title: Polysiloxane-based luminescent elastomers prepared by thiol-ene "click" chemistry.
abstract: Side-chain vinyl poly(dimethylsiloxane) has been modified with mercaptopropionic acid, methyl 3-mercaptopropionate, and mercaptosuccinic acid. Coordinative bonding of Eu(III) to the functionalized polysiloxanes was then carried out and crosslinked silicone elastomers were prepared by thiol-ene curing reactions of these composites. All these europium complexes could be cast to form transparent, uniform, thin elastomers with good flexibility and thermal stability. The networks were characterized by FTIR, NMR, UV/Vis, and luminescence spectroscopy as well as by scanning electron microscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. The europium elastomer luminophores exhibited intense red light at 617 nm under UV excitation at room temperature due to the (5)D0 →(7)F2 transition in Eu(III) ions. The newly synthesized luminescent materials offer many advantages, including the desired mechanical flexibility. They cannot be dissolved or fused, and so they have potential for use in optical and electronic applications.
authors.affiliation: Key Laboratory of Special Functional Aggregated Materials and Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, School of Chemistry and Chemical Engineering, Jinan 250100 (P.R. China), Fax: (+86) 531-88564464.
authors.forename: Yujing
authors.initials: Y
authors.lastname: Zuo
authors.forename: Haifeng
authors.initials: H
authors.lastname: Lu
authors.forename: Lei
authors.initials: L
authors.lastname: Xue
authors.forename: Xianming
authors.initials: X
authors.lastname: Wang
authors.forename: Lianfeng
authors.initials: L
authors.lastname: Wu
authors.forename: Shengyu
authors.initials: S
authors.lastname: Feng
mesh_terms: D057930:Click Chemistry; D020724:Elastomers / Q000138:chemical synthesis / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008163:Luminescent Measurements; D009682:Magnetic Resonance Spectroscopy; D056951:Photoelectron Spectroscopy; D012833:Siloxanes / Q000138:chemical synthesis / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D020724:Elastomers; D049408:Luminescent Agents; D012833:Siloxanes; D013438:Sulfhydryl Compounds; D005063:Europium
keywords: click chemistry; elastomers; europium; luminescence; silicon