Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 222, Issue -, Pages 741-746Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.08.125
Keywords
Rhodamine; Tetraphenylethylene; Colorimetric; Fluorescence; Fe3+; Cu2+
Funding
- National Natural Science Foundation of China [21172211]
- Natural Science Foundation of Inner Mongolia Autonomous Region, China [2014BS0205]
- Doctoral Scientific Research Foundation of Inner Mongolia University for the Nationalities [BS311]
- Science Fund of Inner Mongolia University for the Nationalities [NMDGP1403, NMD1311]
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A tetraphenylethylene based chemosensor RbTPE showing an aggregation-induced emission effect was successfully synthesized by condensation of tetraphenylethene-aldehyde and rhodamine B hydrazide. The sensor exhibited colormetric and turn-on fluorescent responses for Fe3+ in neutral EtOH-H2O media. Moreover, it can be used as a naked eye indicator for Cu2+ with an obvious color change from colorless to purple upon the addition of Cu2+. The response mechanism of RbTPE to Cu2+/Fe3+ was based on the spirolactam ring-opening process and formation of a 1:1 metal-ligand complex. In addition, the RbTPE Exhibits 5-f old absorbance enhancement at 556nm and a good linear relationship with the UV irradiation time, which could be used in UV strength measurement. (C) 2015 Elsevier B.V. All rights reserved.
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