Publications: Material science


Real-time adsorption of optical brightening agents on cellulose thin films

Publication year: 2021
Authors: C. Sampl a,b, S.Eyley c, W. Thielemans c, U.Hirn a,b,1, S.Spirk a,b
Published in: Carbohydrate Polymers, Vol. 261 (2021), 117826
Optical brightening agents (OBAs) are commonly used in textile and paper industry to adjust product brightness and color appearence. Continuous production processes lead to short residence time of the dyes in the fiber suspension, [...]

CVD-grown Graphene-on-Au characterization and sensing using Kretschmann-based SPR

Publication year: 2020
Authors: Jamil N.A.1, Mei G.S.1, Zain A.R. 1,2, Hewak D. 3, Huang C-C. 3, Mohamed M.A. 1, Majlis B.Y. 1, Menon P.S.1,*
Published in: Electron Devices Technology and Manufacturing Conference (EDTM), IEEE
A Kretschmann-based surface plasmon resonance (SPR) sensing method was used to determine the refractive index and thickness of graphene thin films. The measured complex refractive index (n,k) values of graphene on Au at 670 nm and 785 nm wavelength are 2.85, 0.74 and 3.1, 1.19 respectively. In further analysis, the analysis of sensing performance of graphene on Au SPR sensor for ethanol detection was obtained using Finite Difference Time Domain (FDTD) method.[...]

PEDOT-polyamine composite films for bioelectrochemical platforms -flexible and easy to derivatize

Publication year: 2020
Authors: Sappia L. +a, Piccinini E. +a, von Binderling C. a, Knoll W. bcd, Marmisollé W. *a, Azzorini O. *acd
Published in: Material Sciece and Engineering: C, 2020, Vol. 109, p.110575
We report a straightforward route for the preparation of flexible, electrochemically stable and easily functionalizable poly(3,4-ethylenedioxythiophene) (PEDOT) composite films deposited on PET foils as biosensing platforms. For this purpose, poly(allylamine) hydrochloride (PAH) was blended with PEDOT to provide amine-bearing sites for further biofunctionalization as well as to improve the mechanical properties of the films.[...]

Surface Preconditioning Influences the Antifouling Capabilities of Zwitterionic and Nonionic Polymer Brushes

Publication year: 2020
Authors: Víšová I. 1, Vrabcová M. 1, Forinová M. 1, Zhigunová Y. 1, Mironov V. 1, Houska . 1, Bittrich E. 2, Eichhorn K. 2, Hashim H. 3,4, Schovánek P. 1,5, Dejneka A. 1, Vaisocherová - Lísalová H. 1
Published in: Langmuir, 2020, Vol. 36, 29, 8485–8493
Polymer brushes not only represent emerging surface platforms for numerous bioanalytical and biological applications but also create advanced surface-tethered systems to mimic real-life biological processes. In particular, zwitterionic and nonionic polymer brushes have been intensively studied because of their extraordinary resistance to nonspecific adsorption of biomolecules (antifouling characteristics) as well as the ability to be functionalized with bioactive molecules.[...]

Modulation of Living Cell Behavior with Ultra‐Low Fouling Polymer Brush Interfaces

Publication year: 2020
Authors: Víšová I., Smolková B., Uzhytchak M., Vrabcová M., Zhigunova Y., Houska M. ,Surman F., de los Santos Pereira A.,Lunov O., Dejneka A., Vaisocherová‐Lísalová H.
Published in: Macromolecular Bioscience, 2020, Vol. 20, 3, p. 1900351
Ultra‐low fouling and functionalizable coatings represent emerging surface platforms for various analytical and biomedical applications such as those involving examination of cellular interactions in their native environments. Ultra‐low fouling surface platforms as advanced interfaces enabling modulation of behavior of living cells via tuning surface physicochemical properties are presented and studied.[...]

Tunable layer-by-layer films containing hyaluronic acid and their interactions with CD44

Publication year: 2020
Authors: Amorim, Pashkuleva I. ab, Reis C. defg, Reis, Pires R. abc
Published in: Journal of Materilals Chemistry, 2020, issue 17
We report on the development of layer-by-layer (LbL) constructs whose viscoelastic properties and bioactivity can be finely tuned by using polyanions of different size and/or crosslinking. As a polyanion we used hyaluronic acid (HA) – a multi-signaling biomolecule whose bioactivity depends on its molecular weight.

Acceleration of biofilm formation in start-up of sequencing batch biofilm reactor using carriers immobilized with Pseudomonas stutzeri strain XL-2

Publication year: 2020
Authors: Zhang P., Ding X., Zhao B. ⁎, An Q., Guo J.S.
Published in: Bioresource Technology, 2020, vol. 314
P. stutzeri strain XL-2 initially immobilized on polypropylene carriers accelerated the biofilm formation in startup of sequencing batch biofilm reactor (SBBR) (denoted R1). The biofilm formation in R1 was approximately completed in 36 days, which was shorter than that of 48 days in an identical SBBR (denoted R2) without strain XL-2.P. stutzeri strain XL-2 initially immobilized on polypropylene carriers accelerated the biofilm formation in startup of sequencing batch biofilm reactor (SBBR) (denoted R1). The biofilm formation in R1 was approximately completed in 36 days, which was shorter than that of 48 days in an identical SBBR (denoted R2) without strain XL-2.P. stutzeri strain XL-2 initially immobilized on polypropylene carriers accelerated the biofilm formation in startup of sequencing batch biofilm reactor (SBBR) (denoted R1). The biofilm formation in R1 was approximately completed in 36 days, which was shorter than that of 48 days in an identical SBBR (denoted R2) without strain XL-2.[...]

Following in Situ the Degradation of Mesoporous Silica in Biorelevant Conditions: At Last, a Good Comprehension of the Structure Influence

Publication year: 2020
Authors: Bindini E. 1,2, Chehadi Z. 1, Faustini M. 1, Albouy P. 3, Grosso D. 4, Cattoni A. 2, Chanéac C. 1, Azzaroni O. 5, Sanchez C. 1, Boissiè C. 1
Published in: ACS Applied Materials and Interfaces, 2020, Vol.12, p.13598–13612
Mesoporous silica nanoparticles (MSNs) have seen a fast development as drug delivery carriers thanks to their tunable porosity and high loading capacity. The employ of MSNs in biomedical applications requires a good understanding of their degradation behavior both to control drug release and to assess possible toxicity issues on human health.[...]

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 [...]

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. [...]

Layer‐by‐Layer Formation of Polyamine‐Salt Aggregate/Polyelectrolyte Multilayers. Loading and Controlled Release of Probe Molecules from Self‐Assembled Supramolecular Networks

Publication year: 2019
Authors: Herrera S.E. 1, Agazzi M.L. 1, Cortez M.L. 1, Marmisollé W.A. 1, von Bildering C. 1,2, Azzaroni O. 1
Published in: Macromolecular Chemistry and Physics, 2019
The use of soft materials as building blocks in layer‐by‐layer (LbL) assemblies represent a very appealing and useful approach to enhance the loading capacity of thin films. Here, the capacity of positively charged polyamine‐salt aggregates (PSAs) [...]

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

Publication year: 2019
Authors: Tarciane da S. Pinto a, Priscilla N.S. Rodrigues a, Luiz E.S. Marinho a, Rodrigo M. Verly a, J.P. Bretas Roa a, Luiz C.A. de Oliveira b, Fabiano V. Pereira b, Mariana T.Q. de Magalhães c,d, João P. de Mesquita 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 their properties, especially molecular interactions and morphology. [...]

Handbook of MP-SPR

Publication year: 2019
Authors: Marquart A., Kuncová-Kallio J., Albers M., Bombera R., Ståhlberg R.
Published in: Handbook of MP-SPR, 2019, Vol. 1
Handbook of Multi-Parametric Surface Plasmon Resonance for Molecular Interaction Analysis - Theory and Practice

Interface Interaction Behavior of Self-Terminated Oligomer Electrode Additives for a Ni-Rich Layer Cathode in Lithium-Ion Batteries: Voltage and Temperature Effects

Publication year: 2019
Authors: Fu-Ming Wang,*,†,‡,§,∥ Tibebu Alemu,† Nan-Hung Yeh,† Xing-Chun Wang,† Yi-Wen Lin,† Chun-Chuan Hsu,† Yung-Jen Chang,† Chia-Hao Liu,† Chiao-I Chuang,† Li-Hao Hsiao,† Jin-Ming Chen,⊥ Shu-Chih Haw,⊥ Wei-Ling Chen,† Quoc-Thai Pham,† and Chia-Hung Su
Published in: ASC Applied Materials and Interfaces
Self-terminated oligomer additives synthesized from bismaleimide and barbituric acid derivatives improve the safety and performance of lithium-ion batteries (LIBs). [...]

Layer-by-Layer nanostructured films of magnetite nanoparticles and polypyrrole towards synergistic effect on methylparaben electrochemical detection

Publication year: 2019
Authors: Lucas F. de Lima, Cristiane M. Daikuzono, Celina M. Miyazaki, Elisabete A. Pereira, Marystela Ferreira
Published in: Applied Surface Science
The sustained use of cosmetics, hygiene products and medicines containing methylparaben (MeP) can be related to cases of cancer in women and children, which is why it is important to develop simple ways to monitor this compound.

Multilayer Density Analysis of Cellulose Thin Films

Publication year: 2019
Authors: Sampl C. 1,2ʈ, Niegelhell K. 1,2ʈ, Reishofer D. 1ʈ, Resel R. 3ʈ, Spirk S. 1,2*ʈ, Hirn U. 1,2ʈ
Published in: Biopolymer Thin Films and Coatings
An approach for the multilayer density analysis of polysaccharicle thin films at the example of cellulose is presented. In detail, a model was developed for the evaluation of the density in different layers across the thickness direction of the film.[...]

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 [...]