A G-rich nucleic acid-tethered acrylamide/N-isopropylacrylamide (NIPAM) copolymer is prepared. The nucleic acid-modified pNIPAM chains assemble, in the presence of K ions, into a stimuli-responsive G-quadruplex-crosslinked pNIPAM hydrogel undergoing cyclic and reversible solution/hydrogel/solid transitions. Addition of kryptofix [2.2.2], CP, to the K-stabilized G-quadruplex-crosslinked hydrogel...

The influence of homopolymer architecture on the properties polyion complex micelles is reported. Using a combination dynamic and static light scattering, authors show how only relevant in kinetically trapped states formed by electrostatic assembly poly(N-isopropyl acrylamide-block-styrene sulfonate) (p(NIPAM-b-SS) linear, 4-arm, 8-arm star quaternized poly(dimethyl amino ethyl acrylate) (PDMAE...

Microparticles consisting of the thermal responsive polymer N-isopropyl acrylamide (polyNIPAM), a metal ion-binding ligand and a fluorophore pair that undergoes fluorescence resonance energy transfer (FRET) have been prepared and characterized. Upon the addition of Cu(II), the microparticles swell or contract depending on whether charge is introduced or neutralized on the polymer backbone. The ...

The Front Cover shows the interplay between chemisorption of carbon monoxide probe molecules and diffusion through a porous catalyst with stimulus responsive polymeric brushes that can switch transfer process ON- OFF temperature. In their Research Article, M. J. Enes da Silva et al. showed on Polymer-Membrane-Catalyst Assembly (PCMA) system consisting PET membranes well-defined pore structure c...

Chemical cross-linking of gelatin is achieved using a thermosensitive reactive copolymer based on N-isopropylacrylamide (NIPAM). The copolymer bears 5 mol % acrylic acid units which form amide bonds with the amino groups of gelatin in the presence of a water-soluble carbodiimide. The cross-linking reaction occurs only below the LCST congruent with 34 degrees C (lower critical solution temperatu...

In this study, (3-mercaptopropyl) trimethoxysilane (MPTMS) modified silica nanoparticles (SiO2-MPTMS) were successfully prepared. The average size of SiO2-MPTMS was measured by Dynamic Light Scattering (DLS) as 341 nm in ethanol, while Scanning Transmission Electron Microscopy (STEM) analyzes confirmed that the nano-sized and revealed their shapes spherical. Then, 3D nanocomposite hydrogels pre...