SYNTHESIS AND NLO PROPERTIES OF NEW CHROMOPHORES BASED ON IMIDAZO[1,2-A]PYRIDINE

Abstract

The synthesis and some preliminary experimental results concerning nonlinear optical (NLO) properties of new chromophores based on imidazo[1,2-a]pyridine are presented. Chromophore molecules were embedded in PMMA matrix and second-order susceptibility χ⁽²⁾ was induced through dc-electric poling. The highest achieved value of the second-order susceptibility was equal to about 18.56 pm/V at 1064 nm laser wavelength. We have not observed a simple correlation between bulk second-order susceptibilities χ⁽²⁾ of measured samples and theoretically calculated molecular first-order hyperpolarizabilities β.

Keywords:

• Imidazolopyridine derivatives
• Nonlinear optics
• Organic chromophore

Notes

¹Only identified correlations, relevant for structure elucidation cited.