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论文类型：期刊论文

发表时间：2018-01-01

发表刊物：Talanta

收录刊物：PubMed、SCIE、EI

卷号：184

页面范围：143-148

ISSN号：1873-3573

关键字：Fluorescent sensor; Rhodamine B; Cu2+ ions

摘要：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. Copyright © 2018 Elsevier B.V. All rights reserved.