Directly observed Au–S bond breakage due to swelling of the anchored polyelectrolyte
- 26 November 2010
- journal article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- Vol. 47 (4), 1190-1192
- https://doi.org/10.1039/c0cc04291a
Abstract
A weak polyelectrolyte coating, carboxylated poly(oligo(ethylene glycol)methacrylate-co-2-hydroxyethylmethacrylate), was prepared viasurface initiated polymerization (SIP) from initiators immobilized to gold surface through the Au–S bonds. When dry thickness increased up to 75 nm, this polyelectrolyte coating was pulled off the Au substrate by simply exposing to phosphate buffer saline (PBS, pH = 7.4, [Na+] = 150 mM). This covalent bond breaking (CBB) behavior was monitored in situ using a quartz crystal microbalance (QCM) and CBB was associated with the swelling of the anchored polyelectrolyte chains.Keywords
This publication has 26 references indexed in Scilit:
- A quartz crystal microbalance-based molecular ruler for biopolymersChemical Communications, 2009
- Exploring Actuation and Mechanotransduction Properties of Polymer BrushesMacromolecular Rapid Communications, 2008
- A Nanotumbleweed: Breaking Away a Covalently Tethered Polymer Molecule by Noncovalent InteractionsJournal of the American Chemical Society, 2007
- Study and Application of a Linear Frequency−Thickness Relation for Surface-Initiated Atom Transfer Radical Polymerization in a Quartz Crystal MicrobalanceMacromolecules, 2007
- Stressed molecules break downNature, 2006
- Mechanochemistry: The Mechanical Activation of Covalent BondsChemical Reviews, 2005
- Synthesis of tethered-polymer brush by atom transfer radical polymerization from a plasma-polymerized-film-coated quartz crystal microbalance and its application for immunosensorsBiosensors and Bioelectronics, 2004
- Synthesis and swelling behavior of a weak polyacid brushThe Journal of Chemical Physics, 2002
- Force Spectroscopy of Molecular Systems—Single Molecule Spectroscopy of Polymers and BiomoleculesAngewandte Chemie-International Edition, 2000
- How Strong Is a Covalent Bond?Science, 1999