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A New Highly Selective, Ratiometric and Colorimetric Fluorescence Sensor for Cu2+ with a Remarkable Red Shift in Absorption and Emission Spectra Based on Internal Charge Transfer
被引:260
|作者:
Goswami, Shyamaprosad
[1
]
Sen, Debabrata
[1
]
Das, Nirmal Kumar
[1
]
机构:
[1] Bengal Engn & Sci Univ, Dept Chem, Sibpur 711103, Howrah, India
关键词:
COPPER;
CHEMOSENSOR;
CU(II);
RECEPTOR;
PRION;
FLUOROPHORE;
CHEMISTRY;
DISEASES;
PEPTIDE;
DESIGN;
D O I:
10.1021/ol9029066
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A new 1,8-diaminonaphthalene based ratiometric and highly selective colorimetric "off-on" type of fluorescent probe, receptor 2 has been designed and synthesized that senses only Cu2+ among the other heavy and transition metal ions examined on the basis of Internal charge transfer (ICT). The visual sensitivity of the receptor 2 Is remarkable, showing dual color changes from colorless (receptor) to purple followed by blue and a large red shift in emission upon Cu2+ complexation.
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页码:856 / 859
页数:4
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