Publications: Material science

Effect of Molecular Architecture on Cell Interactions and Stealth Properties of PEG

Publication year: 2017
Authors: Imran Ozer †‡§, Aysel Tomak ∥, Hadi M. Zareie ∥⊥, Yusuf Baran #○, Volga Bulmus †‡
Published in: Biomacromolecules, 2017
PEGylation, covalent attachment of PEG to therapeutic biomolecules, in which suboptimal pharmacokinetic profiles limiting their therapeutic utility are of concern, is a widely applied technology. However, this technology [...]

Effect of Ionic Strength and Surface Charge Density on the Kinetics of Cellulose Nanocrystal Thin Film Swelling

Publication year: 2017
Authors: Michael S. Reid † , Stephanie A. Kedzior †, Marco Villalobos ‡, Emily D. Cranston*†
Published in: Langmuir, 2017, Vol. 33 (30), p. 7403–7411
This work explores cellulose nanocrystal (CNC) thin films (<50 nm) and particle–particle interactions by investigating film swelling in aqueous solutions with varying ionic strength [...]

New Approach for Thickness Determination of Solution-Deposited Graphene Thin Films

Publication year: 2017
Authors: Henri Jussila †‡, Tom Albrow-Owen †, He Yang ‡, Guohua Hu †, Sinan Aksimsek §‡, Niko Granqvist ∥, Harri Lipsanen ‡, Richard C. T. Howe †, Zhipei Sun ‡, Tawfique Hasan †
Published in: ACS Omega, 2017, Vol. 2 (6), p. 2630–2638
Solution processing-based fabrication techniques such as liquid phase exfoliation may enable economically feasible utilization of graphene and related nanomaterials in real-world devices in the near future. [...]

Lignin Films from Spruce, Eucalyptus, and Wheat Straw Studied with Electroacoustic and Optical Sensors: Effect of Composition and Electrostatic Screening on Enzyme Binding

Publication year: 2017
Authors: Pereira A. 1,2, Hoeger I.C. 2, Ferrer A. 2 , Rencoret J. 1, del Rio J.C. 1, Kruus K. 3§, Rahikainen J. 3, Kellock M. 3, Gutiérrez A. 1, Rojas O.J. 2,4
Published in: Biomacromolecules, 2017, Vol. 18 (4), p. 1322–1332
Lignins were isolated from spruce, wheat straw, and eucalyptus by using the milled wood lignin (MWL) method. Functional groups and compositional analyses were assessed [...]

Quantitative interpretation of PAMAM dendrimers adsorption on silica surface

Publication year: 2017
Authors: Tokarczyk K., Jachimska B
Published in: Journal of Colloid and Interface Science, 2017 Vol. 503, p. 86-94
Understanding the dendrimer-solid support interaction is of great importance for dendrimer-based drug delivery system design. The maximum surface coverage on a hydrophilic silica surface was determined using [...]

Effect of Lipoxygenase Oxidation on Surface Deposition of Unsaturated Fatty Acids

Publication year: 2017
Authors: Tayeb A.H.1, Hubbe M.A.1, Zhang Y. 2 , Rojas O.J. 1,3
Published in: Langmuir, 2017, Vol. 33 (18), p. 4559–4566
We studied the interactions of lipid molecules (linoleic acid, glycerol trilinoleate and a complex mixture of wood extractives) with hydrophilic and hydrophobic surfaces (cellulose nanofibrils (CNFs) [...]

Layer-by-layer assemblies of highly connected polyelectrolyte capped-Pt nanoparticles for electrocatalysis of hydrogen evolution reaction

Publication year: 2017
Authors: Fenoy G.E. a, b, Maza E. a, c, Zelaya E. d, Marmisollé W.A. a, Azzaroni O. a
Published in: Applied Surface Science, 2017, Vol. 416, p. 24–32
Herein we present a simple one-step method to produce polyelectrolyte-capped Pt nanoparticles able to be assembled into layer-by-layer arrays [...]

Bovine Serum Albumin Adsorption at a Silica Surface Explored by Simulation and Experiment

Publication year: 2017
Authors: Kubiak-Ossovska K. 1, Tokarczyk K. 2, Jachimska B. 2, Mulheran A.P. 1
Published in: Journal of Physical Chemistry B, 2017, Vol. 121 (16), p. 3975–3986
Molecular details of BSA adsorption on a silica surface are revealed by fully atomistic molecular dynamics (MD) simulations (with a 0.5 μs trajectory), supported by dynamic light scattering (DLS), zeta potential, [...]

Protein Adsorption Tailors the Surface Energies and Compatibility between Polylactide and Cellulose Nanofibrils

Publication year: 2017
Authors: A. Khakalo 1, I. Filpponen 1,2, O.J. Rojas 1,3
Published in: Biomacromolecules, 2017
The state of dispersion and the interactions between a polymer and a filler in a nanocomposite crucially define its properties and performance.The affinity of polylactide (PLA) [...]

“Click” access to multilayer functionalized Au surface: A terpyridine patterning example

Publication year: 2017
Authors: F.A. Martin a, D. Marconi a, S. Neamtu a, T. Radu a, M. Florescu b, R. Turcu a, C. Lar c, N.D. Hădade c, I. Grosu c, I. Turcu a
Published in: Materials Science and Engineering: C, 2017, Vol. 75, p. 1343–1350
This work is focused on self-assembled monolayers (SAMs) fabrication, using two types of Au surfaces, by subsequent attachment of different layers in order to develop [...]

Dangerous liaisons: anion-induced protonation in phosphate-polyamine interactions and their implications for charge states of biologically relevant surfaces

Publication year: 2017
Authors: Laucirica G., Marmisollé W.A., Azzaroni O.
Published in: Physical Chemistry Chemical Physics, 2017, Vol. 19 (12), p. 8612-8620
Although not always considered a preponderant interaction, amine-phosphate interactions are omnipresent in multiple chemical and biological systems. [...]

Improving the mechanical properties of CNF films by NMMO partial dissolution with hot calender activation

Publication year: 2017
Authors: Orelma H., Korpela A., Kunnari V., Harlin A., Suurnäkki A.
Published in: Cellulose 2017
Reinforcing of cellulose nanofibril (CNF) films by partial dissolution with N-methylmorpholine-N-oxide (NMMO) was investigated. The method investigated is composed of impregnation of CNF film [...]

Interaction of Tissue Engineering Substrates with Serum Proteins and Its Influence on Human Primary Endothelial Cells

Publication year: 2017
Authors: Mohan T. 1, Niegelhell K. 2, Nagaraj C. 3,4, Reishofer D. 2,5, Spirk S. 2,5, Olschewski A. 3,4, Stana Kleinschek K. 5, Kargl R. 2,5
Published in: Biomacromolecules, 2017, Vol. 18 (2), p. 413–421
Polymer-based biomaterials particularly polycaprolactone (PCL) are one of the most promising substrates for tissue engineering.The surface chemistry of these materials plays a major role [...]

Layer-by-layer self-assembly for carbon dots/chitosan-based multilayer: Morphology, thickness and molecular interactions

Publication year: 2017
Authors: T. da S.Pinto a, L.A. Alves a, G. de Azevedo Cardozo a, V.H.O. Munhoz a, R.M. Verly a, F.V. Pereira b, J.P. de Mesquita a
Published in: Materials Chemistry and Physics, Vol. 186 (2017), p. 81–89
Oxidized Carbon dots, prepared from the acid dehydration of cellulose, were used in the preparation of self-assembled films with the biopolymer chitosan. [...]

Surface plasmon resonance methodology for monitoring polymerization kinetics and morphology changes of brushes-evaluated with poly(N-isopropylacrylamide)

Publication year: 2017
Authors: G. Emilsson a, R.L. Schoch b, P. Oertle b, K. Xiong a, R.Y. H. Lim b, A.B. Dahlin a
Published in: Applied Surface Science, Vol. 396, p. 384-392
Polymerization from surfaces and the resulting “brushes” have many uses in the development of novel materials and functional interfaces. However, it is difficult to accurately monitor the polymerization rate, [...]

Dual-Wavelength Surface Plasmon Resonance for Determining the Size and Concentration of Sub-Populations of Extracellular Vesicles

Publication year: 2016
Authors: Rupert D.L.M. 1, Shelke G.V. 2, Emilsson G. 1, Claudio V. 1, Block S. 1, Lässer C. 2, Dahlin A. 1, Lötvall J.O. 2, Bally M. 1,3, Zhdanov V.P. 1,4, Höök F. 1
Published in: Analytical Chemistry, 2016, Vol. 88 (20), p. 9980–9988
Accurate concentration determination of subpopulations of extracellular vesicles (EVs), such as exosomes, is of importance both in the context of understanding their fundamental biological role [...]

Using electrochemical surface plasmon resonance for in-situ kinetic investigations of solid electrolyte interphase formation in lithium ion battery

Publication year: 2016
Authors: Sylvia Ayu Pradanawati a, Fu-Ming Wang a, b, Chia-Hung Su c
Published in: Journal of Power Sources, Vol. 330, 2016, p. 127–131
The solid electrolyte interphase (SEI) significantly affects the energy density and safety performance of lithium ion batteries. Previous studies have shown that conventional analyses cannot characterize the real-time [...]

Determining Number Concentrations and Diameters of Polystyrene Particles by Measuring the Effective Refractive Index of Colloids Using Surface Plasmon Resonance

Publication year: 2016
Authors: Tuoriniemi J. 1, Moreira B. 1, Safina G. 1,2
Published in: Langmuir, 2016, Vol. 32 (41), p. 10632–10640
The capabilities of surface plasmon resonance (SPR) for characterization of colloidal particles were evaluated for 100, 300, and 460 nm nominal diameter polystyrene (PS) latexes. First the accuracy of measuring [...]

Topography effects in AFM force mapping experiments on xylan-decorated cellulose thin films

Publication year: 2016
Authors: Ganser Ch. 1,2,3, Niegelhell K. 4, Czibula C. 1,3, Chemelli A. 5, Teichert Ch. 1,3, Schennach R. 3,6, Spirk S. 4,7
Published in: International Journal of the Biology, Chemistry, Physics and Technology of Woo
Xylan-coated cellulose thin films has been investigated by means of atomic force microscopy (AFM) and force mapping experiments. The birch xylan deposition on the film was performed under control [...]

Enzymes as Biodevelopers for Nano- And Micropatterned Bicomponent Biopolymer Thin Films

Publication year: 2016
Authors: Niegelhell K. 1, Süßenbacher M. 1, Jammernegg K. 1, Ganner T. 2, Schwendenwein D. 3, Schwab H. 3, Stelzer F. 1, Plank H. 2, Spirk S. 1,4
Published in: Biomacromolecules
The creation of nano- and micropatterned polymer films is a crucial step for innumerous applications in science and technology. However, there are several problems associated with environmental aspects concerning the polymer synthesis itself, cross-linkers to induce the patterns as well as toxic solvents [...]