TY - JOUR
T1 - A Rhodamine-naphthalimide conjugated chemosensor for ratiometric detection Hg2+ in actual aqueous samples
AU - Xu, Nai Zhang
AU - Liu, Meng Meng
AU - Ye, Min An
AU - Yao, Yue Wei
AU - Zhou, Yi
AU - Wu, Guan Zhi
AU - Yao, Cheng
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - A novel chemosensor (RSNA) based on 1,8-naphthalimide fluorescent group and Rhodamine B was designed and synthesized for sensing Hg2+. As a ratiometric chemosensor, the probe system exhibits high affinity for Hg2+ based on fluorescence resonance energy transfer (FRET) mechanism. When RSNA interacts with Hg2+ in actual medium, accompanied by a significant color change from colorless to pink, and a light to orange fluorescence change. Meanwhile, RSNA shows a typical FRET signal from the 1,8-naphthalimide group to the Rhodamine group, a new emission peak appears at 585 nm and the emission peak at 381 nm decreases in the fluorescence spectrum. In addition, upon interaction with Hg2+, RSNA showed a 1:1 stoichiometry for the complex, the mechanism of interaction between RSNA and Hg2+ was also verified by ESI-MS, fluorescence and UV–vis spectra. Importantly, studies reveal that RSNA could be used for ratiometric detecting Hg2+, and a low detection limit of 0.059 μM in actual medium. Futher, the probe was suitable for sensing Hg2+ in river water due to its real-time response, high recovery rate, and anti-interference property.
AB - A novel chemosensor (RSNA) based on 1,8-naphthalimide fluorescent group and Rhodamine B was designed and synthesized for sensing Hg2+. As a ratiometric chemosensor, the probe system exhibits high affinity for Hg2+ based on fluorescence resonance energy transfer (FRET) mechanism. When RSNA interacts with Hg2+ in actual medium, accompanied by a significant color change from colorless to pink, and a light to orange fluorescence change. Meanwhile, RSNA shows a typical FRET signal from the 1,8-naphthalimide group to the Rhodamine group, a new emission peak appears at 585 nm and the emission peak at 381 nm decreases in the fluorescence spectrum. In addition, upon interaction with Hg2+, RSNA showed a 1:1 stoichiometry for the complex, the mechanism of interaction between RSNA and Hg2+ was also verified by ESI-MS, fluorescence and UV–vis spectra. Importantly, studies reveal that RSNA could be used for ratiometric detecting Hg2+, and a low detection limit of 0.059 μM in actual medium. Futher, the probe was suitable for sensing Hg2+ in river water due to its real-time response, high recovery rate, and anti-interference property.
KW - Actual media
KW - Fluorescence resonance energy transfer
KW - Mercury
KW - Ratiometric chemodosimeter
KW - Rhodamine-naphthalimide
UR - http://www.scopus.com/inward/record.url?scp=85017598173&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2017.03.067
DO - 10.1016/j.jlumin.2017.03.067
M3 - 文章
AN - SCOPUS:85017598173
SN - 0022-2313
VL - 188
SP - 135
EP - 140
JO - Journal of Luminescence
JF - Journal of Luminescence
ER -