scholarly journals Formation of Microcages from a Collagen Mimetic Peptide via Metal-Ligand Interactions

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4888
Author(s):  
Jeremy Gleaton ◽  
Ryan W. Curtis ◽  
Jean Chmielewski
Keyword(s):  
Metal Ions ◽  
Self Assembly ◽  
Thermal Conditions ◽  
Time Dependent ◽  
Mechanistic Studies ◽  
Mimetic Peptide ◽  
Hierarchical Assembly ◽  
Ligand Interactions ◽  
Triple Helices ◽  
Metal Ligand

Here, the hierarchical assembly of a collagen mimetic peptide (CMP) displaying four bipyridine moieties is described. The CMP was capable of forming triple helices followed by self-assembly into disks and domes. Treatment of these disks and domes with metal ions such as Fe(II), Cu(II), Zn(II), Co(II), and Ru(III) triggered the formation of microcages, and micron-sized cup-like structures. Mechanistic studies suggest that the formation of the microcages proceeds from the disks and domes in a metal-dependent fashion. Fluorescently-labeled dextrans were encapsulated within the cages and displayed a time-dependent release using thermal conditions.

Supramolecular polymers constructed by orthogonal self-assembly based on host–guest and metal–ligand interactions

2015 ◽  
Vol 44 (3) ◽  
pp. 815-832 ◽  
Author(s):  
Peifa Wei ◽  
Xuzhou Yan ◽  
Feihe Huang
Keyword(s):  
Self Assembly ◽  
Recent Progress ◽  
Metal Coordination ◽  
Supramolecular Polymers ◽  
Ligand Interactions ◽  
Metal Ligand

This review describes recent progress in the orthogonal construction of supramolecular polymers based on host–guest and metal coordination interactions.

A novel supramolecular system with multiple fluorescent states constructed by orthogonal self-assembly

2016 ◽  
Vol 7 (23) ◽  
pp. 3827-3831 ◽  
Author(s):  
Qingchen Dong ◽  
Wenshan Qu ◽  
Pi Wang ◽  
Wai-Yeung Wong
Keyword(s):  
Self Assembly ◽  
Supramolecular System ◽  
Ligand Interactions ◽  
Non Covalent Interactions ◽  
Covalent Interactions ◽  
Metal Ligand

A novel supramolecular fluorescent system was successfully constructed by orthogonal self-assembly of host–guest and metal–ligand interactions. By controlling the non-covalent interactions in different ways, the system exhibits diverse fluorescent switching phenomena.

A dual-responsive cross-linked supramolecular polymer network gel: hierarchical supramolecular self-assembly driven by pillararene-based molecular recognition and metal–ligand interactions

2018 ◽  
Vol 9 (11) ◽  
pp. 1293-1297 ◽  
Author(s):  
Li Shao ◽  
Jie Yang ◽  
Bin Hua
Keyword(s):  
Molecular Recognition ◽  
Self Assembly ◽  
Polymer Network ◽  
Supramolecular Polymers ◽  
Supramolecular Polymer ◽  
Dual Responsive ◽  
Ligand Interactions ◽  
Metal Ligand

A novel 2,2′-bipyridine-bridged pillar[5]arene dimer was synthesized and further applied for constructing linear supramolecular polymers and supramolecular polymer network gels.

Two-Dimensional Self-Assembly of a Porphyrin-Polypyridyl Ruthenium(II) Hybrid on HOPG Surface through Metal-Ligand Interactions

ChemPhysChem ◽  
2010 ◽  
pp. NA-NA ◽  
Author(s):  
Aimei Gao ◽  
Xinrui Miao ◽  
Jie Liu ◽  
Ping Zhao ◽  
Jinwang Huang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Two Dimensional ◽  
Ligand Interactions ◽  
Metal Ligand

scholarly journals Reversible self-assembly of gels through metal-ligand interactions

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Yuichiro Kobayashi ◽  
Yoshinori Takashima ◽  
Akihito Hashidzume ◽  
Hiroyasu Yamaguchi ◽  
Akira Harada
Keyword(s):  
Self Assembly ◽  
Ligand Interactions ◽  
Metal Ligand

A Generic Synthesis Route for Matrix Assisted Self-Assembly of Metal-Oxo Clusters in Organosilica Sol-Gels

2002 ◽  
Vol 726 ◽  
Author(s):  
Mukti S. Rao ◽  
Bakul C. Dave
Keyword(s):  
Metal Ions ◽  
Self Assembly ◽  
Metal Ion ◽  
Sol Gel ◽  
Modified Silica ◽  
Organically Modified ◽  
The Matrix ◽  
Ligand Interactions ◽  
Organically Modified Silica ◽  
Metal Oxo Clusters

AbstractThe use of an organically modified silica sol-gel matrix containing ligating groups that assist in the formation of metal-oxo clusters is described. The metal-ligand interactions can be tuned by change in external environment such that: a) under overload metal ion concentrations, the sol-gel matrix sequesters the metal ions to promote the growth of 4-7 nm size metal-oxo clusters within the porous structure of the matrix, b) a change in pH releases the metal ions from the bound metal-oxo clusters, thereby making the sol-gel matrix behave as ferritin analogues. These characteristics of the matrix assisted self-assembly of metal-oxo clusters are shown using UVVis, TEM, AES, and EDX data.

Giant Porphyrin Disks: Control of Their Self-Assembly at Liquid–Solid Interfaces through Metal–Ligand Interactions

2007 ◽  
Vol 13 (28) ◽  
pp. 7948-7956 ◽  
Author(s):  
Marga C. Lensen ◽  
Johannes A. A. W. Elemans ◽  
Sandra J. T. van Dingenen ◽  
Jan W. Gerritsen ◽  
Sylvia Speller ◽  
...  
Keyword(s):  
Self Assembly ◽  
Ligand Interactions ◽  
Metal Ligand

scholarly journals Metal Cation Triggered Peptide Hydrogels and Their Application in Food Freshness Monitoring and Dye Adsorption

Gels ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 85
Author(s):  
Anna Fortunato ◽  
Miriam Mba
Keyword(s):  
Metal Cation ◽  
Self Assembly ◽  
Dye Adsorption ◽  
Supramolecular Materials ◽  
Ligand Interactions ◽  
Food Freshness ◽  
New Applications ◽  
Peptide Hydrogels ◽  
Β Sheet ◽  
Metal Ligand

Metal-ligand interactions have emerged as an important tool to trigger and modulate self-assembly, and to tune the properties of the final supramolecular materials. Herein, we report the metal-cation induced self-assembly of a pyrene–peptide conjugate to form hydrogels. The peptide has been rationally designed to favor the formation of β-sheet 1D assemblies and metal coordination through the Glu side chains. We studied in detail the self-assembly process in the presence of H+, Li+, Na+, K+, Ca2+, Ni2+, Cu2+, Zn2+, Cd2+, Co2+, Fe3+, and Cr3+ and found that the morphology and mechanical properties of the hydrogels are ion-dependent. Moreover, thanks to the presence of the metal, new applications could be explored. Cu2+ metallogels could be used for amine sensing and meat freshness monitoring, while Zn2+ metallogels showed good selectivity for cationic dye adsorption and separation.

scholarly journals Self-Assembled Nanomaterials Based on Complementary Sn(IV) and Zn(II)-Porphyrins, and Their Photocatalytic Degradation for Rhodamine B Dye

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3598
Author(s):  
Nirmal K. Shee ◽  
Hee-Joon Kim
Keyword(s):  
Aqueous Solution ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Self Assembly ◽  
The Self ◽  
Assembly Process ◽  
Absorption Bands ◽  
Ligand Coordination ◽  
Rhodamine B Dye ◽  
Metal Ligand

A series of porphyrin triads (1–6), based on the reaction of trans-dihydroxo-[5,15-bis(3-pyridyl)-10,20-bis(phenyl)porphyrinato]tin(IV) (SnP) with six different phenoxy Zn(II)-porphyrins (ZnLn), was synthesized. The cooperative metal–ligand coordination of 3-pyridyl nitrogens in the SnP with the phenoxy Zn(II)-porphyrins, followed by the self-assembly process, leads to the formation of nanostructures. The red-shifts and remarkable broadening of the absorption bands in the UV–vis spectra for the triads in CHCl3 indicate that nanoaggregates may be produced in the self-assembly process of these triads. The emission intensities of the triads were also significantly reduced due to the aggregation. Microscopic analyses of the nanostructures of the triads reveal differences due to the different substituents on the axial Zn(II)-porphyrin moieties. All these nanomaterials exhibited efficient photocatalytic performances in the degradation of rhodamine B (RhB) dye under visible light irradiation, and the degradation efficiencies of RhB in aqueous solution were observed to be 72~95% within 4 h. In addition, the efficiency of the catalyst was not impaired, showing excellent recyclability even after being applied for the degradation of RhB in up to five cycles.

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