Morphology and orientation change of layer-by-layer deposited one- and two-dimensional coordination polymer nanocrystals containing rhodium paddle-wheel units

Steinbach, Daniel; Neubert, Richard; Gersdorf, Sophie; Schimpf, Christian; Erb, Denise; Rafaja, David; Plamper, Felix A.; Mertens, Florian

doi:10.1039/d3ce00721a

Cited by 2 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interfacial activity and micellization behavior of poloxamers is well studied. , Also we investigated the interfacial properties of polymers before. ,,, It is known that the adsorption behavior of poloxamers follows the concept of a hydrophilic–lipophilic balance (HLB). Hence, the water/air surface activity increases with higher amount of hydrophobic interactions .…”

Section: Resultsmentioning

confidence: 99%

Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert

Prasser,

Fuhs,

Torger

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Climate change requires enhanced autonomous temperature monitoring during logistics/transport. A cheap approach comprises the use of temperature-sensitive copolymers that undergo temperature-induced irreversible coagulation. The synthesis/characterization of pentablock copolymers (PBCP) starting from poloxamer PEO130-b-PPO44-b-PEO130 (poly(ethylene oxide)130-b-poly(propylene oxide)44-b-poly(ethylene oxide)130) and adding two terminal qPDMAEMA85 (quaternized poly[(2-dimethylamino)ethyl methacrylate]85) blocks is presented. Mixing of PBCP solutions with hexacyanoferrate(III)/ferricyanide solutions leads to a reduction of the decane/water interfacial tension accompanied by a co/self-assembly toward flower-like micelles in cold water because of the formation of an insoluble/hydrophobic qPDMAEMA/ferricyanide complex. In cold water, the PEO/PPO blocks provide colloidal stability over months. In hot water, the temperature-responsive PPO block is dehydrated, leading to a pronounced temperature dependence of the oil–water interfacial tension. In solution, the sticky PPO segments exposed at the micellar corona cause a colloidal clustering above a certain threshold temperature, which follows Smoluchowski-type kinetics. This coagulation remains for months even after cooling, indicating the presence of a kinetically trapped nonequilibrium state for at least one of the observed micellar structures. Therefore, the system memorizes a previous suffering of heat. This phenomenon is linked to an exchange of qPDMAEMA-blocks bridging the micellar cores after PPO-induced clustering. The addition of ferrous ions hampers the exchange, leading to the reversible coagulation of Prussian blue loaded micelles. Hence, the Fe2+ addition causes a shift from history monitoring to the sensing of the present temperature. Presumably, the system can be adapted for different temperatures in order to monitor transport and storage in a simple way. Hence, these polymeric “flowers” could contribute to preventing waste and sustaining the quality of goods (e.g., food) by temperature-induced bouquet formation, where an irreversible exchange of “tentacles” between the flowers stabilizes the bouquet at other temperatures as well.

show abstract

Section: Resultsmentioning

confidence: 99%

Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert

Prasser,

Fuhs,

Torger

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

Nucleation Behavior of SnS₂ on Thiol Functionalized SAMs During Solution‐Based Atomic Layer Deposition

Götz,

Prihoda,

Shen

et al. 2024

Adv Materials Inter

View full text Add to dashboard Cite

Solution‐based atomic layer deposition (sALD) is an emerging technique that transfers the principle of traditional atomic layer deposition (ALD) from the gas phase into a wet chemical environment. This new preparation technique has new and unique properties and requirements. A large number of new surfaces and reactants are available to produce active 2D materials.In this work a reproducible procedure to coat silicon wafers with a densely packed monolayer of (3‐Mercaptopropyl)trimethoxysilane (MPTMS) molecules is presented. These highly functionalized surfaces can be used to seed the nucleation of SnS2 in a solution‐based ALD procedure. A coating routine for the production of SnS2 is adapted from ALD to sALD and insight into the nucleation behavior of the reactands is given. X‐ray reflectometry (XRR) is used to resolve the nucleation process of SnS2 on an MPTMS self assembled monolayer (SAM) during the first three cycles of an sALD procedure. The comparison of ex situ XRR, in situ XRR, grazing incidence wide‐angle X‐ray scattering (GIWAXS), atomic force microscopy (AFM), energy dispersive X‐ray spectroscopy (EDX) measurements, and density functional theory (DFT) calculations find that SnS2 first forms a closed layer and then continues to grow in islands on thiol functionalized silane SAMs. Subsequent coating cycles will continue the growth of the islands laterally and in height.

show abstract

Morphology and orientation change of layer-by-layer deposited one- and two-dimensional coordination polymer nanocrystals containing rhodium paddle-wheel units

Abstract: Surface-directed and preferentially oriented assemblies of nanomaterials can enable enhanced applications in e.g. catalysis or sensing. Coordination polymers, which can be even conducting, could be suitable materials for this purpose...

Cited by 2 publications

References 57 publications

Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert

Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert

Nucleation Behavior of SnS₂ on Thiol Functionalized SAMs During Solution‐Based Atomic Layer Deposition

Contact Info

Product

Resources

About

Morphology and orientation change of layer-by-layer deposited one- and two-dimensional coordination polymer nanocrystals containing rhodium paddle-wheel units

Abstract: Surface-directed and preferentially oriented assemblies of nanomaterials can enable enhanced applications in e.g. catalysis or sensing. Coordination polymers, which can be even conducting, could be suitable materials for this purpose...

Cited by 2 publications

References 57 publications

Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert

Nonequilibrium Colloids: Temperature-Induced Bouquet Formation of Flower-like Micelles as a Time-Domain-Shifting Macromolecular Heat Alert

Nucleation Behavior of SnS2 on Thiol Functionalized SAMs During Solution‐Based Atomic Layer Deposition

Contact Info

Product

Resources

About

Nucleation Behavior of SnS₂ on Thiol Functionalized SAMs During Solution‐Based Atomic Layer Deposition