Polyvalent Hydrogen-Bonding Functionalization of Ultrathin Hyperbranched Films on Polyethylene and Gold

Bergbreiter, David E.; Tao, Guoliang; Franchina, Justine G.; Sussman, Lachelle

doi:10.1021/ma000873d

Cited by 42 publications

(44 citation statements)

References 22 publications

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“…29 The products were washed with dichloromethane (Sigma-Aldrich) and the aqueous layers were evaporated to dryness at reduced pressure to yield the fluorescently labelled PAA. The residue was removed and dried under vacuum over CaCl 2 to produce a yield of ca.…”

Section: Synthesis and Characterisation Of Calcite And Poly Acrylic Acidmentioning

confidence: 99%

Adsorption of poly acrylic acid onto the surface of calcite: an experimental and simulation study

Sparks

Romero-González

El-Taboni

et al. 2015

Phys. Chem. Chem. Phys.

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Macromolecular binding to minerals is of great importance in the formation of biofilms, and carboxylate functional groups have been found to play a pivotal role in the functioning of these macromolecules. Here we present both fluorescence time-resolved anisotropy measurements and simulation data on the conformational behaviour and binding of a poly acrylic acid polymer. In solution the polymer exhibits a pH dependent behaviour, with a coiled conformation at a low pH and extended conformation at higher pH values. The polymer is readily adsorbed on the surface of calcite, preferring to bind in an extended conformation, with the strength of the adsorption dependent on the pH and presence of counter ions. We discuss the reasons why the calculated adsorption free energy differs from that obtained from a Langmuir isotherm analysis, showing that they refer to different quantities. The enhanced binding of the extended conformations shows the importance of flexibility in the binding of macromolecules.

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Section: Synthesis and Characterisation Of Calcite And Poly Acrylic Acidmentioning

confidence: 99%

Adsorption of poly acrylic acid onto the surface of calcite: an experimental and simulation study

Sparks

Romero-González

El-Taboni

et al. 2015

Phys. Chem. Chem. Phys.

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“…Another approach utilized the polyvalent hyperbranched PAA grafts on the gold surface or the PE surface. A soluble hydrogen‐bond acceptor polyacrylamide, such as poly( N ‐isopropylacrylamide) was used for a mild hydrogen‐bond‐based grafting method 99. Hyperbranched polyurethanes (PUs) have been synthesized by Deka et al100 Hyperbranched PU materials showed the high thermal stability and improved mechanical properties.…”

Section: Growth and Grafting Of Hyperbranched Polymersmentioning

confidence: 99%

Assembling hyperbranched polymerics

Peleshanko¹,

Tsukruk²

2011

J Polym Sci B Polym Phys

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A condensed overview discusses the existing grafting approaches and the surface behavior of various hyperbranched polymers. We focus on the recent strategies and corresponding characterization of the resulting surface morphologies and structures with a number of relevant recent results from the authors' own research and existing literature. Some results discussed here are important for prospective applications of hyperbranched polymers in biomedical fields, for resistive coatings, tough blends, and reinforced nanocomposites are briefly summarized as well. V C 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 83-100, 2012 KEYWORDS: adsorption; hyperbranched; LB films; structural characterization; surfaces INTRODUCTION This publication presents a condensed overview of the existing grafting approaches as applied to hyperbranched polymers and discusses the surface morphologies of these polymers and corresponding composites and coatings. We mostly focus on the recent strategies and corresponding characterization of the resulting surface morphologies and structures developed in the authors' group with some relevant examples from current literature. A number of relevant results are also included here especially in relation to recent developments related to novel synthetic approaches of hyperbranched molecules as well as emerging applications of hyperbranched polymers and coatings for biomedical purposes, as resistive coatings, tough blends, and reinforced nanocomposites. Some comprehensive recent reviews on highly branched polymers, which are focused mainly on synthetic aspects can be found in literature.

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“…1. In addition to growing films through electrostatic attractions, assemblies have been built through donor/acceptor interactions [33,34], hydrogen-bonding [35,36], and covalent bonds [37,38]. The LbL process is influenced by parameters such as chemistry of the polyelectrolyte [39], molecular weight [40], temperature [41,42], counterions [43], ionic strength [44], and pH [42,45].…”

Section: Introductionmentioning

confidence: 99%