Synthesis, characterisation and thermal stability of 2‐ferrocenylidene (1‐tetralone), 2‐ferrocenylideneindan‐1,3‐dione, diferrocenylidenecyclohexanone and diferrocenylidenecyclopentanone

Abstract

Purpose

To discuss synthesis and evaluation of organo‐metallic chalcones as second‐order nonlinear optical (SONLO) materials.

Design/methodology/approach

The new chalcones have been synthesised via Knovoenagel reactions of ferrocen carboxaldehyde with two active methylene compounds.

Findings

The ferrocenyl chalcones prepared have shown bathochromic shift and thermal stability in polymeric film. On heating the dye films up to 80°C the extent of degradation reached up to 12 per cent and very small amount of degradation was observed at 43 and 60°C.

Originality/value

The paper shows that these compounds have UV‐Vis bathochromic shift, enabling them to be used as SONLO materials in the blue domain as well as dyes.

Citation

Baghaffar, G.A., Asiri, A.M., Babgi, B.M. and Al‐Amoudi, M.S. (2008), "Synthesis, characterisation and thermal stability of 2‐ferrocenylidene (1‐tetralone), 2‐ferrocenylideneindan‐1,3‐dione, diferrocenylidenecyclohexanone and diferrocenylidenecyclopentanone", Pigment & Resin Technology, Vol. 37 No. 2, pp. 87-92. https://doi.org/10.1108/03699420810860437