Nanooptics and photonics

Synthesis of novel chromophores for application in nonlinear optics
Kharchenko O., Smokal V., Krupka O.
Department of Macromolecular Chemistry, 
Taras Shevchenko National University of Kyiv, 60 Volodymyrska St., Kyiv, Ukraine,01033
E-mail: oksana_kharchenko@ukr.net 

In previous years, much effort has been devoted to the synthesis of organic molecules having high second-order nonlinear optical (NLO) activity within the well-known scheme of push-pull chromophores. Obtaining an NLO material is based on the inclusion of NLO active molecules within a polymer matrix, an action that may be performed with or without covalent bonding (guest-host systems). In the former case, properly functionalized chromophore molecules may be dispersed in a system of low molar mass reagents, oriented and successively networked (sol-gel systems), or they may be included in a polymer chain as monomers with successive poling of the polymer [1]. 
Styrylquinoline derivatives have attracted a great interest for fundamental research and practical applications due to their photochemical and photophysical properties. In this work we report on the synthesis of novel chromophores based on styrylquinoline having the following formula.  

	
1.	Bruno V. et al. Second Harmonic Generation in Polymers Containing a New Azo Chromophore Based on Phenylnitrobenzoxazole // Journal of Polymer Science: Part A: Polymer Chemistry. – 2002. – Vol. 40. – 1468–1475