preparation, characterization and photo-inactivation of cellulose nanocrystals impregnated with meso-tetrakis(4-nitrophenyl)porphyrin

In this study, cellulose nanocrystals (cnc) was prepared and mesotetrakis(4nitrophenyl)porphyrin (tnpp) was immobilized on it. the product was identified by techniques of uv-vis, fourier transform infrared (ftir), diffuse reflectance uvvis spectroscopy (drs), energydispersive xray spectroscopy (edx) and scanning electron microscopy (sem). the effect of an amount of a loaded porphyrin compound containing the nitro group on cnc was investigated against a typical gram negative bacterium, pseudomonas aeruginosa, and a typical gram positive bacterium, bacillus subtilis, under visible light irradiation. the results indicated that cnc incorporated with 14.9% tnpp has a good effect on the photoinactivation of p. aeruginosa and can be used in the textile, biomedicine, biomaterials engineering, membranes and polymer nanocomposites.