The effect of compression on the fluorescence and Raman spectra of poly(p-phenylene benzobisoxazole) (PBO) fibre and a PBO/amorphous nylon blend has been investigated qualitatively at various excitation wavelengths. A substantial red-shift in the fluorescence maxima is observed upon increasing pressure both in PBO fibres as well as in the PBO/amorphous nylon blend. The shift is consistent with that observed for aromatic molecular crystals. This observation strongly suggests that certain features in the fluorescence emission are due to interchain interactions.
Посилання на статтю:
Effects of pressure on the electronic spectroscopy of poly(p-phenylene benzobisoxazole) / M. Anne Leugers* and Steven M. Lefkowitz // Polymer. – 1994. – Vol 35. – P. 4235-4237.