Orientation induced chromism in poly(methylhexysilane)

Optical properties of the thin films of poly(methylpentoxysilane) homopolymers and copolymers

“…2 shows the thickness dependence of the UV spectra of the spin-cast film on quartz. A broad absorption band is observed around 300 nm for the thick film of PMHS, whereas a new peak around 340 nm appeared for the thin film, similar to the results reported by Kaito et al [18,24]. The new peak is attributed to the more extended conformation, which might be caused by the increase in the population of the disoid and trans conformations as reported in the study of Chunwachirasiri [23].…”

“…Such a method is easy to produce highly oriented thin films and the growth directions of the polymers were controlled by the substrates. The surface of the crystal substrate and highly oriented polypropylene (PP) [17] or polytetrafluoroethylene (PTFE) film [18] is commonly used as oriented substrates.…”

XPS characterisation of plasma treated and zinc oxide coated PET

“…A photo-yellowing of the PET polymer occurs leading to the deterioration of its physical properties [10][11][12][13][14][15][16][17], so it should be protected. Among the methods to photo-stabilise the PET efficiently, the covering of its surface by a thin ceramic layer of zinc oxide is a very suitable one.…”

Oriented Poly(dialkylstannane)s

“…Here, we present the formation of oriented structures of poly(dialkylstannane)s, encouraged by the reported uniaxial orientation of polysilanes, [14][15][16][17][18][19][20][21] bearing in mind, of course, that parameters that influence orientation processes, such as melting temperature, solubility, and chain rigidity differ for polysilanes and polystannanes. A variety of techniques have been developed to induce orientation of polymer molecules, which is crucial to investigate and exploit the anisotropic mechanical, optical, and electronic properties of the macromolecules.…”