科研之友
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摘要
A novel hydroxyethyl piperazine functionalized cyanine derivative was designed and synthesized. It presents selective colorimetric as well as ratiometric absorption responses to trivalent metal cations (Cr3+, Fe3+ and Al3+) over a variety of divalent and monovalent metal cations in 3:7 ethanol-water solution. Detection limits of this method for Cr3+, Fe3+ and Al3+ were 3.99 mu M, 4.30 mu M and 1.85 mu M, respectively. The recognition mechanism was attributed to the protonation of the organic probe, which blocked the photoinduced electron transfer (PET) process. In addition, the sensor was also successfully applied to the determination of Cr3+ in prepared samples.
- 出版日期2015-3
- 单位天津大学
