Abstract
Stimuli-responsive nanoparticles with fluorescent cross-linked cores were prepared by in-situ Suzuki-coupling reactions of amino acid-based block copolymers using dithiophene- and fluorene-based diboronic acids. Block copolymers synthesized by RAFT polymerization of threonine-containing monomer and 4-bromophenyl vinyl sulfide were used for the self-assembly in a selective solvent and subsequent cross-linking reactions. The formation of stable core cross-linked nanoparticles with stimuli-responsive shell derived from threonine was confirmed by DLS, UV-vis, fluorescence, and CD measurements. Multi stimuli-responsive photophysical properties, depending on pH, salt, urea, and metal species, were evaluated in various organic and aqueous solvents. Figure 1
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