The synthesis, potentiometric studies and photophysical properties of two new polyamine ligands (L1 and L2) possessing the dansyl chromophore were studied in aqueous 0.15 M NaCl. The compounds show the absorption and emissions bands characteristic of the dansylamide fluorophore and both present intramolecular excited state proton transfer at intermediate pH ranges. One of the ligands (L2) strongly coordinates Zn(II) leading to fluorescence quenching. A model compound (L3) of the dansyl moiety was also investigated. (c) 2006 Elsevier B.V. All rights reserved.
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Cited Reference Count: 44
Parola, A. Jorge Lima, Joao Carlos Pina, Fernando Pina, Joao de Melo, Joao Seixas Soriano, Conxa Garcia-Espana, Enrique Aucejo, Ricardo Alarcon, Javier
Seixas de Melo, Sergio/A-5388-2008; Pina, Fernando/C-8161-2011; Parola, A. Jorge/F-4048-2010; REQUIMTE, AL/H-9106-2013; Pina, Joao /H-9948-2013; Lima, Joao/F-3658-2010
Seixas de Melo, Sergio/0000-0001-9708-5079; Parola, A. Jorge/0000-0002-1333-9076; Lima, Joao/0000-0003-0528-1967
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