Synthesis, characterisation and thermal stability of 5-ferrocenylidene-(1, 3-dimethylbarbituric acid) and 5-ferrocenylidene-(1, 3-diethylthiobarbituric acid)
Purpose ? To discuss synthesis and evaluation of organo-metallic dyes as second-order nonlinear optical (SONLO) material. Design/methodology/approach ? New dyes have been synthesised via Knovoenagel reactions of ferrocene carboxyaldehyde and two active methylene compounds. Findings ? The ferrocenyl dyes prepared have shown bathochromic shift and thermal stability. Practical implications ? These compounds have UV-Vis bathochromic shift, enabling them to be used as SONLO materials as well as dyes. Originality/value ? The paper provides further information on the thermal studies of these types of molecules.
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