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论文类型：期刊论文

发表时间：2016-04-01

发表刊物：TALANTA

收录刊物：SCIE、EI、PubMed

卷号：150

页面范围：14-19

ISSN号：0039-9140

关键字：Fluorescent Sensor; Rhodamine; Mercury (II) Ions

摘要：This work presented the design, syntheses and photophysical properties of a rhodamine B-based fluorescence probe, which exhibited a sensitive and selective recognition towards mercury (II). The chemosensor RA (Rhodamine-amide-derivative) contained a 5-aminoisophthalic acid diethyl ester and a rhodamine group, and the property of spirolactone of this chemosensor RA was detected by X-ray crystal structure analyses. Chemosensor RA afforded turn-on fluorescence enhancement and displayed high brightness for Hg2+, which leaded to the opening of the spirolactone ring and consequently caused the appearance of strong absorption at visible range, moreover, the obvious and characteristic color changed from colorless to pink was observed. We envisioned that the chemosensor RA exhibited a considerable specificity with two mercury (II) ions which was attributed to the open of spirolactone over other interference metal ions. (C) 2015 Elsevier B.V. All rights reserved.