Robust Thick Polymer Brushes Grafted from Gold Surfaces Using Bidentate Thiol-Based Atom-Transfer Radical Polymerization Initiators

Park, Chul Soon; Lee, Han Ju; Jamison, Andrew C.; Lee, T. Randall

doi:10.1021/acsami.5b11305

Cited by 31 publications

(38 citation statements)

References 37 publications

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“…On the other hand, the stability and durability of polymer brushes grown from various substrates have been shown to depend on the number of bonds between the initiator and the solid substrate [263]. Therefore, gold substrates have been used to produce well-defined and homogenous polymer brushes to achieve interface for molecular recognition [263,264].…”

Section: Properties and Applications Of Hybrid Films Based On Polymer Brushesmentioning

confidence: 99%

Recent Advances in Hybrid Biomimetic Polymer-Based Films: from Assembly to Applications

et al. 2020

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Biological membranes, in addition to being a cell boundary, can host a variety of proteins that are involved in different biological functions, including selective nutrient transport, signal transduction, inter- and intra-cellular communication, and cell-cell recognition. Due to their extreme complexity, there has been an increasing interest in developing model membrane systems of controlled properties based on combinations of polymers and different biomacromolecules, i.e., polymer-based hybrid films. In this review, we have highlighted recent advances in the development and applications of hybrid biomimetic planar systems based on different polymeric species. We have focused in particular on hybrid films based on (i) polyelectrolytes, (ii) polymer brushes, as well as (iii) tethers and cushions formed from synthetic polymers, and (iv) block copolymers and their combinations with biomacromolecules, such as lipids, proteins, enzymes, biopolymers, and chosen nanoparticles. In this respect, multiple approaches to the synthesis, characterization, and processing of such hybrid films have been presented. The review has further exemplified their bioengineering, biomedical, and environmental applications, in dependence on the composition and properties of the respective hybrids. We believed that this comprehensive review would be of interest to both the specialists in the field of biomimicry as well as persons entering the field.

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Section: Properties and Applications Of Hybrid Films Based On Polymer Brushesmentioning

confidence: 99%

Recent Advances in Hybrid Biomimetic Polymer-Based Films: from Assembly to Applications

et al. 2020

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“…It was worth mentioning that adopting the process of ATRP for the polymerization of AuNPs was advantageous as the process would synthesize polymers with desirable structure, molecular weight, and molecular weight distribution . For example, Park et al successfully synthesized a series of thiol‐based adsorbates, 16‐mercaptohexadecyl 2‐bromo‐2‐methylpropanoate (MBM), 16‐(3‐(mercaptomethyl)phenoxy)hexadecyl 2‐bromo‐2‐methyl‐propanoate (MTBM), or octadecanethiol (C18SH) as ATRP initiators, which were used to prepare radical initiator monolayers on AuNP surface for growing poly(methyl methacrylate) (PMMA) or polystyrene (PS) polymer brushes, exhibiting superior thermal stability . Furthermore, according to previous reports, the graft density of polymer brushes prepared by ATRP majorly focused on about 0.2–0.4 chains nm −2 although the full coverage of initiator on Au surfaces could reach up to 4 molecules nm −2 .…”

Section: Approaches To the Synthesis Of Polymer–aunp Hybridsmentioning

confidence: 99%

Recent Progress in Macromolecule‐Anchored Hybrid Gold Nanomaterials for Biomedical Applications

Luo

et al. 2018

Macromol. Rapid Commun.

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Gold nanoparticles (AuNPs), with elegant thermal, optical, or chemical properties due to quantum size effects, may serve as unique species for therapeutic or diagnostic applications. It is worth mentioning that their small size also results in high surface activity, leading to significantly impaired stability, which greatly hinders their biomedical utilizations. To overcome this problem, various types of macromolecular materials are utilized to anchor AuNPs so as to achieve advanced synergistic effect by dispersing, protecting, and stabilizing the AuNPs in polymeric-Au hybrid self-assemblies. In this review, the most recent development of polymer-AuNP hybrid systems, including AuNPs@polymeric nanoparticles, AuNPs@polymeric micelle, AuNPs@polymeric film, and AuNPs@polymeric hydrogel are discussed with respect to their different synthetic strategies. These sophisticated materials with diverse functions, oriented toward biomedical applications, are further summarized into several active domains in the areas of drug delivery, gene delivery, photothermal therapy, antibacterials, bioimaging, etc. Finally, the possible approaches for future design of multifunctional polymer-AuNP hybrids by combining hybrid chemistry with biological interface science are proposed.

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“…In contrast to many current approaches, we aimed to separate these additional anchoring points from the conductive backbone of the molecule and avoid sp 3 ‐hybridisation in the conductive pathway. We note that while this study focuses on the molecular electronics applications of our new anchoring motif, it may also prove adaptable as a useful scaffold for other applications, for example, gold surface‐assemblies of optoelectronic materials, switches or polymerisation initiators …”

Section: Introductionmentioning

confidence: 99%

Carbazole‐Based Tetrapodal Anchor Groups for Gold Surfaces: Synthesis and Conductance Properties

et al. 2019

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As the field of molecular‐scale electronics matures and the prospect of devices incorporating molecular wires becomes more feasible, it is necessary to progress from the simple anchor groups used in fundamental conductance studies to more elaborate anchors designed with device stability in mind. This study presents a series of oligo(phenylene‐ethynylene) wires with one tetrapodal anchor and a phenyl or pyridyl head group. The new anchors are designed to bind strongly to gold surfaces without disrupting the conductance pathway of the wires. Conductive probe atomic force microscopy (cAFM) was used to determine the conductance of self‐assembled monolayers (SAMs) of the wires in Au–SAM–Pt and Au–SAM–graphene junctions, from which the conductance per molecule was derived. For tolane‐type wires, mean conductances per molecule of up to 10−4.37 G0 (Pt) and 10−3.78 G0 (graphene) were measured, despite limited electronic coupling to the Au electrode, demonstrating the potential of this approach. Computational studies of the surface binding geometry and transport properties rationalise and support the experimental results.

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Robust Thick Polymer Brushes Grafted from Gold Surfaces Using Bidentate Thiol-Based Atom-Transfer Radical Polymerization Initiators

Cited by 31 publications

References 37 publications

Recent Advances in Hybrid Biomimetic Polymer-Based Films: from Assembly to Applications

Recent Advances in Hybrid Biomimetic Polymer-Based Films: from Assembly to Applications

Recent Progress in Macromolecule‐Anchored Hybrid Gold Nanomaterials for Biomedical Applications

Carbazole‐Based Tetrapodal Anchor Groups for Gold Surfaces: Synthesis and Conductance Properties

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