A Luminescent Thermometer Based on Linearly Thermo-responsive Copolymer and Polyoxometalates
A Luminescent Thermometer Based on Linearly Thermo-responsive Copolymer and Polyoxometalates
复制标题
基于线性热响应共聚物和多金属氧酸盐的发光温度计
DOI：
10.1007/s10118-019-2287-z
复制
发表时间：
2019
影响因子：
4.3
通讯作者：
Jie Zhang
中科院分区：
文献类型：
--
作者：
Jinlong Zhang;Junyan Tan;Xinhua Wan;Jie Zhang
以聚乙二醇-b-聚（丙烯酰胺-丙烯腈-甲基丙烯酸二甲氨基乙酯）嵌段共聚物（PEO 113-b-P（AAm 264-co-AN 112-co-DMA 8））和含铕的聚氧乙烯酸盐（Eu-POM）为基，成功构建了一种新型的可开关发光温度计。通过RAFT合成的共聚物在水介质中表现出对温度变化的线性响应，这与具有特定上临界溶解温度（UCST）的不带电共聚物P（AAm-co-AN）有很大不同。Eu-POM通过静电相互作用被包裹在温敏嵌段的周围，由于共聚物对温度变化的敏感性，其发光可以被精细地调节。在冷水中，POM被捕获在高度疏水的核中，表现出强烈的发射。随着温度的升高，发光强度逐渐降低，并与温度呈线性相关。当络合物溶液冷却后，发光也可以完全恢复。这种温度-发光相关性可用于大量试验，显示了在温度计中的潜在应用。
A novel switchable luminescent thermometer based on thermo-responsive triblock copolymer poly(ethylene glycol)-b-poly(acrylamide-co-acrylonitrile-co-dimethylaminoethylmethacrylate) (PEO113-b-P(AAm264-co-AN112-co-DMA8)) and Eu-containing polyoxometalate (Eu-POM) was successfully constructed. The copolymer synthesized by RAFT exhibited a linear response to temperature variations in aqueous media, which was quite different from the uncharged copolymer P(AAm-co-AN) having a specific upper critical solution temperature (UCST). Eu-POM was surrounded around thermo-responsive blocks through electrostatic interactions, and its luminescence could be finely tuned due to the sensitivity of copolymer to the temperature variation. In cold water, POMs were trapped in highly hydrophobic cores, exhibiting an intense emission. With the upraising of temperature, the emission intensity presented a gradual decrease and showed a linear correlation with temperature. When the complex solution cooled down, the luminescence could also be perfectly restored. This temperature-luminescence correlation could be held for numerous trials, showing a potential application in thermometer.