Hiroshi Ito, Reinhold Schwalm
JES
The effect of elevated pressure on backbone conformation in a series of symmetrically substituted poly(di-n-alkylsilanes) has been investigated using UV-vis, Raman, and FTIR spectroscopy. Initially at low pressures, lateral compression occurs, which gives rise to gross changes in conformation, e.g., a change from a helical to a planar zigzag structure. This is manifested by a dramatic red shift of UV absorption bands by as much as 50 nm. At high pressures axial compression occurs, which leads to a geometrical distortion of the σ-conjugated backbone, which in turn causes a reversible continuous blue shift of UV absorption bands. Raman measurements at ambient and elevated pressures support these results. © 1991, American Chemical Society. All rights reserved.
Hiroshi Ito, Reinhold Schwalm
JES
D.D. Awschalom, J.-M. Halbout
Journal of Magnetism and Magnetic Materials
William G. Van der Sluys, Alfred P. Sattelberger, et al.
Polyhedron
I.K. Pour, D.J. Krajnovich, et al.
SPIE Optical Materials for High Average Power Lasers 1992