کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
750755 | 1462080 | 2015 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A novel reversible colorimetric chemosensor for rapid naked-eye detection of Cu2+ in pure aqueous solution A novel reversible colorimetric chemosensor for rapid naked-eye detection of Cu2+ in pure aqueous solution](/preview/png/750755.png)
A novel water-soluble polymer P(NIPAM-co-RhBBA) containing pendant rhodamine B-based dyes is successfully synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. P(NIPAM-co-RhBBA) in pure aqueous solution exhibits highly sensitive and selective detection of Cu2+ ions accompanied with a remarkable color change from colorless to purple within 20 s, which can be monitored directly by naked eyes. The on-off-on color switching behavior upon adding Cu2+ and EDTA ions alternately to P(NIPAM-co-RhBBA) aqueous solution for several successive cycles demonstrates a superior reversible colorimetric chemosensor for further applications. Furthermore, the low-cost test strips are fabricated using P(NIPAM-co-RhBBA) for convenient and efficient detection of practical Cu2+ ions in real water samples.
Journal: Sensors and Actuators B: Chemical - Volume 211, May 2015, Pages 325–331