We report a facile and general strategy for enhancing the photostability of organic fluorophores for bioimaging applications. As a proof of concept, bright and robust fluorescence was observed in solid states of a well-defined synthetic polymer polycaprolactone consisting of di(thiophene-2-yl)-diketopyrrolopyrrole covalently linked in the middle of the polymer chain as a biocompatible and biore...

Design of polymer properties, especially the relation between tensile and dynamic moduli in terms of chain conformational statistics was considered. Data on new elastomer blends with gradient properties enabling mixing on the molecular level were analysed in parallel to classical commodity materials. A new model describing the rheological behaviour of immobilized biopolymers was developed and t...

Up to this point we have considered polymer chains in solvent at various concentrations. In dilute solution, we observed that the segmental density is localized around the center of mass of the coils; the local concentration gradient experienced by each chain drives the swelling of the coils. By contrast, in polymer melts, this swelling force is exactly cancelled by analogous forces exerted by ...

Infrared-visible sum frequency generation spectroscopy (SFG) was used to measure the interfacial concentrations of poly(methyl methacrylate) (PMMA)/polystyrene (PS) blends next to a sapphire substrate. The acid-base interactions of carbonyl groups of PMMA with the hydroxyl groups on the sapphire drive the interfacial segregation of PMMA next to the sapphire substrate. Using the shift of sapphir...

The solid state polymerization (SSP) of PET/PC reactive extrusion blends with and without cobalt catalyst at different polymer ratios was studied. Thermal and rheological evaluations were performed. DSC results showed changes in the PET’s T g , T ch , T m and X c . The melt flow rate (MFR) decreased for PET and the blends. The intrinsic viscosity increased. The variation in calorimetric and rhe...

Dependent on the surface chemistry of gold nanocrystals of equal metal core size, two morphological types of self-organized block copolymer-particle blends are observed: (1) the segregation of the nanocrystals to the interfacial areas or (2) the preferential uniform distribution within one of the respective polymer domains. The confinement of the nanocrystals to the narrow interfacial regions o...