Release Time:2019-10-22  Hits:

Indexed by: Journal Article

Date of Publication: 2018-01-01

Journal: Talanta

Included Journals: EI、SCIE、PubMed

Volume: 184

Page Number: 143-148

ISSN: 1873-3573

Key Words: Fluorescent sensor; Rhodamine B; Cu2+ ions

Abstract: 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.