Disassembly of redox responsive poly(ferrocenylsilane) multilayers: The effect of blocking layers, supporting electrolyte and polyion molar mass

Song, Jing; Jańczewski, Dominik; Ma, Yujie; Hempenius, Mark A.; Xu, Jianwei; Vancso, Gyula J.

doi:10.1016/j.jcis.2013.05.008

Cited by 19 publications

(26 citation statements)

References 43 publications

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“…183 The driving force for this release of PFS was proposed to be electrostatic polyion binding and electrostatic repulsion. The kinetics and profile of the multilayer release were controlled by blocking layers, surface charge, and the type of supporting electrolyte solution.…”

Section: View Article Onlinementioning

confidence: 99%

Polyferrocenylsilanes: synthesis, properties, and applications

et al. 2016

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This in-depth review covers progress in the area of polyferrocenylsilanes (PFS), a well-established, readily accessible class of main chain organosilicon metallopolymer consisting of alternating ferrocene and organosilane units. Soluble, high molar mass samples of these materials were first prepared in the early 1990s by ring-opening polymerisation (ROP) of silicon-bridged [1]ferrocenophanes (sila[1]ferrocenophanes). Thermal, transition metal-catalysed, and also two different living anionic ROP methodologies have been developed: the latter permit access to controlled polymer architectures, such as monodisperse PFS homopolymers and block copolymers. Depending on the substituents, PFS homopolymers can be amorphous or crystalline, and soluble in organic solvents or aqueous media. PFS materials have attracted widespread attention as high refractive index materials, electroactuated redox-active gels, fibres, films, and nanoporous membranes, as precursors to nanostructured magnetic ceramics, and as etch resists to plasmas and other radiation. PFS block copolymers form phase-separated iron-rich, redox-active and preceramic nanodomains in the solid state with applications in nanolithography, nanotemplating, and nanocatalysis. In selective solvents functional micelles with core-shell structures are formed. Block copolymers with a crystallisable PFS core-forming block were the first to be found to undergo "living crystallisation-driven self-assembly" in solution, a controlled method of assembling block copolymers into 1D or 2D structures that resembles a living covalent polymerisation, but on a longer length scale of 10 nm-10 μm.

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Section: View Article Onlinementioning

confidence: 99%

Polyferrocenylsilanes: synthesis, properties, and applications

et al. 2016

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“…One is based on viologene as redox-active moiety, where the reduced state is zwitterionic [448][449][450]. The other one is based on ferrocene, where the oxidized state is zwitterionic [451,452]. Still, also for these systems, the "switching" between the ionic and zwitterionic states has been little studied.…”

Section: Responsive Polyzwitterionsmentioning

confidence: 99%

Structures and Synthesis of Zwitterionic Polymers

2014

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Abstract:The structures and synthesis of polyzwitterions ("polybetaines") are reviewed, emphasizing the literature of the past decade. Particular attention is given to the general challenges faced, and to successful strategies to obtain polymers with a true balance of permanent cationic and anionic groups, thus resulting in an overall zero charge. Also, the progress due to applying new methodologies from general polymer synthesis, such as controlled polymerization methods or the use of "click" chemical reactions is presented. Furthermore, the emerging topic of responsive ("smart") polyzwitterions is addressed. The considerations and critical discussions are illustrated by typical examples.

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“…This process was investigated using a 5-layered layer-by-layer (LBL) system of polyanionic ferrocene poly (74) with the poly(ferrocenylsilanes) poly(75) having a quaternary ammonium counterpart, and disassembly based on the repulsive forces due to formation of the polyzwitterionic structure was observed. At a potential of 0.4 V, the oxidation of ferrocene in poly (74) to ferrocenium succeeded and the LBL disassembled within 5 has observed by UV and CV measurements [113]. …”

Section: Switch In Polymer From Polyanionic To Polyzwitterionic Statementioning

confidence: 93%

Switchable Materials Containing Polyzwitterion Moieties

2015

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Abstract:In recent decades, the design and construction of smart materials capable of switching into a polyzwitterionic state by an external trigger have been intensively pursued. Polyzwitterionic states have unique antifouling and surface properties and external triggers, such as pH, light, ions, electric field and CO 2 , cause significant changes in materials with regard to overall charge, ionic strength and wettability. This survey highlights current progress in the irreversible as well as the reversible switching process involving polyzwitterionic moieties, which can, in turn, be applied to studying the interaction of various interfaces with biological species as protein, DNA, bacteria or platelets and also for advanced use.

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Disassembly of redox responsive poly(ferrocenylsilane) multilayers: The effect of blocking layers, supporting electrolyte and polyion molar mass

Cited by 19 publications

References 43 publications

Polyferrocenylsilanes: synthesis, properties, and applications

Polyferrocenylsilanes: synthesis, properties, and applications

Structures and Synthesis of Zwitterionic Polymers

Switchable Materials Containing Polyzwitterion Moieties

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