Forensic Sci Int. 2005 Sep 10;152(2-3):215-9.

Mass spectra and time-resolved fluorescence spectroscopy of the reaction product of glycine with 1,2-indanedione in methanol.

Alaoui IM, Menzel ER, Farag M, Cheng KH, Murdock RH.

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Physics Department, Faculty of Sciences Semlalia, BP 2390, Marrakech 40000, Morocco. mekkaoui@ucam.ac.ma

Abstract

The reaction products of 1,2-indanedione (a new fluorescent fingerprint reagent) with glycine in methanol, at room temperature have been studied using excitation and emission and time-resolved fluorescence spectroscopy. Gas chromatography-mass spectroscopy (GC/MS) has also been used to determine which compounds are formed. Reaction products were identified using GC/MS as 2-carboxymethyliminoindanone (MW=203 g) and 1,2-di(carboxymethylimino)indane (MW=260 g). Identified compounds show room temperature fluorescence lifetimes of tau(1)=7.69 ns and tau(2)=1.27 ns. It is not clear yet which compound is having fluorescence lifetime of 7.69 ns and which one is showing 1.27 ns.

PMID:: 15978348; [PubMed - indexed for MEDLINE]

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