Quantitative interpretation of PAMAM dendrimers adsorption on silica surface

Tokarczyk, Karolina; Jachimska, Barbara

doi:10.1016/j.jcis.2017.05.002

Cited by 28 publications

(41 citation statements)

References 37 publications

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“…Generally, the adsorbed amount detected by QCM-D is higher than that detected from SPR. Indeed, SPR is sensitive to the "dry" mass adsorbed related to refractive index changes, while QCM-D is proportional to the hydrated mass adsorbed on the surface, which consists of the adsorbed molecules and their associated "bound" water molecules involved in hydration shells as well as the "trapped" water inside the layer structure [36,40,41].…”

Section: Hydration State Of the Adsorbed Filmmentioning

confidence: 99%

“…Combining these two techniques can provide information on the sorption mechanisms, structural changes, and obtained state of hydration of the adsorbed film. These techniques have been widely used to investigate the adsorption properties of biopolymers, proteins, and polysaccharides on various type of surfaces with or without grafting [34][35][36][37][38][39][40][41][42][43][44][45][46]. A comparison of the two gums should allow their respective contribution to the surface interactions leading to adsorption to be deciphered.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of Hyperbranched Arabinogalactan-Proteins from Plant Exudate at the Solid–Liquid Interface

Davantès

Nigen

Sánchez

et al. 2019

Colloids and Interfaces

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Adsorption of hyperbranched arabinogalactan-proteins (AGPs) from two plant exudates, A. senegal and A. seyal, was thoroughly studied at the solid–liquid interface using quartz crystal microbalance with dissipation monitoring (QCM-D), surface plasmon resonance (SPR), and atomic force microscopy (AFM). Isotherms of the adsorption reveal that 3.3 fold more AGPs from A. seyal (500 ppm) are needed to cover the gold surface compared to A. senegal (150 ppm). The pH and salt concentration of the environment greatly affected the adsorption behavior of both gums, with the surface density ranging from 0.92 to 3.83 mg m−2 using SPR (i.e., “dry” mass) and from 1.16 to 19.07 mg m−2 using QCM-D (wet mass). Surprisingly, the mass adsorbed was the highest in conditions of strong electrostatic repulsions between the gold substrate and AGPs, i.e., pH 7.0, highlighting the contribution of other interactions involved in the adsorption process. Structural changes of AGPs induced by pH would result in swelling of the polysaccharide blocks and conformational changes of the polypeptide backbone, therefore increasing the protein accessibility and hydrophobic interactions and/or hydrogen bonds with the gold substrate.

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Section: Hydration State Of the Adsorbed Filmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption of Hyperbranched Arabinogalactan-Proteins from Plant Exudate at the Solid–Liquid Interface

Davantès

Nigen

Sánchez

et al. 2019

Colloids and Interfaces

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show abstract

“…ammonium cations) on negatively charged surfaces (silica) [63]. For this reason, the pH the and the ionic strength of the solution exert an important influence in as much as they affect charge of the molecules and the ceramic support [64]. Organic loading is also governed by the pore parameters of each particular ceramic [65].…”

Section: Simple Coating By Absorption Of Dendritic Additives Into Thementioning

confidence: 99%

Dendritic Polymers as Promising Additives for the Manufacturing of Hybrid Organoceramic Nanocomposites with Ameliorated Properties Suitable for an Extensive Diversity of Applications

Douloudi

Nikoli

Katsika

et al. 2020

Preprint

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As the field of nanoscience is rapidly evolving, interest for novel, upgraded nanomaterials with combinatory features is also inevitably increasing. Hybrid composites, offer simple, budget-conscious and environmental-friendly solutions that can cater multiple needs at the same time and be applicable in many nanotechnology-related and interdisciplinary studies. The physicochemical idiocrasies of dendritic polymers have inspired their implementation as sorbents, active ingredient carriers and templates for complex composites. Ceramics are distinguished for their mechanical superiority and absorption potential that render them ideal substrates for separation and catalysis technologies. The integration of dendritic compounds to these inorganic hosts can be achieved through chemical attachment of the organic moiety onto functionalized surfaces, impregnation and absorption inside the pores, conventional sol-gel reactions or via biomimetic mediation of dendritic matrices, inducing the formation of usually spherical hybrid nanoparticles. Alternatively, dendritic polymers can propagate from ceramic scaffolds. All these variants are covered in detail. Optimization techniques as well as established and prospected applications are also presented.

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“…Because of its significance, particle and bioparticle deposition has been extensively studied, using a plethora of experimental methods, such as the optical microscopy [ 14 , 15 , 16 , 17 ], scanning probe microcopies comprising atomic force microscopy (AFM) [ 18 , 19 , 20 , 21 ], scanning electron microscopy (SEM) [ 22 , 23 ], optical techniques such as ellipsometry, reflectometry [ 24 , 25 ], light mode waveguide spectroscopy (OWLS) [ 26 , 27 , 28 , 29 ] and surface plasmon resonance (SPR) [ 30 , 31 ]. However, these techniques exhibit some limitations; in particular, they do not provide information about the adhesive contact strength among the deposited particles and the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, in contrast to the streaming potential methods, the QCM signal is not directly affected by the solute or the interface charge. Because of its numerous advantages and a deceptive simplicity of measurements, the QCM method is used in numerous investigations involving nanoparticles [ 3 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ], macroions [ 29 , 31 , 51 , 52 , 53 ] proteins [ 27 , 28 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ], viruses [ 66 , 67 , 68 , 69 , 70 ], bacteria [ 71 , 72 , 73 , 74 , 75 , 76 , 77 ], and living cells [ 78 , 79 ,…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle and Bioparticle Deposition Kinetics: Quartz Microbalance Measurements

et al. 2021

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Controlled deposition of nanoparticles and bioparticles is necessary for their separation and purification by chromatography, filtration, food emulsion and foam stabilization, etc. Compared to numerous experimental techniques used to quantify bioparticle deposition kinetics, the quartz crystal microbalance (QCM) method is advantageous because it enables real time measurements under different transport conditions with high precision. Because of its versatility and the deceptive simplicity of measurements, this technique is used in a plethora of investigations involving nanoparticles, macroions, proteins, viruses, bacteria and cells. However, in contrast to the robustness of the measurements, theoretical interpretations of QCM measurements for a particle-like load is complicated because the primary signals (the oscillation frequency and the band width shifts) depend on the force exerted on the sensor rather than on the particle mass. Therefore, it is postulated that a proper interpretation of the QCM data requires a reliable theoretical framework furnishing reference results for well-defined systems. Providing such results is a primary motivation of this work where the kinetics of particle deposition under diffusion and flow conditions is discussed. Expressions for calculating the deposition rates and the maximum coverage are presented. Theoretical results describing the QCM response to a heterogeneous load are discussed, which enables a quantitative interpretation of experimental data obtained for nanoparticles and bioparticles comprising viruses and protein molecules.

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Quantitative interpretation of PAMAM dendrimers adsorption on silica surface

Cited by 28 publications

References 37 publications

Adsorption of Hyperbranched Arabinogalactan-Proteins from Plant Exudate at the Solid–Liquid Interface

Adsorption of Hyperbranched Arabinogalactan-Proteins from Plant Exudate at the Solid–Liquid Interface

Dendritic Polymers as Promising Additives for the Manufacturing of Hybrid Organoceramic Nanocomposites with Ameliorated Properties Suitable for an Extensive Diversity of Applications

Nanoparticle and Bioparticle Deposition Kinetics: Quartz Microbalance Measurements

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