# Oxygen bridged nitroanilines for quadratic nonlinear optics

Sudharsanam, Ramanathan and Chandrasekaran, Srinivasan and Das, PuspenduKumar (2003) Oxygen bridged nitroanilines for quadratic nonlinear optics. In: Journal of Molecular Structure, 645 (1). pp. 51-59.

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## Abstract

Several nitro aromatic compounds bridged by an oxygen atom have been synthesized and their linear and nonlinear optical properties have been investigated. In one of the compounds (1), a powder SHG efficiency of 6.2 times of urea was observed while its absorption lies in the UV region. The highest molecular hyperpolarizability $\beta$, measured was $230\times10^{-30}$ for a compound (8f) with increased conjugation. Thermal stability of these compounds has been checked using differential scanning calorimetry and the decomposition temperature $(T_d)$ was found to be high and lying between $266-298^o\hspace{1mm}C$. These molecules have potential importance as thermally stable, visible-transparent second order NLO materials.

Item Type: Journal Article Copyright of this article belongs to Elsevier. Nitro aromatic compounds;Azo compounds;Ether linkage; Nonlinear Optics;Second harmonic generation Division of Chemical Sciences > Organic Chemistry 02 Jun 2006 19 Sep 2010 04:28 http://eprints.iisc.ernet.in/id/eprint/7339