A5079012914- Polymer Surface Interaction Studies
- Marine Biology and Environmental Chemistry
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Advanced Sensor and Energy Harvesting Materials
- Organic Electronics and Photovoltaics
- Lipid Membrane Structure and Behavior
- Force Microscopy Techniques and Applications
- Microplastics and Plastic Pollution
- Surface Modification and Superhydrophobicity
- Perovskite Materials and Applications
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Advanced Thermoelectric Materials and Devices
- Advanced battery technologies research
- Silk-based biomaterials and applications
- Diatoms and Algae Research
- Mechanical and Optical Resonators
- Analytical Chemistry and Sensors
- Supramolecular Self-Assembly in Materials
- Hydrogels: synthesis, properties, applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Fuel Cells and Related Materials
- Adhesion, Friction, and Surface Interactions
- Electrochemical sensors and biosensors
Linköping University
2015-2024
Bioengineering Center
2020
University of Dundee
2008
University of Birmingham
2008
Newcastle University
2008
KTH Royal Institute of Technology
1996-2001
University of Oxford
2001
TreatingPSS (Clevios) with certain additives, such as ethylene glycol (EG), dimethyl sulfoxide (DMSO) and sorbitol, has been shown to increase the conductivity of this material from roughly 1 nearly 1000 S/cm. Using a slow drying method, we show that additive induced separation between free PSS reorganizedPSS complexes in highly conductivePSS films. Additives (DMSO, DEG, PEG 400) were included inPSS aqueous dispersions at large volume fractions. The mixtures slowly dried under room...
Abstract The rapid growth of wearables has created a demand for lightweight, elastic and conformal energy harvesting storage devices. conducting polymer poly(3,4-ethylenedioxythiophene) shown great promise thermoelectric generators, however, the thick layers pristine required effective are too hard brittle seamless integration into wearables. Poly(3,4-ethylenedioxythiophene)-elastomer composites have been developed to improve its mechanical properties, although so far without simultaneously...
Using a template-stripping method, macroscopic gold surfaces with root-mean-square roughness $<~0.4 \mathrm{nm}$ have been prepared, making them useful for studies of surface interactions in the nanometer range. The utility such substrates is demonstrated by measurements Casimir force at separations between 20 and 100 nm, resulting good agreement theory. significance quantification this are addressed, as well some methodological aspects regarding measurement high accuracy.
This work describes the fabrication, characterization, and biological evaluation of a thin protein-resistant poly(ethylene glycol) (PEG)-based hydrogel coating for antifouling applications. The was fabricated by free-radical polymerization on silanized glass silicon polystyrene-covered gold. physicochemical properties were characterized infrared spectroscopy, ellipsometry, contact angle measurements. In particular, chemical stability in artificial seawater evaluated over six-month period....
PEDOT-Tos is one of the conducting polymers that displays most promising thermoelectric properties.
Doping of the reduced (undoped) PEDOT by oxygen during reduction reaction (ORR).
The thermoelectric (TE) phenomena are intensively explored by the scientific community due to rather inefficient way energy resources used with a large fraction of wasted in form heat. Among various materials, mixed ion‐electron conductors (MIEC) recently being as potential thermoelectrics, primarily their low thermal conductivity. combination electronic and ionic charge carriers those inorganic or organic materials leads complex evolution thermovoltage ( V oc ) time, temperature, and/or...
Spectroelectrochemical investigation of redox states in a polypyrrole/lignin composite electrode material.
Environmentally friendly halide double perovskites with improved stability are regarded as a promising alternative to lead perovskites. The benchmark perovskite, Cs2 AgBiBr6 , shows attractive optical and electronic features, making it for high-efficiency optoelectronic devices. However, the large band gap limits its further applications, especially photovoltaics. Herein, we develop novel crystal-engineering strategy significantly decrease by approximately 0.26 eV, reaching smallest reported...
Abstract Electrocatalysis for energy‐efficient chemical transformations is a central concept behind sustainable technologies. Numerous efforts focus on synthesizing hydrogen peroxide, major industrial and potential fuel, using simple green methods. Electrochemical synthesis of peroxide promising route. Herein it demonstrated that the conducting polymer poly(3,4‐ethylenedioxythiophene), PEDOT, an efficient selective heterogeneous catalyst direct reduction oxygen to peroxide. While many...
We embedded IR-resonant microparticles as visible scatterers and thermal emitters in a transparent nanocellulose composite, to form metamaterial that provides radiative cooling while simultaneously functioning an optical diffuser.
Abstract A common way of determining the majority charge carriers pristine and doped semiconducting polymers is to measure sign Seebeck coefficient. However, a polarity change coefficient has recently been observed occur in highly polymers. Here, it shown that inversion result density states filling opening hard Coulomb gap around Fermi energy at high doping levels. Electrochemical n‐doping used induce carrier (>1 charge/monomer) model system poly(benzimidazobenzophenanthroline) (BBL). By...
Understanding how surface physicochemical properties influence the settlement and adhesion of marine fouling organisms is important for development effective environmentally benign antifouling coatings. We demonstrate that thickness random poly(HEMA-co-PEG10MA) copolymer brushes affect behavior. Films thicknesses ranging from 50 to 1000 Å were prepared via surface-initiated atom-transfer radical polymerization characterized using infrared spectroscopy, ellipsometry, atomic force microscopy...
Abstract A free‐standing high‐output power density polymeric thermoelectric (TE) device is realized based on a highly conductive (≈2500 S cm −1 ) structure‐ordered poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate film (denoted as FS‐PEDOT:PSS) with Seebeck coefficient of 20.6 µV K , an in‐plane thermal conductivity 0.64 W m and peak factor 107 µW −2 at room temperature. Under small temperature gradient 29 K, the TE demonstrates maximum output 99 ± 18.7 which highest value achieved in...
The flatworm Macrostomum lignano features a duo-gland adhesive system that allows it to repeatedly attach and release from substrates in seawater within minute. However, little is known about the molecules involved this temporary adhesion. In study, we show attachment of M. relies on secretion two large proteins, adhesion protein 1 (Mlig-ap1) Mlig-ap2. We revealed both proteins are expressed gland cells their distribution footprints was spatially restricted. RNA interference knockdown...
The colonization of man made structures by marine or freshwater organisms “biofouling” is a problem for maritime and aquaculture industries. Increasing restrictions on the use toxic coatings that prevent biofouling, create gap in market requires new approaches to produce novel nonbiocidal alternatives. This review details systematic strategy adopted an FP6 EU Integrated Project “AMBIO” develop fundamental understanding key surface properties influence settlement adhesion fouling organisms....
Gibbs surface energy has long been considered to be an important parameter in the design of fouling-resistant surfaces for marine applications. Rigorous testing hypothesis that settlement is related however never accomplished, due mainly practical limitations imposed by necessary combination engineering and biological evaluation methods. In this article, effects charge on cyprids fouling barnacle, Balanus amphitrite, were evaluated. Settlement assays conducted a range self-assembled...
The resistance of charged polymers to biofouling was investigated by subjecting cationic (PDMAEMA), anionic (PSPMA), neutral (PHEMA-co-PEG10MA), and zwitterionic (PSBMA) brushes assays testing protein adsorption; attachment the marine bacterium Cobetia marina; settlement adhesion strength zoospores green alga Ulva linza; barnacle (Balanus amphitrite B. improvisus) cypris larvae; field immersion tests. Several results go beyond expected dependence on direct electrostatic attraction; PSPMA...
We investigated the influence of backbone regiochemistry on conductivity, charge density, and polaron structure in widely studied n-doped donor-acceptor polymer poly[N,N'-bis(2-octyldodecyl)-1,4,5,8-naphthalenediimide-2,6-diyl]-alt-5,5'-(2,2'-bithiophene) [P(NDI2OD-T2)]. In contrast to classic semicrystalline polymers such as poly(3-hexylthiophene) (P3HT), regioirregular (RI) naphthalenediimide (NDI)-bithiophene (T2) does not alter intramolecular steric demand chain versus regioregular (RR)...
Abstract Environmentally friendly halide double perovskites with improved stability are regarded as a promising alternative to lead perovskites. The benchmark perovskite, Cs 2 AgBiBr 6 , shows attractive optical and electronic features, making it for high‐efficiency optoelectronic devices. However, the large band gap limits its further applications, especially photovoltaics. Herein, we develop novel crystal‐engineering strategy significantly decrease by approximately 0.26 eV, reaching...
Surfaces prepared by self-assembly of alkanethiolates onto thin (10 nm) gold films supported on glass have been used as substrates for surface force measurements between macroscopic surfaces. Surface roughness, the order in monomolecular film, wetting properties, and their stability aqueous electrolyte solutions investigated using atomic microscopy, infrared absorption spectroscopy, contact angle measurements. Direct performed with a noninterferometric bimorph apparatus, surfaces differently...
Changes in the contact angle between conjugated polymers surface poly(3-hexylthiophene) [P3HT] and poly(3,4-ethylenedioxythiophene) (PEDOT) upon electrochemical doping−dedoping aqueous electrolyte were determined situ using a Wilhelmy plate tensiometer an cell. The hydrophobic P3HT was less oxidized state than neutral state; more hydrophilic PEDOT when neutral. tensiometry results good agreement with those measured by goniometry, further corroborated capillary rise doping fluid cell two...
We describe the synthesis of a series mono-, di-, and trisaccharide-functionalized alkanethiols as well formation fouling-resistant self-assembled monolayers (SAMs) from these. The SAMs were characterized using ellipsometry, wetting measurements, infrared reflection-absorption spectroscopy (IRAS). show that structure carbohydrate moiety affects packing density this also alters alkane chain organization. Upon increasing size sugar moieties (from mono- to di- trisaccharides), structural...