NLOphoric Triphenylamine Derived Donor‐π‐Acceptor‐π‐Donor Based Colorants: Synthesis, Spectroscopic, Density Functional Theory and Z‐scan Studies,

Manish M. Raikwar, Elizabeth Mathew, Manu Varghese, Issac H. Joe, Sekar Nagaiyan Nethi

Pages: 931-945 | First Published: 28 January 2019

 

Three dyes (5a‐c) with D‐π‐A‐π‐D structural motif were synthesized and investigated for their photophysical and nonlinear optical behavior. The photophysical behavior of 5a‐c were affected by the polarity of the medium and hence showed solvatochromism. The linear and non‐linear optical properties of the dyes obtained using the spectroscopic and computational methods were affected by different N‐substituted secondary donors used and the polarity of the solvent. The magnitude of nonlinear absorption coefficient (β), the magnitude of nonlinear refraction (n₂) and third order nonlinear susceptibility (X⁽³⁾) for the dyes were estimated from the Z‐scan analysis.