In this mini-review, we discuss multi-stimuli-responsive polymers, which exhibit upper critical solution temperature (UCST) behavior mainly in aqueous solutions, and focus on examples where counter ions, electricity, light, or pH influence the thermoresponsiveness of these polymers.

Near-infrared (NIR) fluorophores with pH-responsive properties suggest merits in biological analyses. This work establishes a general and effective method to obtain NIR emissive gold nanoclusters by introducing aliphatic tertiary amine (TA) groups into the ligands. Computational study suggests that emission is associated electronic structure change upon protonation deprotonation of TA groups. Photo-induced electron transfer between deprotonated surface Au-S motifs can disrupt radiative...

This study explores the synthesis and characterization of polyamide/biochar composites via in situ polymerization 12-aminolauric acid with varying biochar concentrations. The motivation behind this research is to enhance properties polyamide 12 (PA12) by integrating biochar, a sustainable material derived from biomass, improve both performance environmental impact. A detailed structure-property correlation analysis was conducted assess effects on PA12's morphology, mechanical behavior,...

A series of well-defined thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) macromonomers was prepared by reversible addition–fragmentation chain transfer (RAFT) polymerization followed aminolysis and nucleophilic Michael addition. 2-(Dodecylthiocarbonothioylthio)-2-methylpropanoic-2-phenoxyethyl ester (CTA) used as the RAFT agent to prepare six PNIPAM-CTA precursors with target degrees 20, 30, 40, 50, 60, 75. These NIPAM polymerizations were conducted in 1,4-dioxane proceeded good...

Isotactic triads are introduced into poly(dimethylaminoethyl methacrylate) (PDMAEMA) when a Lewis acid yttrium(III)trifluoromethanesulfonate, Y(OTf)3, is present during the ATRP polymerization. The changes in tacticities of polymers modest. However, tacticity affects phase separation process but different way two studied cases, at pH 8 and 9. pH, thus charge polymer, balance between electrostatic stereochemical effects. Upon chain collapse, zeta potential polymer decreases discontinuously 9,...

To evaluate the response of cells to boron nitride nanotubes (BNNTs) carrying fluorescent probes or drugs in their inner channel by assessment cellular localization cargo, evaluation vitro release and biological activity a drug (curcumin) loaded BNNTs.Cells treated with curcumin-loaded BNNTs stimulated lipopolysaccharide were assessed for nitric oxide stimulation IL-6 TNF-α. The trafficking two cell-permeant dyes non-cell-permeant dye within was imaged.BNNTs up 13 wt% fluorophores...

Abstract Low‐cost and high‐performance electronics based on synthetically simple materials are required to fuel the deployment of smart packaging wearable electronics. Metal phthalocyanines (MPcs) promising semiconductors for use in n‐type organic thin film transistors (OTFTs) but often require high operating voltages. The first silicon phthalocyanine‐based OTFT with a polymer dielectric is reported as an alternative traditional metal oxide dielectrics. Incorporating poly(methyl...

Journal Article Site-Directed Mutagenesis of a Thermostable α-Amylase from Bacillus stearothermophilus: Putative Role Three Conserved Residues Get access Mauno Vihinen, Vihinen 2 *Department Biochemistry, University Turku20500 Turku, Finland 2To whom correspondence should be addressed: M. Department SF-20500 Finland; Tel. +358-21-6335758; Telefax: +358-21-331167; Earn/Bitnet Address: MVIHINEN@FINABO Search for other works by this author on: Oxford Academic PubMed Google Scholar Pauli Olikka,...

Selective targeting of diseased cells can increase therapeutic efficacy and limit off-target adverse effects. We developed a new tool to selectively perforate living with functionalized gold nanoparticles (AuNPs) near-infrared (NIR) femtosecond (fs) laser. The receptor CD44 strongly expressed by cancer stem was used as model for selective targeting. Citrate-capped AuNPs (100 nm in diameter) 0.01 orthopyridyl-disulfide-poly(ethylene glycol) (5 kDa)-N-hydroxysuccinimide (OPSS-PEG-NHS)...

Cationically modified chitosan derivatives exhibit a range of appealing characteristics, with particular emphasis on their antimicrobial potential across broad spectrum biomedical applications.

Aims: The isolated mouse and postmortem human retina can serve as a sensitive biosensor for preclinical drug testing. To facilitate testing with minimal amounts of potential molecules or nanostructures, we developed closed‐perfusion tERG setup. major challenge small perfusate volumes was the healthiness stability in prolonged experiments. Methods: We conducted ex vivo experiments using WT C57BL/6J Gnat1‐/‐ mouse, donor retinas (Lion's Eye Bank, Utah). punches were embedded specimen holder...

Aims: The isolated mouse and postmortem human retina can serve as a sensitive biosensor for preclinical drug testing. To facilitate testing with minimal amounts of potential molecules or nanostructures, we developed closed‐perfusion tERG setup. major challenge small perfusate volumes was the healthiness stability in prolonged experiments. Methods: We conducted ex vivo experiments using WT C57BL/6J Gnat1‐/‐ mouse, donor retinas (Lion's Eye Bank, Utah). punches were embedded specimen holder...

Abstract As the cost of electronics decreases, demand for short‐term and single‐use applications, such as smart packaging, increases. Consequently, there is significant need electronically active biodegradable materials to reduce environmental impact disposable electronic devices. A bilayer dielectric developed based on environmentally friendly, low‐cost solution‐processable polymers, fabricated by thermally crosslinking a toluene diisocyanate‐terminated polycaprolactone (TPCL) layer with...

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The predominant technique for producing 3D-printed structures of nanocellulose involves freeze-drying despite its drawbacks in terms energy consumption and carbon footprint. This study explores the less-energy-intensive drying approach by leveraging valorization forest residual streams. We utilized wood flour Kraft lignin as fillers to facilitate room-temperature nanocellulose-based 3D printed structures. Various ink formulations, integrating cellulose nanofibers, flour, lignin, were tested...

Recent advances in grafting from techniques have made it possible to produce hybrid materials montmorillonite clay by covalently polymers the surface of particles. In this article temperature and pH responsiveness a material consisting poly(dimethylaminoethyl methacrylate) (PDMAEMA) grafted is investigated differential scanning calorimetry, pressure perturbation calorimetry fluorescence spectroscopy. The phase transition affected not only aqueous medium, but also electrostatic interactions...

Polymerized ionic liquids (PILs) are a potential solution to the large-scale production of low-power consuming organic thin-film transistors (OTFTs). When used as device gating medium in OTFTs, PILs experience double-layer capacitance that enables thickness independent, low-voltage operation. PIL microstructure, polymer composition, and choice anion have all been reported an effect on performance, but better structure property relationship is still required. A library 27 well-defined,...

Abstract There is an increasing demand for low-cost and high-performance electronics which has stimulated a need new dielectric materials. We have developed facile synthesis of poly(2-(methacryloyloxy)ethyl trimethylammonium bis(trifluoromethylsulfonyl)azanide- ran -methyl methacrylate) (P(METATFSI-MMA)), polymeric ionic liquid that can be used as semiconducting single walled carbon nanotube (SWCNTs) thin film transistors (TFTs). The P(METATFSI-MMA) polymer was synthesized at both 35 62 mol%...