TY - JOUR
T1 - Bis(2-pyridylmethyl)alkyl(thioalkyl)diamines as promising scaffolds for the construction of fluorescent and redox chemosensors for transition and post-transition metal ions
AU - Montis, Riccardo
AU - Aragoni, M. Carla
AU - Arca, Massimiliano
AU - Bazzicalupi, Carla
AU - Blake, Alexander J.
AU - Caltagirone, Claudia
AU - De Filippo, Greta
AU - Garau, Alessandra
AU - Gratteri, Paola
AU - Isaia, Francesco
AU - Lippolis, Vito
AU - Pintus, Anna
PY - 2012/2/15
Y1 - 2012/2/15
N2 - N,N′-Bis(2-pyridylmethyl)propylendiamine (1) and N,N′-bis(2- pyridylmethyl)-1,5-diamino-3-thiapentane (2) have been functionalised at the secondary nitrogen atoms with dansylamidoethyl (L 1, L 3), 2-quinolinylmethyl (L 2, L 4) and ferrocenylmethyl (L 6, L 7) pendant arms with the intention to study their potentiality as receptor units in molecular sensors. The optical response of L 1-L 4 to the presence of the metal ions Cu 2+, Zn 2+, Cd 2+, Hg 2+ and Pb 2+ has been investigated in MeCN/H 2O (4:1 v/v) solution. The electrochemical response of L 6 and L 7 to the presence of the same metal ions has been investigated in anhydrous MeCN/CH 2Cl 2 10:1 (v/v) solution. Results are compared and discussed with the aim to clarify the mutual role played by the bis(2-methylpyridyl)alkyl(thioalkyl)diamines and the signalling units attached to them in reaching the selectivity of the responses observed.
AB - N,N′-Bis(2-pyridylmethyl)propylendiamine (1) and N,N′-bis(2- pyridylmethyl)-1,5-diamino-3-thiapentane (2) have been functionalised at the secondary nitrogen atoms with dansylamidoethyl (L 1, L 3), 2-quinolinylmethyl (L 2, L 4) and ferrocenylmethyl (L 6, L 7) pendant arms with the intention to study their potentiality as receptor units in molecular sensors. The optical response of L 1-L 4 to the presence of the metal ions Cu 2+, Zn 2+, Cd 2+, Hg 2+ and Pb 2+ has been investigated in MeCN/H 2O (4:1 v/v) solution. The electrochemical response of L 6 and L 7 to the presence of the same metal ions has been investigated in anhydrous MeCN/CH 2Cl 2 10:1 (v/v) solution. Results are compared and discussed with the aim to clarify the mutual role played by the bis(2-methylpyridyl)alkyl(thioalkyl)diamines and the signalling units attached to them in reaching the selectivity of the responses observed.
KW - Aminopyridine ligands
KW - Cadmium
KW - Dansyl
KW - Fluorescent chemosensors
KW - Quinoline
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=84857036213&partnerID=8YFLogxK
U2 - 10.1016/j.ica.2011.09.025
DO - 10.1016/j.ica.2011.09.025
M3 - Article
AN - SCOPUS:84857036213
VL - 381
SP - 170
EP - 180
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
SN - 0020-1693
IS - 1
ER -