Visualization of Photoresponsive Monolayers Comprised of Photochromic Polymers.

Properties and applications of photoresponsive polymers

Several proposals to construct artificial photoresponsive polymer systems have been described. chromophores in the backbone reversibly changed the conformation by ultraviolet light irradiation(410 > > 350 nm), which causes the trans to cis isomerization of the chromophores. Aqueous solutions of poly(N-isopropylacrylamide) with pendant azobenzene chromophores showed a photostimulated phase separ...

Langmuir monolayers of mesomorphic monomers and polymers

2014 Monolayers of organic compounds which exhibit liquid crystalline behaviour in their bulk phases have been formed at an air-water interface. All selected polymers and monomers were of the same basic structure with a rigid aromatic central core containing several hydrophilic ester groups and two or more aliphatic hydrocarbon chains. Spreading was satisfactory in most cases and the surface pr...

Photocontrolled Reversible Dimensional Changes of Microstructured Photochromic Polymers

Photoresponsive Ion Extraction/Release Systems: Dynamic Ion Optodes for Calcium and Sodium Based on Photochromic Spiropyran

Photoresponsive ion extraction/release systems (PRIONERS) represent a highly interesting tool for the localized and time-controlled chemical perturbation of biological materials. We report here on our first results on phototriggered calcium and sodium exchanging materials. Such materials exist in two distinct states ("on" and "off"), depending on the wavelength of illumination. We used a combin...

Birefringence Properties and Surface Relief Grating Formation on Methylacrylate Polymers with Photochromic Side Chains

We have studied light-induced birefringence (LIB) and surface relief grating (SRG) formation in the series of methylacrylate polymers. The effect of material structure such as length of photochromic side chain, glass transition temperature and molecular structure of azo units on LIB and SRG are studied. The optical formation of self-induced SRG on films of these materials is also presented.