The Preparation of Functionalized Crosslinked Macroporous Chitosan Microspheres and their Adsorption Properties for Bilirubin
(179–187)Macromolecular Symposia 297 #1 (2010)
Liping  et al of Nankai University, Tianjin University of Traditional Chinese Medicine and Haihe Hospital, China prepared glutaraldehyde cross-linked macroporous chitosan microspheres (CS) by inverse phase suspension reaction with sugar as porogenic agent. The microspheres were modified with different reagents of 1, 6 hexanediamine (HDA) and low generation polyamidoamine (PAMAM) dendrimers.  The results indicated all the modified CS microspheres were better than unmodified CS microspheres for bilirubin adsorption. CS-HDA has the best adsorption property even if the content of the amino groups was not very high.  (RDC 2/25/2011)

Ion Sequestration, Solvent Extraction and Antimicrobial Behavior of Quinoline Functionalized Chitosan
(118-127) Journal of Inorganic and Organometallic Polymers and Materials 21  #1 (2011)
Gaidhane et al, of India, Japan, China and US, prepared chemically modified chitosan incorporating amino quinoline by reacting 6-amino-2-chloroquinoline-3-carbaldehyde with chitosan.   It was found to have high selective and chelating efficiency towards transition metal ions at pH 1–8. Enhanced adsorption capacity and strong affinity for Cu2+ was observed as compared to Cd2+, Ni2+, and Co2+ at 4–6 pH.   The new chitosan-amino-quinoline derivative showed elevated potential as a good adsorbent, depolluting agent having selective memory for metal ions, and could be utilized especially for ion sequestration and solvent extraction.  (RDC 2/21/2011)