Nonlinear Optical Properties of Organic and Polymer Systems

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Nonlinear Optical Properties of Organic and Polymer Systems

Show simple item record Elizabeth, C V Dr. Sreekumar, K 2013-10-29T05:38:59Z 2013-10-29T05:38:59Z 2010-09-29
dc.description Department of Applied Chemistry, Cochin University of Science and Technology en_US
dc.description.abstract Present thesis has discussed the design and synthesis of polymers suitable for nonlinear optics. Most of the molecules that were studied have shown good nonlinear optical activity. The second order nonlinear optical activity of the polymers was measured experimentally by Kurtz and Perry powder technique. The thesis comprises of eight chapters.The theory of NLO phenomenon and a review about the various nonlinear optical polymers has been discussed in chapter 1. The review has provided a survey of NLO active polymeric materials with a general introduction, which included the principles and the origin of nonlinear optics, and has given emphasis to polymeric materials for nonlinear optics, including guest-host systems, side chain polymers, main chain polymers, crosslinked polymers, chiral polymers etc.Chapter 2 has discussed the stability of the metal incorporated tetrapyrrole molecules, porphyrin, chlorin and bacteriochlorin.Chapter 3 has provided the NLO properties of certain organic molecules by computational tools. The chapter is divided into four parts. The first part has described the nonlinear optical properties of chromophore (D-n-A) and bichromophore (D-n-A-A-n-D) systems, which were separated by methylene spacer, by making use of DPT and semiempirical calculations.Chapter 4: A series of polyurethanes was prepared from cardanol, a renewable resource and a waste of the cashew industry by previously designed bifunctional and multifunctional polymers using quantum theoretical approach.Chapter 5: A series of chiral polyurethanes with main chain bis azo diol groups in the polymer backbone was designed and NLO activity was predicted by ZlNDO/ CV methods.In Chapter 7, polyurethanes were first designed by computational methods and the NLO properties were predicted by correction vector method. The designed bifunctional and multifunctional polyurethanes were synthesized by varying the chiral-achiral diol compositions en_US
dc.description.sponsorship Cochin University of Science and Technology en_US
dc.language.iso en en_US
dc.publisher Cochin University of Science and Technology en_US
dc.subject Nonlinear optical en_US
dc.subject Nonlinear optical polymers en_US
dc.subject Spectroscopic properties en_US
dc.subject Guest-host systems en_US
dc.subject Main chain polymers en_US
dc.subject Organic and Polymer Systems en_US
dc.title Nonlinear Optical Properties of Organic and Polymer Systems en_US
dc.title.alternative Theoretical and Experimental Investigations en_US
dc.type Thesis en_US

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