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.
引用
收藏
页码:22 / 26
页数:5
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