Synthesis Characterization and Third-Order Nonlinear Optical Study of Some Transition Metal and Boron Complexes

Abstract

This research thesis entitled “Synthesis, Characterization and Third-order Nonlinear Optical Study of Some Transition metal and Boron Complexes” deals with the detailed information on synthesis of five different series of transition metal and boron coordination complexes for third-order nonlinear optical (NLO) study. Third-order NLO properties of all the synthesized complexes were measured using the open aperture Z-scan technique. The thesis divided into seven chapters viz Chapter 1 gives an overview of the introduction and historical background of nonlinear optics, theoretical aspects of light-mater interaction in nonlinear regime and different NLO processes and NLO materials. Chapter 2 deals with the literature review on NLO study of transition metals and boron coordination complexes and also the scope and objectives of the present work. Chapter 3 describes the synthesis, characterization and third-order NLO studies of diimine (1,10-phenonthroline and 2,2‟-bypyridine) based Zn(II), Cd(II) and Hg(II) complexes with 1D dipolar NLOphores. Chapter 4 explains the ultrafast and nonresonant NLO characteristics of two metal complexes (N-(2-pyridyl)-N'-(salicylidene) hydrazine triphenylphosphine Co(II) ([CoLPPh3]), N-(2-pyridyl)-N'-(salicylidene)hydrazine triphenylphosphine Pd(I) ([PdLPPh3])), incorporated into PMMA film was studied using time-resolved differential optical Kerr gate (DOKG) and Z-scan experiments. The synthesis, characterization and the third-order NLO properties of three new Cu(I) complexes with two electron withdrawing ligands has been discussed in chapter 5. Chapter 6 describes, the formation of “push-pull” boron fluoride complexes derived from chalcones. The NLO results show that these complexes exhibiting „„effective‟‟ 2PA property. Chapter 7 deals synthesis and NLO property of substituted N,N'-pphenylenebis(salicylideneimine) ligands as well as their coordinatively saturated boron fluoride complexes. Chapter 8 provides the summary of the work presented in this thesis along with the conclusions.