Abstract
New rhodamine derivatives bearing binaphthyl group were synthesized as selective fluorescent and colorimetric sensors for Cu2+. Highly selective "off-on" type fluorescent changes were observed upon the addition of Cu2+. Selective fluorescent enhancement of two rhodamine derivatives was attributed to ring opening from the spirolactam (nonfluorescent) to ring-opened amide (fluorescent). A chemo-sensing based on rhodamine derivative was further applied to the microfluidic system.
| Original language | English |
|---|---|
| Pages (from-to) | 597-602 |
| Number of pages | 6 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 137 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2 Apr 2009 |
Bibliographical note
Funding Information:This work was supported by grants from the NRL program (R04-2007-000-2007-0 and R0A-2006-000-10269-0), the SRC program of KOSEF/MOST (R11-2005-008-02003-0) and WCU (R31-2008-000-10010-0) program. M.J.C. also thanks the BK21 program (KRF). Mass spectral data were obtained from the Korea Basic Science Institute (Daegu) on a Jeol JMS 700 high-resolution mass spectrometer.
Keywords
- Binaphthyl group
- Colorimetric sensor
- Copper ion sensor
- Fluorescent sensor
- Microfluidic system
- Rhodamine
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