TY - JOUR
T1 - Fluorescent type II materials from naphthylmethyl polyamine precursors
AU - Alarcón, Javier
AU - Aucejo, Ricardo
AU - Albelda, M. Teresa
AU - Alves, Sérgio
AU - Clares, M. Paz
AU - García-España, Enrique
AU - Lodeiro, Carlos
AU - Marchin, Katherine L.
AU - Parola, A. Jorge
AU - Pina, Fernando
AU - Melo, J. Seixas de
AU - Soriano, Concepción
PY - 2004/12/1
Y1 - 2004/12/1
N2 - Speciation studies in aqueous solution on the interaction of Cu 2+ and Zn2+ with a series of polyaminic ligands N-naphthalen-1-ylmethyl-N′-{2-[(naphthalen-1-ylmethyl)-amino]-ethyl} -ethane-1,2-diamine (Ll), N-naphthalen-1-ylmethyl-N′-(2-{2-[(naphthalen-1- ylmethyl)-amino]-ethyl-amino}-ethyl)-ethane-1,2-diamine (L2) and N-naphthalen-1-ylmethyl-N′-[2-(2-{2-[(naphthalen-1-ylmethyl)-amino] -ethylamino}-ethylamino)-ethyl]-ethane-1,2-diamine (L3) containing two naphthylmethyl groups at their termini and N1-(2-{2-[(naphthalen-1- ylmethyl)-amino]-ethyl-amino}-ethyl)-ethane-1,2-diamine (L4) containing just one naphthylmethyl group have been carried out at 298.1 K in 0.15 mol dm -3 NaCl. In the case of the tetraamines L2 and L4, their coordination capabilities towards Cd2+, Ni2+, Co2+ and Pb2+ have also been considered. The stability constants follow the general Irving-Williams sequence. The steady-state fluorescence emission studies on the interaction with metal ions show that while Cu2+ produces a chelation enhancement of the quenching (CHEQ), the interaction with Zn 2+ leads to a chelation enhancement of the fluorescence (CHEF). Finally, ligands L1, L2 and L3 have been successfully covalently attached to silica surfaces and some preliminary results of their emissive properties are given.
AB - Speciation studies in aqueous solution on the interaction of Cu 2+ and Zn2+ with a series of polyaminic ligands N-naphthalen-1-ylmethyl-N′-{2-[(naphthalen-1-ylmethyl)-amino]-ethyl} -ethane-1,2-diamine (Ll), N-naphthalen-1-ylmethyl-N′-(2-{2-[(naphthalen-1- ylmethyl)-amino]-ethyl-amino}-ethyl)-ethane-1,2-diamine (L2) and N-naphthalen-1-ylmethyl-N′-[2-(2-{2-[(naphthalen-1-ylmethyl)-amino] -ethylamino}-ethylamino)-ethyl]-ethane-1,2-diamine (L3) containing two naphthylmethyl groups at their termini and N1-(2-{2-[(naphthalen-1- ylmethyl)-amino]-ethyl-amino}-ethyl)-ethane-1,2-diamine (L4) containing just one naphthylmethyl group have been carried out at 298.1 K in 0.15 mol dm -3 NaCl. In the case of the tetraamines L2 and L4, their coordination capabilities towards Cd2+, Ni2+, Co2+ and Pb2+ have also been considered. The stability constants follow the general Irving-Williams sequence. The steady-state fluorescence emission studies on the interaction with metal ions show that while Cu2+ produces a chelation enhancement of the quenching (CHEQ), the interaction with Zn 2+ leads to a chelation enhancement of the fluorescence (CHEF). Finally, ligands L1, L2 and L3 have been successfully covalently attached to silica surfaces and some preliminary results of their emissive properties are given.
UR - http://www.scopus.com/inward/record.url?scp=19944428157&partnerID=8YFLogxK
U2 - 10.1080/10610270412331317512
DO - 10.1080/10610270412331317512
M3 - Article
AN - SCOPUS:19944428157
SN - 1061-0278
VL - 16
SP - 573
EP - 580
JO - Supramolecular Chemistry
JF - Supramolecular Chemistry
IS - 8
ER -