TY - JOUR
T1 - The first substituted macrocyclic ligand Py2N4S2 containing four naphthylmethylene pendant-armed groups: Synthesis and photophysical properties
AU - García, Verónica
AU - Aldrey, A.
AU - Castro, Catherine S. de
AU - Bastida, Rufina
AU - Macías, Alejandro
AU - Lodeiro, C.
AU - Seixas de Melo, J. Sergio
AU - Núñez, Cristina
N1 - We are grateful to the Xunta de Galicia (Spain) for the project PGIDI10PXIB209028PR, IN845B-2010/057, and 10CSA383009PR (Biomedicine) for financial support. The authors thank the Scientific Association Proteomass (Portugal) for financial support. C.N. thanks Xunta de Galicia for their postdoctoral contract (I2C program). C.S.d.C. thanks the Fundacao para a Ciencia e a Tecnologia/FEDER (Portugal/EU) programme postdoctoral Contracts SFRH/BD/75134/2010.
PY - 2013/10
Y1 - 2013/10
N2 - The synthesis of a pendant donor emissive macrocyclic ligand Py 2N4S2 with up to four naphthylmethylene arms (L) has been achieved. Their derivative solid metal complexes (Co2 +, Ni2 +, Cu2 +, Zn2 +, Cd2 +, Hg 2 + and Ag+) have been isolated and characterized. The photophysical properties of the free ligand L and their complexation behaviour have been investigated in solution. In dichloromethane, the free ligand presents two emission bands which are related to the monomer naphthalene emission and a red-shifted band attributable to ground state dimers (interaction between two naphthalene chromophores), which was further validated from time-resolved data, with bi-exponential decay with absence of dynamic components. UV-Vis spectroscopy has revealed a 2:1 binding stoichiometry for Co2 +, Cu2 +, Zn2 +, Hg2 + and Ag+. © 2013 Elsevier B.V.
AB - The synthesis of a pendant donor emissive macrocyclic ligand Py 2N4S2 with up to four naphthylmethylene arms (L) has been achieved. Their derivative solid metal complexes (Co2 +, Ni2 +, Cu2 +, Zn2 +, Cd2 +, Hg 2 + and Ag+) have been isolated and characterized. The photophysical properties of the free ligand L and their complexation behaviour have been investigated in solution. In dichloromethane, the free ligand presents two emission bands which are related to the monomer naphthalene emission and a red-shifted band attributable to ground state dimers (interaction between two naphthalene chromophores), which was further validated from time-resolved data, with bi-exponential decay with absence of dynamic components. UV-Vis spectroscopy has revealed a 2:1 binding stoichiometry for Co2 +, Cu2 +, Zn2 +, Hg2 + and Ag+. © 2013 Elsevier B.V.
KW - Dinuclear complex
KW - Macrocycles
KW - Naphthalene
KW - Pendant-arms
KW - Sensor
KW - Stability constant
U2 - 10.1016/j.inoche.2013.07.019
DO - 10.1016/j.inoche.2013.07.019
M3 - Article
SN - 1387-7003
VL - 36
SP - 22
EP - 26
JO - Inorganic Chemistry Communications
JF - Inorganic Chemistry Communications
ER -