Anionic dendrimers

Keywords. Calcium carbonate. Mineralization, Hyperbranched polymer, Supramolecular assembly. Anionic dendrimer... 

Anionic Dendrimer for Calcium Carbonate Thin Films Formation 155... 

Anionic Dendrimer for Caicium Carbonate Thin Films Formation... 

For some examples, see e.g. (a) Hogan CF, Harris AR, Bond AM et al (2006) Electrochemical studies of porphyrin-appended dendrimers. PhysChemChemPhys 8 2058-2065 (b) Jang W-D, Nishiyama N, Zhang G-D et al (2005) Supramolecular nanocarrier of anionic dendrimer porphyrins with cationic block copolymers modified with polyethylene glycol to enhance intracellular photodynamic efficacy. Angew Chem Int Ed 44 419 -23 (c) Loiseau F, Campagna S, Hameurlaine A et al (2005) Dendrimers made of porphyrin cores and carbazole chromophores as peripheral units. Absorption spectra, luminescence properties, and oxidation... 

Naka K, Chujo Y. Effect of anionic dendrimers on the crystallisation of calcium carbonate in aqueous solution. C R Chimie 2003 6 1193-1200. 

Figure 53 BioD of L-lysine dendrimers (left) cationic dendrimer (black bar G3, white bar G4, gray bar o-lysine G4) (right) anionic dendrimer (black bar G3 benzene-4-sulfonate (BS), dark gray bar G4 BS, light gray bar G4 benzene-3,5-disulfonate (BDS), white bar G4 succinate). Reproduced with permission from Kaminskas, L. M. Boyd, B. J. Karellas, P. etal. Mol. Pham. 2007,4,949 and Boyd, B. J. Kaminskas, L. M. Karellas, P. etal. Mol. Pham. 2006, 3, 614. Copyright 2006 American Chemical Society.

Fig. 3 Polyanionic dendrimers interacting with histone proteins, (a) Molecular structure of the first generation polyanionic dendrimer. (b) Confocal scanning niit scope images shown the co-localization of poly anionic dendrimer (5, red) with histone H4 proteins (green), (c) Isothermal titratimi graph shows the strong interaction between histone HI with 5. (d) Spectral analysis of the 5/histones...

Hussain, M., Shchepinov, M., Sohail, M., Benter, I. E, Hoffins, A. J., Southern, E. M., and Akhtar, S. 2004. A novel anionic dendrimer for improved cellular delivery of antisense oUgonucleotides. / Control Release 99(1), 139-155. 

Crystallization of CaCOj with the Anionic PAMAM Dendrimers... 

The complexes of anionic starburst dendrimers with calcium ions are considerably stronger for higher generations than for lower generations. The particle... 

Anionic poly(amidoamine) (PAMAM) dendrimer was selected as a model of the soluble acidic-rich proteins to prepare CaC03 film on a poly(ethylenimine) film [49]. The CaCOj/polylethylenimine) composite film was obtained in the... 

Fig. 11a,b. Binding affinities of IgG, IgM, and the antibody dendrimer (Gl) with the cationic porphyrin (TMPyP) (a) and those with the anionic porphyrin (TCPP) (b) estimated by ELISA... 

Fig. 12a,b. The sensorgrams for the binding of the antibody dendrimer (a) or IgG (b) to the anionic porphyrin immobilized onto the surface of the sensor chip. Phosphate borate buffer (0.1 M, pH 9.0) was used. TCPP was immobilized via hexamethylenediamine spacer onto the sensor chip and then a solution of IgG or the dendrimer was injected to the flow cell. After 60 s from the injection of the antibody solutions, flow ceU was filled with buffer... 

Host-guest systems made from dendritic materials have potential in the areas of membrane transport and drug delivery [68, 84, 85]. In a recent report [136] Tomalia and coworkers investigated structural aspects of a series of PAM AM bolaamphiphiles (e.g., 50) with a hydrophobic diamino do decane core unit. Fluorescence emission of added dye (nile red) was significantly enhanced in an aqueous medium in the presence of 50 unlike the cases when 51 and 52 were added (Fig. 23). Addition of anion surfactants to this mixture generated supramolecular assemblies which enhanced their ability (ca.by 10-fold) to accommodate nile red (53). Further increase in emission was noted by decreasing the pH from the normal value of 11 for PAMAM dendrimers to 7. At lower pH values the... 

Polystyrene/polyethylene oxide dendrimers were prepared by ATRP using tri- and tetra (bromomethyl) benzene as the initiators [207]. Each bromine end-group of the resulting stars was transformed first to two - OH groups and subsequently to potassium alcholate, as shown in Scheme 114. These - OK sites served to initiate the anionic polymerization of EO. The synthesized dendritic copolymers were found to display monomodal and narrow molecular weight distribution. 

---