Development and characterization of a novel metal ion binding-mediated drug delivery mechanism for biomedical applications

2021 ◽  
Author(s):  
Zhiling Zhang
Keyword(s):  
Drug Delivery ◽  
Metal Ion ◽  
Biomedical Applications ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Delivery Mechanism

Metal Ion Binding to Calixarenes: Pendent Arm Coordination Assisted by Self-Inclusion

1994 ◽  
Vol 47 (6) ◽  
pp. 1185 ◽  
Author(s):  
JM Harrowfield ◽  
M Mocerino ◽  
BW Skelton ◽  
CR Whitaker ◽  
AH White
Keyword(s):  
Structural Characterization ◽  
Metal Ion ◽  
Room Temperature ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Cone Conformation ◽  
X Ray ◽  
Partial Cone ◽  
Arm Coordination

The synthesis and room-temperature single-crystal X-ray structural characterization of 25,27- di(allyloxy)-5,17-di-t-butyl-26,28-dimethoxycalix[4]arene are recorded. Crystals are monoclinic, C2/c, a 29.089(5), b 10.742(2), c 26.218(8) Ǻ, β 110.09(2)°, Z = 8; the structure was refined to a residual of 0.065 for 4103 independent 'observed' [I > 3σ(I)] reflections. The flattened partial cone conformation of the molecule allows inclusion of one of the methoxy substituents in a way which could block inclusion of a metal ion capable of polyhapto aromatic coordination and which may therefore explain why solution n.m.r. measurements indicate that silver(I) binds to the pendent alkene groups.

Investigation of optical and electrochemical properties as well as metal ion sensitivities of different number of crown ether appended phthalocyanines

2013 ◽  
Vol 17 (08n09) ◽  
pp. 682-690 ◽  
Author(s):  
Sevinc Z. Topal ◽  
Devrim Atilla ◽  
Kadriye Ertekin ◽  
Jean B. Tommasino ◽  
Dominique Luneau ◽  
...  
Keyword(s):  
Crown Ether ◽  
Metal Ion ◽  
Fluorescence Emission ◽  
Emission Spectra ◽  
Zinc Phthalocyanine ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Binding Properties ◽  
Fluorescence Emission Spectra

We report herein, the synthesis, and spectral and electrochemical characterization of a series of phthalocyaninato zinc complexes where two biomedically potential structures; crown ether and phthalocyanine moities were gathered on the same molecule. The effect of number of crown ether moieties on metal ion binding properties, as well as proton sensitivity were investigated by using electronic absorption and fluorescence emission spectra. Spectral behaviors of the zinc phthalocyanine complexes fused with one crown ether; Zn [ Pc (15 C 5)( C 6 H 13)6] and four crown ether; Zn [ Pc (15 C 5)4] in presence of Na + and K + ions were investigated into detail because of host-guest interactions of subjective ions with crown ether moieties, and compared with the crown ether free phthalocyanine; Zn [ Pc ( C 6 H 13)8].

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