number of zinc(II)–dipicolylamine complexes beyond 25% had a negative impact on the limit of detection and the optical response. Transmission electron microscopy provided evidence that the changes of the nanoparticle properties observed in the presence of the phosphates were due to a nanoparticle crosslinking, consistent with the preferred binding mode of zinc(II)–dipicolylamine complexes with phosphate
The synthesis of amino acid based dendrimers 25 (fifth generation, 32 endgroups), 30 (fourth generation, 81 endgroups), chiral dendrimer 23 (third generation, 8 endgroups) as well as core-modified dendrimers 34 and 38 by the convergent method is described. The amino acid building blocks are derived from hydroxybenzoic acid derivatives and amino alcohol derivatives, and access to a considerable molecular
[EN] VISCOSUPPLEMENTARY MATERIALS<br/>[FR] MATIÈRES DE VISCOSUPPLÉMENTATION
申请人:FLEX BIOMEDICAL
公开号:WO2012097078A2
公开(公告)日:2012-07-19
A polymer includes at least one of the following repeat units: where R1 and R2 are either the same or different and are individually H, COOR3, COCH3, CONHR4, OR4 or SR4; wherein the polymer has a number average molecular weight from 1,500,000 g/mol to 2,500,000 g/mol; and with the proviso that both R1 and R2 are not H. Such polymers have a variety of uses including injection into a synovial joint for chondroprotection and as a viscosupplement.