Self-Assembly of a Mixed-Ligand Metal-Coordination Polymeric Network of Cadmium(II) Croconate with 4,4‘-Bipyridine

2003 ◽  
Vol 42 (25) ◽  
pp. 8294-8299 ◽  
Author(s):  
Chih-Chieh Wang ◽  
Cheng-Han Yang ◽  
Shih-Min Tseng ◽  
Gene-Hsiang Lee ◽  
Yung-Ping Chiang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Mixed Ligand ◽  
Metal Coordination ◽  
Polymeric Network

scholarly journals Diverse protein assembly driven by metal and chelating amino acids with selectivity and tunability

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Minwoo Yang ◽  
Woon Ju Song
Keyword(s):  
Amino Acids ◽  
Self Assembly ◽  
Protein Structures ◽  
Functional Materials ◽  
Building Blocks ◽  
Unnatural Amino Acid ◽  
Metal Coordination ◽  
Specific Chemical ◽  
Natural Building ◽  
Kinetics Of

AbstractProteins are versatile natural building blocks with highly complex and multifunctional architectures, and self-assembled protein structures have been created by the introduction of covalent, noncovalent, or metal-coordination bonding. Here, we report the robust, selective, and reversible metal coordination properties of unnatural chelating amino acids as the sufficient and dominant driving force for diverse protein self-assembly. Bipyridine-alanine is genetically incorporated into a D3 homohexamer. Depending on the position of the unnatural amino acid, 1-directional, crystalline and noncrystalline 2-directional, combinatory, and hierarchical architectures are effectively created upon the addition of metal ions. The length and shape of the structures is tunable by altering conditions related to thermodynamics and kinetics of metal-coordination and subsequent reactions. The crystalline 1-directional and 2-directional biomaterials retain their native enzymatic activities with increased thermal stability, suggesting that introducing chelating ligands provides a specific chemical basis to synthesize diverse protein-based functional materials while retaining their native structures and functions.

scholarly journals Metal self-assembly mimosine peptides with enhanced antimicrobial activity: towards a new generation of multitasking chelating agents

2020 ◽  
Vol 49 (9) ◽  
pp. 2862-2879 ◽  
Author(s):  
Joanna Izabela Lachowicz ◽  
Gabriele Dalla Torre ◽  
Rosita Cappai ◽  
Enrico Randaccio ◽  
Valeria M. Nurchi ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Amino Acid ◽  
Self Assembly ◽  
Building Block ◽  
Chelating Agents ◽  
Metal Coordination ◽  
Protein Amino Acid ◽  
Coordination Ability ◽  
New Generation

Mimosine is a non-protein amino acid that can be used as a building block in peptides with metal coordination ability.

Self-assembly of a nonanuclear NiII cluster via atmospheric CO2 fixation: synthesis, structure, collision-induced dissociation mass spectrometry and magnetic property

2020 ◽  
Vol 49 (31) ◽  
pp. 10977-10982
Author(s):  
Xue-Fei Tian ◽  
Bao-Qian Ji ◽  
Lei Feng ◽  
Kai Sheng ◽  
Yan-Min Su ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Magnetic Property ◽  
Self Assembly ◽  
Co2 Fixation ◽  
Mixed Ligand ◽  
Atmospheric Co2 ◽  
Collision Induced Dissociation

The atmospheric CO2 was spontaneously fixed into a novel nonanuclear Ni(ii) cluster which has been easily and successfully constructed through a mixed-ligand approach.

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.

scholarly journals From a Well-Defined Organozinc Precursor to Diverse Luminescent Coordination Polymers Based on Zn(II)-Quinolinate Building Units Interconnected by Mixed Ligand Systems

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7402
Author(s):  
Katarzyna Sołtys-Brzostek ◽  
Kamil Sokołowski ◽  
Iwona Justyniak ◽  
Michał K. Leszczyński ◽  
Natalia Olejnik-Fehér ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Coordination Polymers ◽  
Self Assembly ◽  
Rational Design ◽  
Building Blocks ◽  
Mixed Ligand ◽  
Direct Reaction ◽  
Synthetic Strategy ◽  
Secondary Building Units ◽  
Additional Base

Introduction of photoactive building blocks into mixed-ligand coordination polymers appears to be a promising way to produce new advanced luminescent materials. However, rational design and self-assembly of the multi-component supramolecular systems is challenging from both a conceptual and synthetic perspective. Here, we report exploratory studies that investigate the potential of [Zn(q)2]2[tBuZn(OH)]2 complex (q = deprotonated 8-hydroxyquinoline) as an organozinc precursor as well as a mixed-ligand synthetic strategy for the preparation of new luminescent coordination polymers (CPs). As a result we present three new 2D mixed-ligand Zn(II)-quinolinate coordination polymers which are based on various zinc quinolinate secondary building units interconnected by two different organic linker types, i.e., deprotonated 4,4′-oxybisbenzoic acid (H2obc) as a flexible dicarboxylate linker and/or selected bipyridines (bipy). Remarkably, using the title organozinc precursors in a combination with H2obc and 4,4′-bipyridine, a novel molecular zinc quinolinate building unit, [Zn4(q)6(bipy)2(obc)2], was obtained which self-assembled into a chain-type hydrogen-bonded network. The application of the organometallic precursor allowed for its direct reaction with the selected ligands at ambient temperature, avoiding the use of both solvothermal conditions and additional base reagents. In turn, the reaction involving Zn(NO3)2, as a classical inorganic precursor, in a combination with H2obc and bipy led to a novel 1D coordination polymer [Zn2(q)2(NO3)2(bipy)]. While the presence of H2obc was essential for the formation of this coordination polymer, this ditopic linker was not incorporated into the isolated product, which indicates its templating behavior. The reported compounds were characterized by single-crystal and powder X-ray diffraction, elemental analysis as well as UV-Vis and photoluminescence spectroscopy.

scholarly journals Porphyrin-based metal coordination polymers with self-assembly pathway-dependent properties for photodynamic and photothermal therapy

2020 ◽  
Author(s):  
Yuyang Miao ◽  
Shibo Lv ◽  
Daoyuan Zheng ◽  
Yuhan Liu ◽  
Dapeng Liu ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Self Assembly ◽  
Photothermal Therapy ◽  
The Self ◽  
Metal Coordination ◽  
Great Promise ◽  
Assembly Process ◽  
Assembly Pathway ◽  
Metal Organic ◽  
Metal Coordination Polymers

Abstract Porphyrin-based metal coordination polymers (MCPs) have attracted numerous attention due to their great promise application in phototherapy including photodynamic therapy (PDT) and photothermal therapy (PTT). However, the detailed self-assembly process of porphyrin-based MCPs still remains poorly understood. This work provides a detailed study of the self-assembly process of MCPs constructed by Mn2+ and TCPP (TCPP: 4,4′,4′′,4′′′-(Porphine-5,10,15,20-tetrayl)tetrakis(benzoic acid)) in aqueous solution. Unlike traditional nucleation and growth mechanism, we discover that there is a metastable metal-organic intermediate which is kinetically favored in the self-assembly process. And the metastable metal-organic intermediate nanotape structures could convert into thermodynamically favored nanosheets through disassembling into monomers followed by reassembling process. Moreover, the two structurally different assemblies exhibit distinct photophysical performances. The intermediate Mn-TCPP aggregates show good light-induced singlet oxygen 1O2 generation for PDT while the thermodynamic favored stable Mn-TCPP aggregates exhibit good photothermal conversion ability as photothermal agents (PTAs). This study could facilitate controlling self-assembly pathway to fabricate complex MCPs with desirable applications.

scholarly journals Influence of metal coordination and light irradiation on hierarchical self-assembly processes

2019 ◽  
Vol 10 (3) ◽  
pp. 752-760 ◽  
Author(s):  
Kalathil K. Kartha ◽  
Naveen Kumar Allampally ◽  
Antiope T. Politi ◽  
Deepak D. Prabhu ◽  
Hayato Ouchi ◽  
...  
Keyword(s):  
Self Assembly ◽  
Experimental Results ◽  
Light Irradiation ◽  
Metal Coordination ◽  
The Impact

We unravel the impact of metal coordination and light irradiation on hierarchical self-assembly processes by combined theoretical and experimental results.

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