress were made in design, synthesis and analysis of a number of electroactive polymers. Polymers were assessed for their structural features, electronic and optical properties and their application in molecular electronic devices. Substantial progress during the project period has led to expansion of research activities into a number of different areas including conducting monolayers, 3rd order nonlinear optical polymers and newly designed materials with second and 3rd nonlinear optical properties.
Author : S. Marturunkakul
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Interpenetrating Polymer Network as a Stable Second Order Nonlinear Optical Material: Comparison with the Guest/Host Systems written by S. Marturunkakul and published by . This book was released on 1993 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric materials with second order nonlinear optical (NLO) properties are of much interest for applications such as waveguide electrooptic modulation and frequency doubling devices. These NLO properties are presented when the chromophores are aligned in a noncentrosymmetric manner. The alignment of NLO chromophores in the poled polymers must be sufficiently stable at temperatures above 100 deg C in order to use them in practical devices. Several approaches have been adopted to enhance the temporal stability of the poled polymers. Enhanced temporal stability of second order NLO properties in several poled polymer systems has been achieved by crosslinking reactions. The resulting crosslinked network has a higher glass transition temperature and a denser matrix which prevent the aligned NLO chromophores from relaxing to a random orientation. However, slow decay of second order NLO properties at elevated temperatures was still observed in the polymers. Furthermore, the general form of the relaxation curves for the crosslinking polymers do not appear to be distinctly different from those for the guest/host systems. We have selected an interpenetrating polymer network (IPN) containing aligned NLO chromophores to test these issues. An IPN is a structure in which two or more networks are physically combined. The IPN is known to be able to remarkably suppress the creep and flow phenomena in polymers. Permanent entanglement of the two polymer chains restrict their mobility which leads to a significantly more stable NLO material. In this paper, we report on the design, synthesis and characterization of an NLO active IPN ... Interpenetrating polymer network, Nonlinear optical polymer.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (946 download)
Download or read book Design, Methodology and Preparation of Novel Polymers for Nonlinear Optics written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: One-pot post-polymerization modification reactions such as azo-coupling and tricyanovinylation reactions were employed to synthesize a series of polymers containing different nonlinear optical (NLO) chromophoric as well as ionic functionalities. We have extended and established the versatility of our earlier reported post-modification strategy to incorporate various heteroaromatic chromophores as well as ionic functionalities in the polymers, at the final stage of synthesis. The correlation between different heteroaromatic chromophore structures and the NLO properties of the polymers was extensively studied, Polymers containing heteroaromatic chromophores exhibit improved temporal stability and enhanced NLO activity. Polymers with ionic chromophores were employed to fabricate NLO active ultra-thin films using electrostatic self-assembling (ESA) technique. Attempts were also made to synthesize second order NLO active polydiacetylene derivatives using post azo-coupling reaction.
Author : American Chemical Society. Division of Polymer Chemistry
Publisher :
ISBN 13 :
Total Pages : 1310 pages
Book Rating : 4.3/5 (91 download)
Download or read book Papers Presented at the ... Meeting written by American Chemical Society. Division of Polymer Chemistry and published by . This book was released on 1998 with total page 1310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (227 download)
Download or read book High Performance Nonlinear Optical Polymers --Design and Synthesis of Side-Chain Polyquinolines written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel class of second-order nonlinear optical (NLO) side-chain polymer: side-chain polyquinolines was developed. The synthetic approach includes the synthesis of chromophore precursor-containing bis(ketomethylene) monomers and bis(ortho-aminoketone) monomers, the polymerization of the two monomers, and post-tricyanovinylation to activate the side-chain chromophores of the poly- quinolines. The synthesized NLO side-chain polyquinolines possess high glass transition temperature, good thermal stability, and processibility. The testing results show that the NLO side-chain polyquinolines exhibit a large electro-optical coefficient (r33) value (up to 17 pm/V measured at 0.63 micrometer, and 9 pm/V at 0.83 micrometer), and temporal stability of dipole alignment at 100 deg C for more than 500 hours.
