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Hole-burning experiments in doped polymers under uniaxial and hydrostatic pressure

Authors
Journal
Journal of Luminescence
0022-2313
Publisher
Elsevier
Publication Date
Volume
36
Identifiers
DOI: 10.1016/0022-2313(87)90200-6

Abstract

Abstract The hole-burning technique makes possible the study of extremely small strain-induced shifts and broadenings of quasi-homogeneous optical lines of dye molecules in polymer matrices. The polymers polyethylene, polymethylmethacrylate and polystyrene were doped with free base phthalocyanine and investigated under unidirectional and hydrostatic pressure. Since the pertinent equations for pressure-induced shifts can be linearized at the small pressures used (≲0.1 MPa), one can calculate values for the hydrostatic compressibility ϰ if one assumes that a R −6-law governs the molecular interactions responsible for the solvent shift. The optically determined compressibility values agree with the mechanically measured values within 10–20%.

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