共 34 条
The first substituted macrocyclic ligand Py2N4S2 containing four naphthylmethylene pendant-armed groups: Synthesis and photophysical properties
被引:4
作者:
Garcia, Veronica
[1
]
Aldrey, Anxela
[1
]
De Castro, Catherine S.
[2
]
Bastida, Rufina
[1
]
Macias, Alejandro
[1
]
Lodeiro, Carlos
[3
]
Sergio Seixas de Melo, J.
[2
]
Nunez, Cristina
[3
,4
]
机构:
[1] Univ Santiago de Compostela, Dept Inorgan Chem, Fac Chem, Santiago De Compostela 15782, Spain
[2] Univ Coimbra, Dept Chem, P-3004535 Coimbra, Portugal
[3] Univ Nova Lisboa, BIOSCOPE Grp, REQUIMTE CQFC, Chem Dept,FCT UNL, P-2829516 Monte De Caparica, Portugal
[4] Canterbury Christ Church Univ, Ecol Res Grp, Dept Geog & Life Sci, Canterbury CT1 1QU, Kent, England
关键词:
Macrocycles;
Dinuclear complex;
Stability constant;
Naphthalene;
Pendant-arms;
Sensor;
METAL-ION BINDING;
LARIAT AZA-CROWN;
SCHIFF-BASES;
KINETIC-DATA;
DONOR ATOMS;
COMPLEXES;
CATIONS;
CHEMISTRY;
PYRIDINE;
ANIONS;
D O I:
10.1016/j.inoche.2013.07.019
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
The synthesis of a pendant donor emissive macrocyclic ligand Py2N4S2 with up to four naphthylmethylene arms (L) has been achieved. Their derivative solid metal complexes (Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+ 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+. (C) 2013 Elsevier B.V. All rights reserved.
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页码:22 / 26
页数:5
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