A great deal of research on polymers over the past two decades has been focused on the development of stimuli-responsive polymers to obtain materials able to respond to specific surroundings. In this paper, an overview is presented of the concepts, behavior and applicability of these “smart polymers”. Polymers that are temperatureor pH-sensitive are discussed in detail, including the response m...

This paper focuses on finding criteria to choose the best combination between a pH sensitive material and detection method. Various pH sensitive polymers and measurement methods exist. However, some measurement methods are not sensitive enough to measure pH in the presence of salt and this need to be investigated further. This paper discusses various pH sensitive materials and detection methods...

Stimuli-responsive materials in general and pH-responsive polymers particular have gained increasing interest during the last two decades. Their unique properties, which arise from their ability to exhibit sharp reversible changes response environmental pH conditions, made them suitable for various applications such as drug delivery specific body-site targeting, sensing actuation, membrane func...

This paper reviews current state-of-the-art methods of measuring pH levels that are based on polymer materials. These include polymer-coated fibre optic sensors, devices with electrodes modified with pH-sensitive polymers, fluorescent pH indicators, potentiometric pH sensors as well as sensors that use combinatory approach for ion concentration monitoring.

pH sensitive dodecyl-modifi ed poly(allylamine)s associate with superoxide dismutase (SOD) in aqueous solutions at pH 5.5 and 7.4. The bound SOD can be released completely at pH 10.0 due to the self-aggregation of the polymers. In a mixture of water and organic solvent, the hydrophobic groups of the polymers are exposed. During the process of removing the organic solvent, the polymers increase ...

The major challenge in cancer therapy is to efficiently translocate drug molecules into cancer tumors without doing any damage to healthy tissues. Since there exist pH gradients between tumor and normal tissues, pH-sensitive materials may have great potential to overcome such challenge. Here, we report one new type of pH-responsive drug delivery system where pH-sensitive polymers are introduced...

Application of conducting polymers with additional functional groups for a solid contact formation and photocurable membranes as sensitive elements of solid-state chemical sensors is discussed. Problems associated with application of UV-curable polymers for sensors are analyzed. A method of sensor fabrication using copolymerized conductive layer and sensitive membrane is presented and the proof...

It is attractive to control the properties of macro objects and films by employing simple nanolayer composites, as in the case of nanoarchitectured Layer-by-Layer (LbL) coating. In this paper, we use chitosan as a surface-based pH buffer to protect adsorbed supramolecular fibres from pH-mediated disassembly. Protons are generated on a titania surface under illumination at 405 nm leading to an a...