期刊
TALANTA
卷 184, 期 -, 页码 143-148出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2018.01.073
关键词
Fluorescent sensor; Rhodamine B; Cu2+ ions
资金
- National Natural Science Foundation of China [21501020]
- China Postdoctoral Science Foundation [2015M571295]
- Fundamental Research Funds for the Central Universities [DUT16LK11]
A novel rhodamine based sensor RBH was developed and synthesized by rhodamine B with 3-methyl-2-benzothiazolinone hydrazone, which exhibited high selectivity and sensitivity for sensing Cu2+ ions in the presence of other important relevant metal ions in aqueous acetonitrile. As an off-on fluorescent sensor, RBH exhibited a UV vis absorption increase at 570 nm and a 132-fold significant fluorescence enhancement at 580 nm with a distinct color change from colorless to purple upon the addition of Cu2+ ions. The fluorescence intensity of RBH is linear with the Cu2+ ions concentration with low limit of detection. Furthermore, the sensor RBH has been successfully utilized for fluorescence imaging of Cu2+ ions in living cells. The sensor could potentially recognize Cu2+ ions in biological system.
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