[Syntheses and spectral characterization of low-molecular-weight chitosan-Ce(III) complexes].

The low-molecular-weight chitosan-Ce(III) complexes were synthesized at pH value 1-2 and characterized by UV spectrum, fluorescence spectrum, FTIR spectrum and 1H NMR spectrum. Its coordination mechanism was also investigated. The results showed that Ce(III) was coordinated with -OH group instead of -NH2 group of low-molecular-weight chitosan.

[Study on the spectroscopy and electrochemistry of the combination between samarium (III) ion probe and bovine serum albumin].

The synthesis of solid compound of bovine serum albumin (BSA) with samarium (III) ion was studied. The FTIR spectrum shows that samarium (III) ion forms high sensitivity compound with BSA's oxygen in hydroxyl and nitrogen in amidocyanogen or amide groups. The ultraviolet spectrum shows that samarium (III) ion binds directly with residue of tyrosine.