eLABa objektas:   "Opalo-geležies porfirino hibridinių darinių optinių savybių tyrimas", 2008,D:20080924:184857-77651
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URL nuoroda http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184857-77651
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Institucija Vilniaus pedagoginis universitetas
Mokslo kryptis 02 P - Fizika
Atsakomybė Pipiraitė, Marija - Magistro baigiamojo darbo autorius
Bondarenko, Vladimiras - Magistro baigiamojo darbo vertinimo komisijos pirmininkas
Banėnienė, Milia - Magistro baigiamojo darbo vertinimo posėdžio sekretorius
Vaišnoras, Rimantas - Magistro baigiamojo darbo vertinimo komisijos narys
Audzijonis, Algirdas - Magistro baigiamojo darbo vertinimo komisijos narys
Rimeika, Alfonsas - Magistro baigiamojo darbo vertinimo komisijos narys
Svirskas, Kęstutis - Magistro baigiamojo darbo vertinimo komisijos narys
Lazauskaitė, Roma - Magistro baigiamojo darbo vertinimo komisijos narys
Udris, Arvydas - Magistro baigiamojo darbo vertinimo komisijos narys
Lazauskas, Valentinas - Magistro baigiamojo darbo vertinimo komisijos narys
Rėza, Alfonsas - Magistro baigiamojo darbo vadovas
Audzijonis, Algirdas - Magistro baigiamojo darbo recenzentas
Vilniaus pedagoginis universitetas - Mokslinį laipsnį teikianti institucija
Antraštė (-ės) Opalo-geležies porfirino hibridinių darinių optinių savybių tyrimas
Investigation of optical properties of opal-iron porphyrin hybrid samples
Santrauka [EN]

In this work transmission optics of opal photonic crystals and infiltrated with iron porphyrin was studied. Work analyses synthetic opal crystals grown by means of sedimentation from the spheres of SiO2. Samples were 0.9 mm thick, and their surfaces planes were parallel (111) to crystallographic planes. In these samples, the stop band due to Bragg reflection from the (111) plane was observed in the spectral region of 0.45-0.7 µm at angles of light incidence. Iron porphyries FeTTPS magnetic circular dichroism was also investigated. Synthetic opal crystals composed of silica spheres were infiltrated with (c=10 mM, pH=6.8) buffered phosphate solution of iron porphyrin. In optical studies the FeTPPS-impregnated opal samples were immersed in hexane solution to vary average refractive index of composite system and to control the mutual positions of the opal stop band and absorption bands of FeTPPS. FeTPPS magnetic circular dichroism spectra dependency on opal stop band position was noted.

The experimental opal transmission spectra date were analyzed in which the optical response of the opal and infiltrated with iron porphyrin was calculated by using a Bragg’s law and it was found that spacing between adjacent [111] lattice planes d is 254.95 nm, opal crystal composed of silica spheres of diameter is 312 nm and average refractive index of composite system – 1.35.

Raktažodžiai: opal, FeTTPS, opal-FeTTPS