Polysaccharide films containing chitosan, methylcellulose, and a mixture of these polysaccharides in various ratios were prepared and modified with meso-tetrakis(4-sulfonatophenyl)porphyrin in an aqueous medium at pH 7. The modified films were compared with the initial films using spectroscopic methods and microscopic imaging. Electronic (UV-vis absorption, electronic circular dichroism (ECD)) and vibrational (FTIR and Raman) spectra showed that the porphyrin macrocycles had a strong affinity toward chitosan and did not interact with the methylcellulose. The total porphyrin uptake depended on the chitosan: methylcellulose ratio and pure methylcellulose films did not retain porphyrin macrocycles. ECD measurements detected the presence of optically active porphyrin species bound to the films. SEM and AFM images confirmed that the porphyrin macrocycles caused structural changes on the film surface and within the film layer.

• MeSH
• absorpce MeSH
• biokompatibilní materiály chemická syntéza   MeSH
• chitosan chemie   MeSH
• cirkulární dichroismus MeSH
• koncentrace vodíkových iontů MeSH
• lékové transportní systémy metody   MeSH
• methylcelulosa chemie   MeSH
• mikroskopie elektronová rastrovací MeSH
• molekulární struktura MeSH
• porfyriny chemie   MeSH
• Ramanova spektroskopie MeSH
• spektroskopie infračervená s Fourierovou transformací MeSH
• voda MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• biokompatibilní materiály MeSH
• chitosan MeSH
• meso-tetrakis(4-sulfonatophenyl)porphyrin MeSH Prohlížeč
• methylcelulosa MeSH
• porfyriny MeSH
• voda MeSH