Studies on Preparation and Fluorescent Properties of a Novel Photo-Sensitive Nanoparticle Composed of Europium Ion and Cinnamic Acid Derivative~a

摘要

A novel fluorescent and photo-sensitive nanoparticle was self-assembled from an europium-based random copolymer, europium coordinated poly(methylacrylic acid)-co-poly(cinnamylacrylate) (PMCFA-Eu~(3+)), which was synthesized from methylacrylic acid (MAA), and Eu~(3+)-cinnamyl acrylate derivative (CFA) by radical polymerization. DLS and TEM results indicatedthe formation of spherical nanoparticles with 120 nm in diameter. The PMCFA-Eu~(3+)complexshowed stronger fluorescence than Eu~(3+),indicating the effective energy transferred from theligand to Eu~(3+).Moreover, the photo-crosslinkingof the cinnamate groups induced a decrease in thediameter and an increase in the fluorescentproperties of the PMCFA-Eu~(3+)nanoparticles. Thisfunctional nanoparticle might be useful as acarrier and a fluorescence probe in biomedicaland fluorescent fields.