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Peptide materials based on the aggregation of polyphenylalanine conjugates containing gadolinium complexes and acting as potential contrast agents (CAs) in magnetic resonance imaging (MRI) are described. Monomers contain two (F2) or four (F4) phenylalanine residues for self‐assembly, a chelating agent, 1,4,7,10‐tetraazacyclododecane‐N,N,N,N‐tetraacetic acid (DOTA) or diethylenetriaminepentaacetic...
New mixed nanoparticles were obtained by self‐aggregation of two amphiplic monomers. The first monomer (C18)2L5‐Oct contains two C18 hydrophobic moieties bound to the N‐terminus of the cyclic peptide octreotide, and spaced from the bioactive peptide by five units of dioxoethylene linkers. The second monomer, (C18)2DTPAGlu, (C18)2DTPA or (C18)2DOTA, and the corresponding Gd(III) complexes, contains...
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