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Guanidine Cellulose for Biocompatible Nanoparticles Phase Transfer

Abstract:

The introduction of 1, 1, 3, 3-tetramethyl guanidine groups with degree of substitution of 0.18 into cellulose can tailor the solubility of cellulose in water, which leads to a general and robust development of biopolymer-based biodegradable and biocompatible material for phase-transfer of hydrophobic biocompatible nanoparticles to aqueous solution. Fourier transform infrared spectroscopy shows the successful ligand exchange between small molecules and 1, 1, 3, 3-tetramethyl guanidine functionalized cellulose during the phase transfer. Transmission electron microscope images of the original and transferred nanoparticles confirm the success of the phase transfer without obvious agglomeration occurred. The transferred nanoparticles possessed their own unique properties such as surface plasmon resonance, magnetism, up-conversion fluorescence.