Supramolecular Polymerization and Gel Formation of Bis(Merocyanine) Dyes Driven by Dipolar Aggregation

Sheng Yao; Uwe Beginn; Tobias Gress; Marina Lysetska; Frank Würthner

doi:10.1021/ja0496367

Water-induced helical supramolecular polymerization and gel formation of an alkylene-tethered perylene bisimide dyad

Chemical Communications ◽

10.1039/c6cc08995j ◽

2017 ◽

Vol 53 (1) ◽

pp. 168-171 ◽

Cited By ~ 18

Author(s):

Xu Lin ◽

Hiroki Kurata ◽

Deepak D. Prabhu ◽

Mitsuaki Yamauchi ◽

Tomonori Ohba ◽

...

Keyword(s):

Aqueous Media ◽

Supramolecular Polymers ◽

Gel Formation ◽

Perylene Bisimide ◽

Supramolecular Polymerization ◽

Lyotropic Mesophases

Linking two perylene bisimide dyes through an alkylene tether enforces aggregation in aqueous media, affording helical supramolecular polymers that can form gel-like lyotropic mesophases.

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Porous Colloidal Hydrogels Formed by Coordination-Driven Self-Assembly of Charged Metal-Organic Polyhedra

10.26434/chemrxiv.13621220.v1 ◽

2021 ◽

Author(s):

Zaoming Wang ◽

Gavin Craig ◽

alexandre legrand ◽

Frederik Haase ◽

Saori Minami ◽

...

Keyword(s):

Self Assembly ◽

Soft Materials ◽

Building Blocks ◽

Internal Cavity ◽

Hydroxyl Groups ◽

Gel Formation ◽

Gas Sorption ◽

Coordination Cages ◽

Metal Organic ◽

Supramolecular Polymerization

Introduction of porosity into supramolecular gels endows soft materials with functionalities for molecular encapsulation, release, separation and conversion. Metal-organic polyhedra (MOPs), discrete coordination cages containing an internal cavity, have recently been employed as building blocks to construct polymeric gel networks with potential porosity. However, most of the materials can only be synthesized in organic solvents, and the examples of porous, MOP-based hydrogels are scarce. Here, we demonstrate the fabrication of porous hydrogels based on [Rh2(OH-bdc)2]12, a rhodium-based MOP containing hydroxyl groups on its periphery (OH-bdc = 5-hydroxy-1,3-benzenedicarboxylate). By simply deprotonating [Rh2(OH-bdc)2]12 with the base NaOH, the supramolecular polymerization between MOPs and organic linkers can be induced in the aqueous solution, leading to the kinetically controllable formation of hydrogels with hierarchical colloidal networks. When heating the deprotonated MOP, Nax[Rh24(O-bdc)x(OH-bdc)24-x], to induce gelation, the MOP was found to partially decompose, affecting the mechanical property of the resulting gels. By applying a post-synthetic deprotonation strategy, we show that the deprotonation degree of the MOP can be altered after the gel formation without serious decomposition of the MOPs. Gas sorption measurements confirmed the permanent porosity of the corresponding aerogels obtained from these MOP-based hydrogels, showing potentials for applications in gas sorption and catalysis.

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Controlling the supramolecular polymerization and metallogel formation of Pt(ii) complexes via delicate tuning of non-covalent interactions

Polymer Chemistry ◽

10.1039/c9py01299k ◽

2019 ◽

Vol 10 (40) ◽

pp. 5465-5472 ◽

Cited By ~ 4

Author(s):

Lihong Li ◽

Na Zhou ◽

Hao Kong ◽

Xiaoming He

Keyword(s):

Hydrogen Bonding ◽

Platinum Complexes ◽

Gel Formation ◽

Direct Influence ◽

Hydrogen Bonding Interactions ◽

Non Covalent Interactions ◽

Supramolecular Polymerization ◽

Covalent Interactions

Direct influence of noncovalent ionic and hydrogen bonding interactions on supramolecular polymerization mechanisms and their impact on gel formation of luminescent platinum complexes have been comprehensively investigated.

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Cooperative Supramolecular Polymerization: Comparison of Different Models Applied on the Self-Assembly of Bis(merocyanine) Dyes

Chemistry - A European Journal ◽

10.1002/chem.201202679 ◽

2012 ◽

Vol 19 (1) ◽

pp. 206-217 ◽

Cited By ~ 42

Author(s):

Gustavo Fernández ◽

Matthias Stolte ◽

Vladimir Stepanenko ◽

Frank Würthner

Keyword(s):

Self Assembly ◽

The Self ◽

Merocyanine Dyes ◽

Supramolecular Polymerization

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Porous Colloidal Hydrogels Formed by Coordination-Driven Self-Assembly of Charged Metal-Organic Polyhedra

10.26434/chemrxiv.13621220 ◽

2021 ◽

Author(s):

Zaoming Wang ◽

Gavin Craig ◽

alexandre legrand ◽

Frederik Haase ◽

Saori Minami ◽

...

Keyword(s):

Self Assembly ◽

Soft Materials ◽

Building Blocks ◽

Internal Cavity ◽

Hydroxyl Groups ◽

Gel Formation ◽

Gas Sorption ◽

Coordination Cages ◽

Metal Organic ◽

Supramolecular Polymerization

Introduction of porosity into supramolecular gels endows soft materials with functionalities for molecular encapsulation, release, separation and conversion. Metal-organic polyhedra (MOPs), discrete coordination cages containing an internal cavity, have recently been employed as building blocks to construct polymeric gel networks with potential porosity. However, most of the materials can only be synthesized in organic solvents, and the examples of porous, MOP-based hydrogels are scarce. Here, we demonstrate the fabrication of porous hydrogels based on [Rh2(OH-bdc)2]12, a rhodium-based MOP containing hydroxyl groups on its periphery (OH-bdc = 5-hydroxy-1,3-benzenedicarboxylate). By simply deprotonating [Rh2(OH-bdc)2]12 with the base NaOH, the supramolecular polymerization between MOPs and organic linkers can be induced in the aqueous solution, leading to the kinetically controllable formation of hydrogels with hierarchical colloidal networks. When heating the deprotonated MOP, Nax[Rh24(O-bdc)x(OH-bdc)24-x], to induce gelation, the MOP was found to partially decompose, affecting the mechanical property of the resulting gels. By applying a post-synthetic deprotonation strategy, we show that the deprotonation degree of the MOP can be altered after the gel formation without serious decomposition of the MOPs. Gas sorption measurements confirmed the permanent porosity of the corresponding aerogels obtained from these MOP-based hydrogels, showing potentials for applications in gas sorption and catalysis.

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Alkali silica reaction: effect of cracks on gel formation

ConcreteLife'06 - International RILEM-JCI Seminar on Concrete Durability and Service Life Planning: Curing, Crack Control, Performance in Harsh Environments ◽

10.1617/291214390x.013 ◽

2006 ◽

Author(s):

C.P. Ostertag

Keyword(s):

Alkali Silica Reaction ◽

Gel Formation

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Synthesis, photosensitization and antimicrobial activity evaluation of some novel Merocyanine dyes

10.31221/osf.io/yv273 ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Antimicrobial Activity ◽

Aspergillus Flavus ◽

Elemental Analysis ◽

Cyanine Dyes ◽

Fungal Strains ◽

Activity Evaluation ◽

Visible Spectra ◽

Merocyanine Dyes

Novel acyclic and cyclic merocyanine dyes derived from the nucleu of furo [(3,2-d) pyrazole; ( d 2 , 3 )imidazole]were prepared. The electronic visible absorptionspectra of all the synthesized new cyanine dyes were examined in 95% ethanolsolution to evaluate their photosensitization properties. Antibacterial andantifungal activities for some selected dyes were tested against various bacterialand fungal strains (Escherichia coli, Staphylococcus aureus, Aspergillus flavus andCandida albicans) to evaluate their antimicrobial activity. Structural identificationwas carried out via elemental analysis, visible spectra, IR and 1H NMRspectroscopic data.

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Preparation of graft copolymers by the reaction of polymeric acyl chlorides with monohydroxy-terminated polymers: An introductory study

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19881735 ◽

1988 ◽

Vol 53 (8) ◽

pp. 1735-1744 ◽

Cited By ~ 1

Author(s):

Jitka Horská ◽

Jaroslav Stejskal ◽

Pavel Kratochvíl ◽

Aubrey D. Jenkins ◽

Eugenia Tsartolia ◽

...

Keyword(s):

Light Scattering ◽

Chemical Composition ◽

Statistical Model ◽

Graft Copolymers ◽

Coupling Reaction ◽

Molecular Characteristics ◽

Gel Formation ◽

Acyl Chlorides ◽

Molecular Weights

An attempt was made to prepare well-defined graft copolymers by the coupling reaction between acyl chloride groups located along the backbone chain and monohydroxy-terminated grafts prepared separately. The molecular weights and the parameters of heterogeneity in chemical composition of the products were determined by light scattering and osmometry. The determination of molecular characteristics revealed that the degree of grafting was low. The results therefore could not be confronted with a statistical model at this stage. The problems encountered in the synthesis, e.g., gel formation, and the data relating to the soluble products are discussed.

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