  A comparison of the secondary emission (photoluminescence) and Bragg
reflection spectra of photonic crystals (PC), namely, synthetic opals, opals
infiltrated by colloidal gold, glycine, and a complex of colloidal gold with
glycine is performed. The infiltration of colloidal gold and a complex of
colloidal gold with glycine into the pores of PC causes a short-wavelength
shift (about 5-15 nm) of the Bragg reflection and increases the intensity of
this band by 1.5-3 times. In photoluminescence, the infiltration of PC by
colloidal gold and colloidal gold with glycine suppresses the PC emission band
near 375-450 nm and enhances the shoulder of the stop-zone band of PC in the
region of 470-510 nm. The shape of the observed PC emission band connected with
defects in synthetic opal is determined by the type of infiltrates and the
excitation wavelength. Possible mechanisms of the effects are discussed.
