title: A rhodamine B-based fluorescent sensor toward highly selective mercury (II) ions detection.
abstract: 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 Hg(2+), 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.
authors.affiliation: Chemistry College, Dalian University of Technology, Dalian 116024, China. Electronic address: jiaoyang@dlut.edu.cn.
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiao
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Chemistry College, Dalian University of Technology, Dalian 116024, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Zhou
mesh_terms: D005456:Fluorescent Dyes / Q000737:chemistry*; D057230:Limit of Detection; D008628:Mercury / Q000032:analysis* / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010795:Phthalic Acids / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D005456:Fluorescent Dyes; D010795:Phthalic Acids; D012235:Rhodamines; C102688:5-aminoisophthalic acid; D008628:Mercury; C029773:rhodamine B
keywords: Fluorescent Sensor; Mercury (II) Ions; Rhodamine