An insight into the gas-phase fragmentations of potential molecular sensors with porphyrin-chalcone structures

resumo

Porphyrin-chalcone derivatives with potential cation sensing ability have been studied by ESI-MS and multistage ESI-MS. The presence of conjugated C=C and C=O double bonds in the chalcone moiety is responsible for the formation of diagnostic fragment ions common to all the studied meta and para chalcones. The ortho isomers show different fragmentation patterns that can be explained by different electronic charge distributions. (C) 2015 Elsevier B.V. All rights reserved.

palavras-chave

TANDEM MASS-SPECTROMETRY; ELECTROSPRAY-IONIZATION; FLUORESCENT SENSORS; METAL-IONS; CADMIUM

categoria

Physics; Spectroscopy

autores

Ramos, CIV; Moura, NMM; Santos, SMF; Faustino, MA; Tome, JPC; Amado, FML; Neves, MGPMS

nossos autores

agradecimentos

The authors would like to thank Fundacao para a Ciencia e a Tecnologia (FCT, Portugal), the European Union, QREN, FEDER, COMPETE, for funding the Organic Chemistry Research Unit (QOPNA) (project PEst-C/QUI/UI0062/2013; FCOMP-01-0124-FEDER-037296). Catarina I.V. Ramos and Nuno M.M. Moura thanks FCT for their Post-Doc scholarships SFRH/BPD/85902/2012 and SFRH/BPD/84216/2012, respectively. Sergio M.F. Santos thanks FCT for the FCT Investigator starting grant IF/00973/2014.

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