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

✍ Scribed by Dongjian Shi; Xiaoya Liu; Fei Xiang; Mingqing Chen; Cheng Yang; Mitsuru Akashi

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 507 KB
• Volume: 210
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200900209

✦ Synopsis

Abstract

A novel fluorescent and photo‐sensitive nanoparticle was self‐assembled from an europium‐based random copolymer, europium coordinated poly(methylacrylic acid)‐co‐poly(cinnamyl acrylate) (PMCFA‐Eu^3+^), which was synthesized from methylacrylic acid (MAA), and Eu^3+^‐cinnamyl acrylate derivative (CFA) by radical polymerization. DLS and TEM results indicated the formation of spherical nanoparticles with 120 nm in diameter. The PMCFA‐Eu^3+^ complex showed stronger fluorescence than Eu^3+^, indicating the effective energy transferred from the ligand to Eu^3+^. Moreover, the photo‐crosslinking of the cinnamate groups induced a decrease in the diameter and an increase in the fluorescent properties of the PMCFA‐Eu^3+^ nanoparticles. This functional nanoparticle might be useful as a carrier and a fluorescence probe in biomedical and fluorescent fields.

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