The aim of this study was to improve the colloidal stability, decrease unspecific interactions with cells and blood components of a novel gene delivery system composed of epsilon-caprolactone and quaternized epsilon-caprolactone. For this purpose, diblock 50/50 copolymer was used to generate complexes with DNA by either the solvent evaporation technique and by dialysis. The size, surface charge...

Quaternized (QC) and cross-linked/quaternized (CQC) cellulose hydrogels were prepared by cross-linking native cellulose with epichlorohydrin (ECH), with subsequent grafting of glycidyl trimethyl ammonium chloride (GTMAC). Materials characterization via carbon, hydrogen and nitrogen (CHN) analysis, thermogravimetric analysis (TGA), and Fourier transform infrared (FTIR)/13C solid state NMR spectr...

The novel pyridine bearing schiff base substituted metal-free (9), zinc(II) phthalocyanine (10), and its quaternized derivative (11) were designed synthesized. These phthalocyanines fully characterized by spectroscopic methods (FT-IR, UV-Vis, MALDI-TOF, 1H NMR). photo-physicochemical properties of these investigated in both DMSO DMF for 10 aqueous solution 11. addition Schiff groups as peripher...

Abstract Superabsorbent hydrogels were prepared from biodegradable material, where the matrix was cross-linked cellulose and carboxymethyl reinforced by quaternized tunicate nanocrystals (Q-TCNCs). Due to large amount of hydrophilic groups on cellulose, Q-TCNCs, had excellent water absorption capacity. The equilibrium swelling ratio superabsorbent exceeded 500 g/g in deionized 120 even syntheti...