Single-Molecule Force Spectroscopy on Poly(acrylic acid) by AFM

Li, Hongbin; Liu, Bingbing; Zhang, Xi; Gao, Chunxiao; Shen, Jiacong; Zou, Guangtian

doi:10.1021/la9800304

Cited by 109 publications

(129 citation statements)

References 21 publications

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“…Experiments about the stretching behavior of a molecule have been performed with polymers in different solvents [833,845,[1062][1063][1064][1065][1066][1067][1068][1069][1070][1071][1072][1073][1074][1075][1076][1077], DNA [1078][1079][1080], RNA [1081] and other macromolecules [1082][1083][1084][1085][1086].…”

Section: Molecule Stretchingmentioning

confidence: 99%

Force measurements with the atomic force microscope: Technique, interpretation and applications

Butt

Cappella

Kappl

2005

Surface Science Reports

3,187

2,949

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Section: Molecule Stretchingmentioning

confidence: 99%

Force measurements with the atomic force microscope: Technique, interpretation and applications

Butt

Cappella

Kappl

2005

Surface Science Reports

3,187

2,949

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“…This polymer has been intensively studied by various experimental techniques, including AFM. For example, AFM tip was used to stretch PAA polymer chains and measure the deformation of a single chain under tension [15]. AFM is applied not only for imaging of surfaces; it supplies information on mechanical properties in nanoscale, particularly important in the case of application in nanotechnology.…”

Section: Introductionmentioning

confidence: 99%

Effect of stabilizer type on the physicochemical properties of poly(acrylic acid)/silver nanocomposites for biomedical applications

Kaczmarek

Metzler

Węgrzynowska-Drzymalska

2016

Polym. Bull.

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Poly(acrylic acid), PAA, has been mixed in solution with silver nanoparticles, obtained by chemical reduction of silver nitrate. Two different sulfurcontaining organic compounds have been used as stabilizers of Ag nanoparticles: mercaptosuccinic acid (MSA) and 3-mercaptopropionic acid (MPA). The formation of Ag nanoparticles has been monitored by UV-Vis spectroscopy. The morphology and composition of obtained nanomaterials has been studied by electron microscopy techniques (SEM/EDX and HR-TEM). Nanomechanical properties of nanocomposites (adhesion and nanohardness) have been investigated by Atomic Force Microscopy (AFM). Thermal stability has been determined using thermogravimetric analysis. The exposure of specimens to UV radiation allowed to observe the changes in the nanoparticle structure and to estimate nanocomposite photostability. MSA has proved to be a better stabilizer of Ag nanoparticles immediately after the synthesis, when MPA provides better storage stability. MPA has allowed for the creation of nanoparticles using mixed reduction (chemical/photochemical) of AgNO 3 . It has been found that the nanocomposite materials are stable for 12 months of storage in solution and in solid form.

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“…In a subsequent study, Li et al investigated poly(acrylic acid) (PAA) and modeled the extension with the extensible FJC using a Kuhn length of 6.4 Å. 80 Interestingly, unlike previous studies of different polymers, the force-extension behavior of PAA could be effectively modeled using the extensible FJC model. 80 Oesterhelt et al 81 studied the effects of solvent on poly(ethylene glycol) (PEG) force-extension behavior.…”

Section: Carbohydrates and Synthetic Polymersmentioning

confidence: 99%

“…80 Interestingly, unlike previous studies of different polymers, the force-extension behavior of PAA could be effectively modeled using the extensible FJC model. 80 Oesterhelt et al 81 studied the effects of solvent on poly(ethylene glycol) (PEG) force-extension behavior. In water, PEG cannot be fit to the extensible FJC model, which may be due to intramolecular hydrogen bonding affecting net polymer length.…”

Section: Carbohydrates and Synthetic Polymersmentioning

confidence: 99%

New directions in single polymer dynamics

Marciel

Schroeder

2013

J Polym Sci B Polym Phys

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Single polymer techniques are a powerful set of molecular-level tools that enable the direct observation of polymer chain dynamics under highly non-equilibrium conditions. In this way, single polymer methods have been used to uncover fundamentally new information regarding the static and dynamic properties of polymeric materials. However, to achieve the full potential of these new methods, single polymer techniques must be further advanced to enable the study of polymers with complex architectures, heterogeneous chemistries, flexible backbones, and intermolecular interactions in entangled solutions, which reaches far beyond the current state-of-the-art. In this article, we explore recent developments in the area of single polymer physics, including single molecule force spectroscopy and fluorescence microscopy, and we further highlight exciting new directions in the field. V C 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 556-566 KEYWORDS: biopolymer; fluorescence; imaging; rheology; single molecule; single polymer INTRODUCTION Long chain macromolecules play an indispensable role in modern society. Synthetic polymers are used in a wide array of industrial applications, whereas natural polymers facilitate fundamental life processes. The molecular properties of polymer chains ultimately determine the emergent bulk properties of polymeric materials. In particular, the intrinsic chemical and physical properties of polymers, in conjunction with processing conditions, give rise to polymeric materials with desired function. For many years, bulk characterization techniques such as rheometry and light scattering have been used to infer polymer orientation, conformation, and microstructure at equilibrium and during non-equilibrium processing. Recently, single molecule techniques have enabled the direct observation of polymer chains in far-from-equilibrium conditions, thereby providing a window into the molecular structure and behavior of single polymers. In this way, single polymer studies have the potential to reveal fundamentally new information regarding the processing properties and static and dynamic morphology of polymeric materials. However, to achieve the full potential and promise of single molecule techniques, these new methods must be brought to bear on polymers with complex architectures and heterogeneous chemistries, reaching far beyond the current state-of-the-art. In this article, we explore recent advances in single polymer methods and highlight promising new directions in the field.

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Single-Molecule Force Spectroscopy on Poly(acrylic acid) by AFM

Cited by 109 publications

References 21 publications

Force measurements with the atomic force microscope: Technique, interpretation and applications

Force measurements with the atomic force microscope: Technique, interpretation and applications

Effect of stabilizer type on the physicochemical properties of poly(acrylic acid)/silver nanocomposites for biomedical applications

New directions in single polymer dynamics

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