Publications: Material science

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Self-assembled hybrid nanocomposite films of carbon dots and hydrolyzed collagen

Publication year: 2019
Authors: da Pinto T.S. a, Rodrigues P.N.S. a, Marinho L.E.S. a, Verly R.M. a, Bretas Roa J.P. 1, de Oliveira L.C.Z. b, Pereira F.V. b, de Magalhaes M.T.Q. c,d, de Mesquita J.P. a
Published in: Materials Chemistry and Physics, 2019, Vol. 230, p. 44-53
In the present work, hydrophilic carbon dots (CD) prepared by cotton cellulose were used in the building of self-assembled films with hydrolyzed collagen (CL) to verify [...]

Enzyme Immobilization in Polyelectrolyte Brushes: High Loading and Enhanced Activity Compared to Monolayers

Publication year: 2019
Authors: del Castillo G.F-D. a, Koenig M. b, Mueller M. b, d, Eichhorn K.-J. b, Stamm M. b,d, Uhlmann P. b,c, Dahlin A. a
Published in: Langmuir, 2019, Vol. 35, p. 3479-3489
Catalysis by enzymes on surfaces has many applications. However, strategies for efficient enzyme immobilization with preserved activity are still in need of further development. [...]

Continuous assembly of supramolecular polyamine–phosphate networks on surfaces: preparation and permeability properties of nanofilms

Publication year: 2019
Authors: Agazzi M.L. a, Herrera S.E. a, Cortez M.L. a, Marmisollé W.A. a, von Bilderling C. a,b, Pietrasanta L.I. b,c, Azzaroni O. *a
Published in: Soft Matter, 2019, 15, p. 1640-1650
Supramolecular self-assembly of molecular building blocks represents a powerful “nanoarchitectonic” tool to create new functional materials with molecular-level feature control. Here, we propose [...]

Dynamic dispersal of surface layer biofilm induced by n-TiO2 based on surface plasmon resonance and waveguide

Publication year: 2018
Authors: Zhang P. 1,2, Guo J.S. 3, Yan P. 2, Chen Y.P. 4,2, Wang W. 5, Dai Y.Z. 1, Fang F. 2, Wang G.X. 6, Shen Y. 7
Published in: Applied and Environmental Microbiology, 2018
Pollutant degradation is mainly presented in the surface layer of biofilm, while the surface layer is the most vulnerable to the impairment of toxic pollutants. In this work, the effect of nanosized TiO2 [...]

Cyclodextrin-Functionalized Fiber Yarns Spun from Deep Eutectic Cellulose Solutions for Nonspecific Hormone Capture in Aqueous Matrices

Publication year: 2018
Authors: Orelma H. 1, Virtanen T. 1, Spoljaric S. 2, Lehmonen J. 1, Seppälä J. 2, Rojas O.J. 3, Harlin A. 1
Published in: Biomacromolecules, 2018, Vol. 19 (2), p. 652–661
A wood based yarn platform for capturing pharmaceutical molecules from water was developed. Cellulose fiber yarns were modified with cyclodextrins, and the capture of 17α-ethinyl estradiol (EE2), a synthetic [...]

Characterization of membrane–foulant interactions with novel combination of Raman spectroscopy, surface plasmon resonance and molecular dynamics simulation

Publication year: 2018
Authors: Virtanen T. a, Parkkila P. b, Koivuniemi A. b, Lahti J. a, Viitala T. b, Kallioinen M. a, Mänttäri M. a, Bunker A. b
Published in: Separation and Purification Technology, 2018, Vol. 5, p. 263-272
Adsorptive fouling, by phenolic compounds, is a serious issue regarding the development and use of membrane based filtration technologies for water [...]

Tuning the Stiffness of Surfaces by Assembling Genetically Engineered Polypeptides with Tailored Amino Acid Sequence

Publication year: 2018
Authors: Costa R.R. 1,2, González-Pérez M. 3,4, Herrero-Gutiérrez M. 3,4, Pires R.A. 1,2,5, Alonso M. 3,4, Rodriguez-Cabello J.C. 3,4, Reis R.L. 1,2,5, Pashkuleva I. 1,2
Published in: Biomacromolecules, 2018, Vol. 19(8), p. 3401-3411
We introduce elastin-like recombinamers (ELRs) as polypeptides with precise amino acid positioning to generate polypeptide coatings with tunable rigidity. Two ELRs [...]

The Influence of PEG-Thiol Derivatives on Controlling Cellular and Bacterial Interactions with Gold Surfaces

Publication year: 2018
Authors: Al-Ani A., Boden A., Al Kobaisi M., Pingle H., Wang P.-Y., Kingshott P.
Published in: Applied Surface Science, 2018, Vol. 462, p. 980-990
Surface modification with hydrophilic polymers is used extensively in a range of biomedical applications in order to control the interactions with proteins, cells and bacteria. owever, the architecture of the polymer layers [...]

In operando measurements of kinetics of solid electrolyte interphase formation in lithium-ion batteries

Publication year: 2018
Authors: Alemu T. a, Pradanawati S.A. a,b, Chang S.-C. a, Lin P.-L. a, Kuo Y.-L. c, Pham Q.-T. a, Su C.-H. d, Wang F.-M. a,e
Published in: Journal of Power Sources, 2018, Vol. 400, p. 426-433
This study applied two in operando techniques to reveal the reaction kinetics of solid electrolyte interphase formation on electrolyte and benzimidazole salt additives. The results obtained from studying interface effects reveal [...]

Salt-Induced Control of the Grafting Density in Poly(ethylene glycol) Brush Layers by a Grafting-to Approach

Publication year: 2018
Authors: Ortiz R. 1, Olsen S. 2, Thormann E. 1
Published in: Langmuir, 2018, Vol. 34(15), p. 4455-4464
In this work, a method to obtain control of the grafting density during the formation of polymer brush layers by the grafting-to method of thiolated poly(ethylene glycol) onto gold is presented. The grafting density [...]

Quantitative Analysis of Thickness and pH Actuation of Weak Polyelectrolyte Brushes

Publication year: 2018
Authors: Ferrand-Drake del Castillo G., Emilsson G., Dahlin A.
Published in: The Journal of Physical Chemistry C, 2018, Issue 122 (48), p. 27516–27527
Polymer brushes are widely used as surface coatings for various inert, functional, or responsive interfaces. If the polymer can alter its protonation state (a polyelectrolyte (PE)), the brush can switch [...]

Lectins at Interfaces—An Atomic Force Microscopy and Multi-Parameter-Surface Plasmon Resonance Study

Publication year: 2018
Authors: Niegelhell K. 1, Ganner T. 2, Plank H. 3, Jantscher-Krenn E. 4, Spirk S. 5
Published in: Materials 2018, Vol. 11(12), p. 2348
Lectins are a diverse class of carbohydrate binding proteins with pivotal roles in cell communication and signaling in many (patho)physiologic processes in the human body, making them promising [...]

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

Publication year: 2017
Authors: Ozer I. a,b, Tomak A. c, Zareie H.M. c,d, Baran Y. e,f Bulmus V. a,b
Published in: Biomacromolecules, 2017, Vol. 18 (9), p. 2699–2710
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 [...]

Interaction of industrially relevant cationic starches with cellulose

Publication year: 2017
Authors: Niegelhell K. a, b, Chemelli A. c, Hobisch J. d, Griesser T. e, Reiter H. b, f, Hirn U. a, f, Spirk S. a, b
Published in: Carbohydrate Polymers, Vol. 179, 2018, p. 290-296
Industrially relevant, commercially available cationic starches have been investigated towards their interaction capacity with cellulose thin films derived from trimethylsilyl cellulose (TMSC). The starches used in this study [...]

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, [...]

How Bound and Free Fatty Acids in Cellulose Films Impact Nonspecific Protein Adsorption

Publication year: 2017
Authors: Niegelhell K. a, Suessenbacher M. b, Sattelkow J. c, Plank H. c, Wang Y. d, Zhang K. d, Spirk S. a
Published in: Biomacromolecules, 2017, Vol. 18 (12), p. 4224–4231
The effect of fatty acids and fatty acid esters to impair nonspecific protein adsorption on cellulose thin films is investigated. Thin films are prepared by blending trimethylsilyl cellulose solutions with either cellulose stearoyl ester [...]

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. [...]

The effect of chemical additives on the strength, stiffness and elongation potential of paper

Publication year: 2017
Authors: Strand A. c, Khakalo A. a, Kouko J. b, Oksanen A. b, Ketola A. b, Salminen K. b, Rojas O. a, Retulainen E. b, Sundberg A. c
Published in: Nordic Pulp & Paper Research Journal, 2017, Vol. 32 No. 3, p. 324-335
The effects of wet-end additions of cationic starches and/or carboxymethyl cellulose (CMC) on paper properties was determined by papermaking trials. The aim of this study was to mitigate the distinctive decrease in strength [...]

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 [...]

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 [...]